| two new bislabdane-type diterpenoids and three new diterpenoids from the roots of cunninghamia lanceolata. | two new bislabdane-type diterpenoids lanceolatin (1), lancelatol (2) and three new diterpenoids 15-nor-14-oxo-8(17),12-labdanien-14,18-dionic acid (3), 8(17),12,14-labdantrien-18-oic acid (4) and 8(17),12,14-labdantrien-18-ol (5), together with 7 known diterpenoids were isolated from the roots of cunninghamia lanceolata. their structures were determined by spectroscopic and chemical methods. all of these compounds were isolated from the species for the first time. one of the isolated compounds s ... | 2001 | 11509976 |
| [dynamics of community structure in successional process of needle and broad-leaved mixed forest in heishiding of guangdong]. | this paper dealt with the dynamics of community structure in a ten-year succession of needle and broad-leaved mixed forest in heishiding of guangdong province. the vertical community structure tended to be complex, while the horizontal one increased by a wide range. there was no big change in species composition, but the dominance of conifers pinus massoniana and cunninghamia lanceolata was substituted by the broad-leaved species, such as schima superba, symplocos adenophylla and schefflera octo ... | 2000 | 11766562 |
| [neural network based on modified simplex method and its application in studying forest self-thinning]. | the mechanism of forest self-thinning is generally nonlinear and dynamic, and the artificial neural network has the characteristic of expressing arbitrary nonlinear mapping. in this paper, the feasibility and limitation of artificial neural network used to simulating forest self-thinning was expounded, and the principle and algorithms of the neural network model based on modified simplex method (bp-msm mixed algorithms) for modeling forest self-thinning were described. its applications in self-t ... | 2000 | 11767515 |
| [relationship between plant community succession and fertility variation of mountain yellow soil in east chongqing]. | based on the analyses of soil physical and chemical properties, this paper studied the relationship between plant community succession and fertility variation of mountain yellow soil in east chongqing. the results showed that the values of integrated soil fertility index of pinus massoniana, cunninghamia lanceolata, deciduous oak, camellia sinensis and evergreen broad-leaved forest soils were 0.1256, 0.2085, 0.3514, 0.2479 and 0.9329, respectively, implying that soil development had a close rela ... | 2005 | 15852912 |
| [experience model for self-thinning process of even-aged pure stands]. | based on the famous -3/2 power rule and generalized schumacher growth equation, a mathematical model for the density change of even-aged pure stands with time during self-thinning process was presented, and the genetic algorithms was used to fit this nonlinear model. with the collected data from populus tremula var. davidiana, pinus yunnanensis and cunninghamia lanceolata even-aged pure stands, the new model was verified and compared with other models. the results showed that the new model could ... | 2005 | 15852914 |
| modification of wood with isopropyl glycidyl ether and its effects on decay resistance and light stability. | china fir (cunninghamia lanceolata var. lanceolata) and maple (acer sp.) wood were etherified with isopropyl glycidyl ether and the decay resistance and light stability of the modified wood were assessed. cp/mas (13)c nmr and ft-ir analyses indicated that new ether bonds containing isopropyl groups formed after reacting wood with isopropyl glycidyl ether. modified wood samples were very resistant to decay when exposed to brown-rot fungus laetiporus sulphureus or white-rot fungus lenzites betulin ... | 2006 | 16039118 |
| [biodiversity of main coniferous forests at low elevation of three gorges reservoir area]. | the study showed that at low elevation of three gorges reservoir area, pinus massoniana, cupressus funebris and cunninghamia lanceolata were the main coniferous forests, which were respectively divided into 14, 9 and 5 community types based on field investigation. the whole trend of their species richness index, species diversity index and species evenness index was that shrub layer and herb layer were larger than tree layer. the diversity indices had no obvious trend along the low elevation gra ... | 2005 | 16355803 |
| [chemical components and antimicrobial activity of essential oils in cunninghamia lanceolata heartwood]. | in this study, the essential oils in cunninghamia lanceolata heartwood were water-steam distilled, and their chemical components were analyzed by column chromatography and gc-ms, with their antimicrobial activity tested. the results showed that the essential oils content was 1.794-2.076 (w/w), and 47 peaks were separated. 27 compounds, accounted for 99% of crude essential oils, were identified. the essential oils had an obvious antimicrobial activity against escherichia coli, staphylococcus aure ... | 2005 | 16515195 |
| temporal changes in the inequality of early growth of cunninghamia lanceolata (lamb.) hook.: a novel application of the gini coefficient and lorenz asymmetry. | growth within tree populations varies among individuals due to changes in biotic and abiotic factors. the degree of such variation, defined as growth inequality, serves as a useful indicator of the uniformity of growth within a population in response to the prevalent environmental conditions. by application of the gini coefficient (g), an index for inequality, we characterized the early growth inequality of ninety crosses of chinese fir (cunninghamia lanceolata (lamb.) hook.) and their open-poll ... | 2006 | 16636928 |
| [aboveground biomass of three conifers in qianyanzhou plantation]. | in this paper, the regressive models of the aboveground biomass of pinus elliottii, p. massoniana and cunninghamia lanceolata in qianyanzhou of subtropical china were established, and the regression analysis on the dry weight of leaf biomass and total biomass against branch diameter (d), branch length (l), d3 and d2l was conducted with linear, power and exponent functions. power equation with single parameter (d) was proved to be better than the rests for p. massoniana and c. lanceolata, and lin ... | 2006 | 17066688 |
| [characteristics of soil microbial biomass carbon and nitrogen and their relationships with soil nutrients in cunninghamia lanceolata plantations]. | the study on the soil microbial biomass and nutrient status under native broadleaved forest and cunninghamia lanceolata plantations at the huitong national research station of forest ecosystem showed that after the native broadleaved forest was replaced by mono-cultured c. lanceolata or c. lanceolata was planted continuously, soil microbial biomass and nutrient pool decreased greatly. in 0 - 10 cm soil layer, the concentrations of soil microbial carbon and nitrogen in broadleaved forest were 800 ... | 2006 | 17330467 |
| new lignans from the heartwood of cunninghamia lanceolata. | two new lignans, including the aryltetralin-type lignan, lanceoline (1), and the diaryl butyrolactone-type lignan, 5-methoxytrachelogenin (2), together with 5-methoxywikstromol (3), were isolated from the low-polar layer of a heartwood extract of cunninghamia lanceolata as their acetylated derivatives 1a, 2a and 3a, respectively, and were identified by spectroscopic analyses. the (13)c-nmr data for 3a are reported for the first time in this paper. | 2007 | 17690451 |
| [population structure of endangered monimopetalum chinense and its relationships with environmental factors]. | based on the field investigation data obtained from the typical plots of four community types, i. e. , secondary shrub, phyllostachys edulis forest, cunninghamia lanceolata forest, and pinus massoniana forest, in the zongli village of qimen county in anhui province, this paper studied the mean basal diameter and structure of monimopetalum chinense population, and the effects of environmental factors on the population characteristics. the results showed that the mean basal diameter of m. chinense ... | 2008 | 18533512 |
| [soil microelements under different vegetation restoration patterns in yellow soil slope region of mid-subtropics]. | with the nüerzhai watershed in wuling mountain as a case, this paper studied the contents and availabilities of soil microelements and their relationships with soil organic matter and ph value in yellow soil slope region of mid-subtropics under seven typical vegetation restoration patterns, i. e., pinus massoniana natural forest (i), cunninghamia lanceolata plantation (ii), eucommia ulmoides plantation (iii), vernicia fordii plantation (iv), machilus pingii secondary forest (v), phyllostachys ed ... | 2008 | 18593030 |
| inhibition of the growth of alexandrium tamarense by algicidal substances in chinese fir (cunninghamia lanceolata). | the wood sawdust from chinese fir (cunninghamia lanceolata) exhibited stronger inhibition on the growth of alexandrium tamarense than those from alder (alnus cremastogyne), pine (pinus massoniana), birch (betula alnoides) and sapele (entandrophragma cylindricum). the water extract, acetone-water extract and essential oil from fir sawdust were all shown to inhibit the growth of a. tamarense. the inhibition of fir essential oil was the strongest among all the above wood sources while the half effe ... | 2009 | 19634014 |
| stability of soil organic carbon changes in successive rotations of chinese fir (cunninghamia lanceolata (lamb.) hook) plantations. | the importance of soil organic carbon (soc) under forests in the global carbon cycle depends on the stability of the soil carbon and its availability to soil microbial biomass. we investigated the effects of successive rotations of chinese fir (cunninghamia lanceolata (lamb.) hook) plantations on the stability of soc and its availability to microbes by adopting the two-step hydrolysis with h2so4 and density fractionation. the results showed that successive rotations of chinese fir decreased the ... | 2009 | 19634448 |
| comparisons of carbon storages in cunninghamia lanceolata and michelia macclurei plantations during a 22-year period in southern china. | tree species composition was important for carbon storage within the same climate range. to quantify the dynamics of ecosystem carbon allocation as affected by different tree species, we measured the above- and below-ground biomass accumulation in 22 years, as well as the tissue carbon concentrations of trees in cunninghamia lanceolata plantation and michelia macclurei plantation. results indicated that m. macclurei plantation significantly stored more carbon (174.8 tons/hm2) than c. lanceolata ... | 2009 | 19803086 |
| [effect of biological pretreatment with trametes vesicolor on the enzymatic hydrolysis of softwood and hardwood]. | we evaluated the effect of biological pretreatment with white rot fungus trametes vesicolor on the enzymatic hydrolysis of two wood species, chinese willow (salix babylonica, hardwood) and china-fir (cunninghamia lanceolata, softwood). the result indicated that the pretreated woods showed significant increases in the final conversion ratios of enzymatic hydrolysis (4.78-fold for hardwood and 4.02-fold for softwood). in order to understand the role of biological pretreatment we investigated the e ... | 2009 | 19835139 |
| [soil active organic matter in broadleaved forest and chinese fir plantation in subtropical region of china]. | a comparative study was made on the soil active organic matter in a broadleaved forest and two chinese fir (cunninghamia lanceolata) plantations in subtropical region of china, aimed to understand the effects of forest conversion and continuous plantation on soil organic c and nutrient status. after the conversion from broadleaved forest to chinese fir plantation, the contents of soil total organic c, humus c, humic acid, and fulvic acid decreased by 27.8%-52.1%, 32.2%-52.8%, 36.4%-59.0%, and 29 ... | 2009 | 19899448 |
| variation in vegetation structure and soil properties, and the relation between understory plants and environmental variables under different phyllostachys pubescens forests in southeastern china. | biodiversity maintenance and soil improvement are key sustainable forestry objectives. research on the effects of bamboo forest management on plant diversity and soil properties are therefore necessary in bamboo-growing regions, such as southeastern china's shunchang county, that have not been studied from this perspective. we analyzed the effects of different phyllostachys pubescens proportions in managed forests on vegetation structure and soil properties using pure cunninghamia lanceolata for ... | 2010 | 20135311 |
| overexpression of two cambium-abundant chinese fir (cunninghamia lanceolata) α-expansin genes clexpa1 and clexpa2 affect growth and development in transgenic tobacco and increase the amount of cellulose in stem cell walls. | expansins are unique plant cell wall proteins that possess the ability to induce immediately cell wall extension in vitro and cell expansion in vivo. to investigate the biological functions of expansins that are abundant in wood-forming tissues, we cloned two expansin genes from the differentiating xylem of chinese fir (cunninghamia lanceolata (lamb.) hook). phylogenetic reconstruction indicated that they belong to α-expansin (expa), named clexpa1 and clexpa2. expression pattern analysis demonst ... | 2010 | 20955182 |
| effects of calcium on seed germination, seedling growth and photosynthesis of six forest tree species under simulated acid rain. | we selected six tree species, pinus massoniana lamb., cryptomeria fortunei hooibr. ex otto et dietr., cunninghamia lanceolata (lamb.) hook., liquidambar formosana hance, pinus armandii franch. and castanopsis chinensis hance, which are widely distributed as dominant species in the forest of southern china where acid deposition is becoming more and more serious in recent years. we investigated the effects and potential interactions between simulated acid rain (siar) and three calcium (ca) levels ... | 2011 | 21470980 |
| [forest biomass and its spatial pattern in guizhou province]. | based on the forest inventory data of 5500 sampling plots from 1996 to 2000 in guizhou province and according to the biomass expansion factors (bef) of various forest types, the forest biomass in the province was estimated, with its spatial pattern and its differences between karst and non-karst regions analyzed. in the study period, the total biomass of trees and shrubs on forest and non-forest lands was 3.51 x 10(8) t, 18% and 82% of which came from karst and non-karst regions, respectively. d ... | 2011 | 21608238 |
| [effects of extreme drought on plant species in karst area of guizhou province, southwest china]. | based on the investigation data of damaged vegetations in karst areas of guizhou province during the extreme drought in 2010, an investigation was made on the species composition, floristic composition, life form, leaf characteristics, and environmental conditions of drought-damaged plants at six sampling plots. at these plots, there were 31 plant species drought-damaged, among which, cunninghamia lanceolata, celastrus orbiculatus, rapanea neriifolia, myrsine semiserrata, cyclobalanopsis glauca, ... | 2011 | 21812284 |
| an axenic culture system for fruiting body formation by an edible bolete phylogenetically related to culinary-medicinal penny bun mushroom, boletus edulis bull.:fr. strains from china. | the ability of two freshly isolated boletus stains to fruit under axenic conditions was tested using different solid and liquid nutrient media. one strain (yncx04) produced numerous primordia from which fruiting bodies, 12 mm and 10 mm in length, with grey, convex pilei, and yellow-white, clavate stipes developed between 15 and 30 d after inoculation of fungal mycelium onto a solid medium consisting of mineral salts, thiamine, glucose, potato, an extract of cunninghamia lanceolata root, and agar ... | 2011 | 22164769 |
| [short-term effects of understory vegetation removal on nutrient cycling in litter layer of chinese fir plantation]. | a short-term understory vegetation removal experiment was conducted at three experimental sites of chinese fir (cunninghamia lanceolata) plantation in huitong of hunan province, south-central china to examine the short-term effects of the absence of understory vegetation on litter decomposition. in the plantation, the standing stock of the litter in l layer (un-decomposed litter), f layer (semi-decomposed litter), and h layer (decomposed litter) under understory intact condition was (123.7 +/- 4 ... | 2011 | 22263458 |
| [phosphorus characteristics in rhizosphere soil of cunninghamia lanceolata, pinus massoniana and their mixed plantations]. | in 2007-2010, a comparative study was conducted on the phosphorus characteristics in the rhizosphere soil of cunninghamia lanceolata, pinus massoniana and c. lanceolata-p. massoniana mixed plantations in a forest farm in nanping city of fujian province, east china. in the rhizosphere soil of pure c. lanceolata and p. massoniana plantations, the content of available p was higher than that in non-rhizosphere soil. as compared with non-rhizosphere soil, the rhizophere soil in the three plantations ... | 2011 | 22303655 |
| composition, anticancer, and antimicrobial activities in vitro of the heartwood essential oil of cunninghamia lanceolata var. konishii from taiwan. | this study investigated the chemical composition, anticancer, and antimicrobial activities in vitro of the essential oil isolated from the heartwood of cunninghamia lanceolata var. konishii from taiwan. the essential oil was isolated using hydrodistillation in a clevenger-type apparatus, and characterized by gc-fid and gc-ms. thirty-seven compounds were identified, representing 100% of the oil. the main components identified were cedrol (58.3%), alpha-cedrene (11.8%), alpha-terpineol (4.2%) and ... | 2012 | 23074921 |
| variation of the linkage of root function with root branch order. | mounting evidence has shown strong linkage of root function with root branch order. however, it is not known whether this linkage is consistent in different species. here, root anatomic traits of the first five branch order were examined in five species differing in plant phylogeny and growth form in tropical and subtropical forests of south china. in paramichelia baillonii, one tree species in magnoliaceae, the intact cortex as well as mycorrhizal colonization existed even in the fifth-order ro ... | 2013 | 23451168 |
| properties of resorcinol-tannin-formaldehyde copolymer resins prepared from the bark extracts of taiwan acacia and china fir. | resorcinol-tannin-formaldehyde copolymer resins (rtf) were prepared by using the bark extracts of taiwan acacia (acacia confusa) and china fir (cunninghamia lanceolata) to substitute part of the resorcinol. from the results, the content of reactive phenolic materials in taiwan acacia and china fir bark extracts were 51.6% and 46.5%, respectively. aromatic compounds were the main components in the bark extracts showed by ft-ir analysis. the conventional synthesis condition used for rf resin was c ... | 2006 | 16171683 |
| [winter feeding sites selection of white-browed hill partridge]. | the winter feeding sites of white-browed hill partridge (arborophila gingica) was investigated in jiuwanshan national nature reserve in guangxi from november to december 2010. with the 34 found feeding sites, the used sites (n=25) were compared with the control sites (n=25), and 19 parameters were measured at each site. the results showed that white-browed hill partridge randomly use broadleaved forest, mixed coniferous-broadleaved forest, mixed broadleaved-bai bamboo (indosasa shibataeoides) fo ... | 2011 | 22006810 |
| [seasonal release characteristics of ca, mg and mn of foliar litter of six tree species in subtropical evergreen broadleaved forest]. | seasonal release dynamics of ca, mg and mn during decomposition of foliar litter of pinus massoniana, cryptomeria fortunei, cunninghamia lanceolata, cinnamomum camphora, toona ciliate, and quercus acutissima were investigated in subtropical evergreen broad-leaved forest employing the method of litterbag. after one-year decomposition, the release rates of ca, mg and mn in foliar litter of the studied tree species ranged from -13.8% to 92.3%, from 4.0% to 64.8%, and from 41.6% to 81.1%, respective ... | 2015 | 26995897 |
| [effects of temperature on ch4 emission from subtropical common tree species leaves]. | laboratory incubation test was conducted to study the effects of temperature on the ch4 emission from the leaves of subtropical common tree species castanopsis carlesii, schima superb, cinnamomum chekiangense, castsanopsis fabri, cunninghamia lanceolata, and citrus reticulata. among the six tree species, only s. superb, c. reticulate, and c. fabri emitted ch4 at 10 degrees c. at above 20 degrees c, all the six species emitted ch4, and the average ch4 emission rate at above 30 degrees c (1.010 ng ... | 2013 | 24066538 |
| comparative analysis of the chloroplast genomic information of cunninghamia lanceolata (lamb.) hook with sibling species from the genera cryptomeria d. don, taiwania hayata, and calocedrus kurz. | chinese fir (cunninghamia lanceolata (lamb.) hook) is an important coniferous tree species for timber production, which accounts for ~40% of log supply from plantations in southern china. chloroplast genetic engineering is an exciting field to engineer several valuable tree traits. in this study, we revisited the published complete chinese fir (nc_021437) and four other coniferous species chloroplast genome sequence in taxodiaceae. comparison of their chloroplast genomes revealed three unique in ... | 2016 | 27399686 |
| temporal variability of ammonia emission potentials for six plant species in an evergreen subtropical forest in southwest china. | the temporal variability of leaf ammonia (nh3) emission potentials (the ratio of leaf tissue ammonium to proton concentration) and nitrogen (n) pools of six dominant plant species were investigated at the tieshanping (tsp) forested catchment, southwest china. the results showed that the nh3 emission potentials and n pools presented small variations among seasons, which were mainly controlled by plant species and the leaf age. also, high emission potential in one species did not correspond to hig ... | 2017 | 28290087 |
| recovery time of soil carbon pools of conversional chinese fir plantations from broadleaved forests in subtropical regions, china. | the conversion from natural forest to plantation has been widely applied, with consequences on ecosystem carbon pool. the experimental results of changes of soil carbon stocks after forest conversion are often contradictory. moreover, the recovery time of soil carbon stocks after forest conversion varies among different sites. to examine the changes of soil carbon stocks following the forest conversions in the long-term and to estimate the recovery time, we selected 116 subtropical forests, incl ... | 2017 | 28249750 |
| somatic embryogenesis of immature cunninghamia lanceolata (lamb.) hook zygotic embryos. | two efficient somatic embryogenesis systems were developed in chinese fir, the most important conifer for industrial wood production in china. three development stages (cleavage polyembryony, dominant embryo, and precotyledon) of immature embryos derived from 25 genotypes of open-pollinated mother trees were used as initial explants. cleavage polyembryony-stage embryos with a 12.44% induction rate was the most embryogenic response stage. the highest frequency of embryogenic callus (13.86%) induc ... | 2017 | 28246394 |
| models for predicting the biomass of cunninghamialanceolata trees and stands in southeastern china. | using existing equations to estimate the biomass of a single tree or a forest stand still involves large uncertainties. in this study, we developed individual-tree biomass models for chinese fir (cunninghamia lanceolata.) stands in fujian province, southeast china, by using 74 previously established models that have been most commonly used to estimate tree biomass. we selected the best fit models and modified them. the results showed that the published model ln(b(biomass)) = a + b * ln(d) + c * ... | 2017 | 28095512 |
| effects of elevated mean and extremely high temperatures on the physio-ecological characteristics of geographically distinctive populations of cunninghamia lanceolata. | conventional models for predicting species distribution under global warming scenarios often treat one species as a homogeneous whole. in the present study, we selected cunninghamia lanceolata (c. lanceolata), a widely distributed species in china, to investigate the physio-ecological responses of five populations under different temperature regimes. the results demonstrate that increased mean temperatures induce increased growth performance among northern populations, which exhibited the greate ... | 2016 | 28004775 |
| thinning effect on photosynthesis depends on needle ages in a chinese fir (cunninghamia lanceolata) plantation. | canopies in evergreen coniferous plantations often consist of various-aged needles. however, the effect of needle age on the photosynthetic responses to thinning remains ambiguous. photosynthetic responses of different-aged needles to thinning were investigated in a chinese fir (cunninghamia lanceolata) plantation. a dual isotope approach [simultaneous measurements of stable carbon (δ(13)c) and oxygen (δ(18)o) isotopes] was employed to distinguish between biochemical and stomatal limitations to ... | 2017 | 27986315 |
| effect of forestry-waste biochars on adsorption of pb(ii) and antibiotic florfenicol in red soil. | biochars derived from pinus massoniana and cunninghamia lanceolata trunks (abbreviated as pb and cb, respectively) were used to investigate their potential capabilities to improve lead (pb(ii)) and antibiotic florfenicol (flo) immobilization in soil. results shows that, after incubation for 60 days, the maximum adsorption capacities (q m ) of biochar-treated soils (soil-pb and soil-cb) for pb(ii) was increased by 27 and 14 %, respectively, compared with pristine soil sample. in the case of flo, ... | 2017 | 27900720 |
| a broadleaf species enhances an autotoxic conifers growth through belowground chemical interactions. | plants may affect the performance of neighboring plants either positively or negatively through interspecific and intraspecific interactions. productivity of mixed-species systems is ultimately the net result of positive and negative interactions among the component species. despite increasing knowledge of positive interactions occurring in mixed-species tree systems, relatively little is known about the mechanisms underlying such interactions. based on data from 25-year-old experimental stands ... | 2016 | 27859072 |
| transcriptome and degradome sequencing reveals dormancy mechanisms of cunninghamia lanceolata seeds. | seeds with physiological dormancy usually experience primary and secondary dormancy in the nature; however, little is known about the differential regulation of primary and secondary dormancy. we combined multiple approaches to investigate cytological changes, hormonal levels, and gene expression dynamics in cunninghamia lanceolata seeds during primary dormancy release and secondary dormancy induction. light microscopy and transmission electron microscopy revealed that protein bodies in the embr ... | 2016 | 27760880 |
| thinning increases understory diversity and biomass, and improves soil properties without decreasing growth of chinese fir in southern china. | sustainable forestry requires adopting more ecosystem-informed perspectives. tree thinning improves forest productivity by encouraging the development of the understory, which in turn improves species diversity and nutrient cycling, thereby altering the ecophysiological environment of the stand. this study aimed to quantify tree growth, understory vegetation, and soil quality of 9- and 16-year-old chinese fir (cunninghamia lanceolata (lamb.) hook.) plantations in south china, 1-7 years after pre ... | 2016 | 27640061 |
| a predictive nondestructive model for the covariation of tree height, diameter, and stem volume scaling relationships. | metabolic scaling theory (mst) posits that the scaling exponents among plant height h, diameter d, and biomass m will covary across phyletically diverse species. however, the relationships between scaling exponents and normalization constants remain unclear. therefore, we developed a predictive model for the covariation of h, d, and stem volume v scaling relationships and used data from chinese fir (cunninghamia lanceolata) in jiangxi province, china to test it. as predicted by the model and sup ... | 2016 | 27553773 |
| screening and validation of housekeeping genes of the root and cotyledon of cunninghamia lanceolata under abiotic stresses by using quantitative real-time pcr. | cunninghamia lanceolata (chinese fir) is a fast-growing and commercially important conifer of the cupressaceae family. due to the unavailability of complete genome sequences and relatively poor genetic background information of the chinese fir, it is necessary to identify and analyze the expression levels of suitable housekeeping genes (hkgs) as internal reference for precise analysis. based on the results of database analysis and transcriptome sequencing, we have chosen five candidate hkgs (act ... | 2016 | 27483238 |
| development of the photosynthetic apparatus of cunninghamia lanceolata in light and darkness. | here, we compared the development of dark- and light-grown chinese fir (cunninghamia lanceolata) cotyledons, which synthesize chlorophyll in the dark, representing a different phenomenon from angiosperm model plants. we determined that the grana lamellar membranes were well developed in both chloroplasts and etiochloroplasts. the accumulation of thylakoid membrane protein complexes was similar between chloroplasts and etiochloroplasts. measurement of chlorophyll fluorescence parameters indicated ... | 2017 | 27401059 |
| physiological and proteomic analysis reveals the different responses of cunninghamia lanceolata seedlings to nitrogen and phosphorus additions. | both nitrogen (n) and phosphorus (p) additions in soils can increase tree photosynthetic rate (pn), biomass accumulation and further increase primary production of plantation. however, the improved photosynthetic ability is varied from the added nutrient types and the mechanisms are sophisticated. in this study, an itraq-based quantitative proteome combined with physiological analysis of chinese fir (cunninghamia lanceolata) leaves was performed to determine the common and different responses on ... | 2016 | 27389851 |
| transcriptome analysis of immature xylem in the chinese fir at different developmental phases. | background.chinese fir [cunninghamia lanceolata (lamb.) hook.] is one of the most important native tree species for timber production in southern china. an understanding of overall fast growing stage, stem growth stage and senescence stage cambium transcriptome variation is lacking. we used transcriptome sequencing to identify the repertoire of genes expressed during development of xylem tissue in chinese fir, aiming to delineate the molecular mechanisms of wood formation. results. we carried ou ... | 2016 | 27330860 |
| transcriptional regulation of vascular cambium activity during the transition from juvenile to mature stages in cunninghamia lanceolata. | cunninghamia lanceolata (lamb.) hook., an evergreen conifer distributed in southern china, has been recognized as the most commercially important timber species due to its rapid growth. however, the molecular mechanisms underlying growth alternation due to vascular cambium activity are poorly understood. here, we used cryosectioning to isolate the vascular cambium tissue of c. lanceolata at three stages, namely, juvenile, transition and mature (3-, 13-, and 35-year-old trees respectively) for tr ... | 2016 | 27317969 |
| ion flux in roots of chinese fir (cunninghamia lanceolata (lamb.) hook) under aluminum stress. | chinese fir is a tall, fast-growing species that is unique to southern china. in chinese fir plantations, successive plantings have led to a decline in soil fertility, and aluminum toxicity is thought to be one of the main reasons for this decline. in this study, non-invasive micro-test technology was used to study the effect of aluminum stress on the absorption of 4 different ions in the roots of the chinese fir clone fs01. the results are as follows: with increased aluminum concentration and l ... | 2016 | 27270726 |
| development of a stem taper equation and modelling the effect of stand density on taper for chinese fir plantations in southern china. | chinese fir (cunninghamia lanceolata) is the most important commercial tree species in southern china. the objective of this study was to develop a variable taper equation for chinese fir, and to quantify the effects of stand planting density on stem taper in chinese fir. five equations were fitted or evaluated using the diameter-height data from 293 chinese fir trees sampled from stands with four different densities in fenyi county, jiangxi province, in southern china. a total of 183 trees were ... | 2016 | 27168964 |
| growth, biomass allocation and photosynthetic responses are related to intensity of root severance and soil moisture conditions in the plantation tree cunninghamia lanceolata. | we employed the warm temperate conifer cunninghamia lanceolata (lamb.) hook. as a model of plantation forest species to investigate ecophysiological responses to root treatments (control (0%), and ∼25, 50 or 75% of the initial root mass) under well-watered and water-limited conditions. our results indicated that total root dry mass accumulation was negatively associated with the severity of root pruning, but there was evidence of multiple compensatory responses. the plants exhibited higher insta ... | 2016 | 27122365 |
| evaluating management tradeoffs between economic fiber production and other ecosystem services in a chinese-fir dominated forest plantation in fujian province. | chinese fir (cunninghamia lanceolata) is not only a valuable timber species, but also plays an important role in the provision of ecosystem services. forest management decisions to increase the production of fiber for economic gain may have negative impacts on the long-term flow of ecosystem services from forest resources. such tradeoffs should be taken into account to fulfill the requirements of sustainable forest management. here we employed an established, ecosystem-based, stand-level model ( ... | 2016 | 26994796 |
| seasonal development of cambial activity in relation to xylem formation in chinese fir. | the vascular cambium is a lateral meristem which can differentiate into secondary phloem and xylem. the secondary growth of woody plants resulting from vascular cambium activity has been a focus of considerable attention, but the quantitative relationships between cambial activity and secondary xylem formation have been little studied. our analysis of cytological changes in the cambium of chinese fir (cunninghamia lanceolata), revealed a significant positive correlation between vascular cambium ... | 2016 | 26986869 |
| compatible models of carbon content of individual trees on a cunninghamia lanceolata plantation in fujian province, china. | we tried to establish compatible carbon content models of individual trees for a chinese fir (cunninghamia lanceolata (lamb.) hook.) plantation from fujian province in southeast china. in general, compatibility requires that the sum of components equal the whole tree, meaning that the sum of percentages calculated from component equations should equal 100%. thus, we used multiple approaches to simulate carbon content in boles, branches, foliage leaves, roots and the whole individual trees. the a ... | 2016 | 26982054 |
| carbon sequestration potential in stands under the grain for green program in southwest china. | the grain for green program (ggp) is the largest afforestation and reforestation project in china in the early part of this century. to assess carbon sequestration in stands under the ggp in southwest china, the carbon stocks and their annual changes in the ggp stands in the region were estimated based on the following information: (1) collected data on the annually planted area of each tree species under the ggp in southwest china from 1999 to 2010; (2) development of empirical growth curves an ... | 2016 | 26959645 |
| root-associated fungi of vaccinium carlesii in subtropical forests of china: intra- and inter-annual variability and impacts of human disturbances. | ericoid mycorrhiza (erm) are expected to facilitate establishment of ericaceous plants in harsh habitats. however, diversity and driving factors of the root-associated fungi of ericaceous plants are poorly understood. in this study, hair-root samples of vaccinium carlesii were taken from four forest types: old growth forests (ogf), secondary forests with once or twice cutting (sec i and sec ii), and cunninghamia lanceolata plantation (plf). fungal communities were determined using high-throughpu ... | 2016 | 26928608 |
| [fine root production in initial stage of castanopsis carlesii under different regeneration modes in sanming, fujian province, china]. | fine root biomass and production in initial stage of three different regeneration approaches, i.e., natural regeneration with anthropogenic promotion (ar) , the castanopsis carlesii plantation ( cc) and the cunninghamia lanceolata plantation ( cl) on the clear-cutting sites of the secondary forest of c. carlesii (ck), in sanming, fujian province, were investigated by using both minrhizotrons and the soil coring methods. the results of a year observation showed that the average fine root biomass ... | 2015 | 26915178 |
| gene expression and proteomic analysis of shoot apical meristem transition from dormancy to activation in cunninghamia lanceolata (lamb.) hook. | in contrast to annual plants, in perennial plants, the shoot apical meristem (sam) can undergo seasonal transitions between dormancy and activity; understanding this transition is crucial for understanding growth in perennial plants. however, little is known about the molecular mechanisms of sam development in trees. here, light and transmission electron microscopy revealed that evident changes in starch granules, lipid bodies, and cell walls thickness of the sam in c. lanceolata during the tran ... | 2016 | 26832850 |
| development of a compatible taper function and stand-level merchantable volume model for chinese fir plantations. | chinese fir (cunninghamia lanceolata [lamb.] hook) is one of the most important plantation tree species in china with good timber quality and fast growth. it covers an area of 8.54 million hectare, which corresponds to 21% of the total plantation area and 32% of total plantation volume in china. with the increasing market demand, an accurate estimation and prediction of merchantable volume at tree- and stand-level is becoming important for plantation owners. although there are many studies on th ... | 2016 | 26799399 |
| genetic characterization of red-colored heartwood genotypes of chinese fir using simple sequence repeat (ssr) markers. | the present study investigated the genetic characterization of red-colored heartwood chinese fir [cunninghamia lanceolata (lamb.) hook.] in guangxi using 21 simple sequence repeat (ssr) markers and analyzes of the genetic variation (n = 149) in samples obtained from five sites in guangxi province, china. the number of different alleles and the shannon's information index per locus ranged from 3 to 12 and from 0.398 to 2.258 with average values of 6 and 1.211, respectively, indicating moderate le ... | 2015 | 26782503 |
| the complete chloroplast genome sequence of cunninghamia lanceolata. | we determined the complete chloroplast genome sequence of cunninghamia lanceolata (genbank accession: nc_021437.1) in this study. the total length of the chloroplast genome is 135 334 bp. the gc content is 35%. a total of 119 genes are successfully annotated, including 35 trna (20 trna species), 3 rrna (3 rrna species) and 81 protein-coding genes (81 pcg species). twelve protein-coding genes (rps16, ycf3, rpoc1, atpf, rps12, ndhb, rpl2, rpl16, petd, petb, ndha, rps15) contain one or two introns. ... | 2017 | 26730645 |
| [soil microbial community structure of two types of forests in the mid-subtropics of china]. | soil microbial community structures were analyzed by biomarker method of phospholipid fatty acid (plfa) for a natural forest dominated by castanopsis fabri (cf) and an adjacent plantation of cunninghamia lanceolata (cl) in the mid-subtropics of china. the results showed that the amounts of total plfas, bacterial plfas, fungal plfas, gram-positive bacterial plfas and gramnegative bacterial plfas in the 0-10 cm soil layer were higher than in the 10-20 cm soil layer, and each type of plfas in cf we ... | 2015 | 26710645 |
| [an object-based information extraction technology for dominant tree species group types]. | information extraction for dominant tree group types is difficult in remote sensing image classification, howevers, the object-oriented classification method using high spatial resolution remote sensing data is a new method to realize the accurate type information extraction. in this paper, taking the jiangle forest farm in fujian province as the research area, based on the quickbird image data in 2013, the object-oriented method was adopted to identify the farmland, shrub-herbaceous plant, youn ... | 2015 | 26572017 |
| clrtl1 encodes a chinese fir rnase iii-like protein involved in regulating shoot branching. | identification of genes controlling shoot branching is crucial for improving plant architecture and increasing crop yield or biomass. a branching mutant of chinese fir named "dugansha" (cunninghamia lanceolata var. dugan.) has been isolated in our laboratory. we chose the cdna-aflp technique and an effective strategy to screen genes that potentially regulate shoot branching in chinese fir using this mutant. an rnase iii-like1 cdna fragment named clrtl1 was identified as a potential positive regu ... | 2015 | 26516842 |
| a mixed-effects model with different strategies for modeling volume in cunninghamia lanceolata plantations. | a systematic evaluation of nonlinear mixed-effect taper models for volume prediction was performed. of 21 taper equations with fewer than 5 parameters each, the best 4-parameter fixed-effect model according to fitting statistics was then modified by comparing its values for the parameters total height (h), diameter at breast height (dbh), and aboveground height (h) to modeling data. seven alternative prediction strategies were compared using the best new equation in the absence of calibration da ... | 2015 | 26445505 |
| a hierarchical bayesian model to predict self-thinning line for chinese fir in southern china. | self-thinning is a dynamic equilibrium between forest growth and mortality at full site occupancy. parameters of the self-thinning lines are often confounded by differences across various stand and site conditions. for overcoming the problem of hierarchical and repeated measures, we used hierarchical bayesian method to estimate the self-thinning line. the results showed that the self-thinning line for chinese fir (cunninghamia lanceolata (lamb.)hook.) plantations was not sensitive to the initial ... | 2015 | 26440942 |
| nitrogen and phosphorus additions alter nutrient dynamics but not resorption efficiencies of chinese fir leaves and twigs differing in age. | it is unclear how or even if phosphorus (p) input alters the influence of nitrogen (n) deposition in a forest. in theory, nutrients in leaves and twigs differing in age may show different responses to elevated nutrient input. to test this possibility, we selected chinese fir (cunninghamia lanceolata) for a series of n and p addition experiments using treatments of +n1 - p (50 kg n ha(-1) year(-1)), +n2 - p (100 kg n ha(-1) year(-1)), -n + p (50 kg p ha(-1) year(-1)), +n1 + p, +n2 + p and -n - p ... | 2015 | 26358049 |
| global reprogramming of transcription in chinese fir (cunninghamia lanceolata) during progressive drought stress and after rewatering. | chinese fir (cunninghamia lanceolata), an evergreen conifer, is the most commonly grown afforestation species in southeast china due to its rapid growth and good wood qualities. to gain a better understanding of the drought-signalling pathway and the molecular metabolic reactions involved in the drought response, we performed a genome-wide transcription analysis using rna sequence data. in this study, chinese fir plantlets were subjected to progressively prolonged drought stress, up to 15 d, fol ... | 2015 | 26154763 |
| [effects of crop tree release on stand growth and stand structure of cunninghamia lanceolata plantation]. | crop trees were selected in a 26-year-old even-aged cunninghamia lanceolata plantation in lin' an, and compared in plots that were released and unreleased to examine growth and structure responses for 3 years after thinning. crop tree release significantly increased the mean increments of diameter and volume of individual tree by 1.30 and 1.25 times relative to trees in control stands, respectively. the increments of diameter and volume of crop trees were significantly higher than those of gener ... | 2015 | 26094445 |
| isolation of high-quality total rna from chinese fir (cunninghamia lanceolata (lamb.) hook). | rna isolation with rna in a high quantity is a basic analytical method in plant genetics, molecular biology and related physiological investigations. to understand the genetic and molecular biology of chinese fir, sufficient high-quality total rna must be obtained for cdna library construction and other downstream molecular applications. however, extracting rna from chinese fir is difficult and often requires the modification of existing protocols. chinese fir tissues containing large amounts of ... | 2015 | 26083257 |
| partial shading of lateral branches affects growth, and foliage nitrogen- and water-use efficiencies in the conifer cunninghamia lanceolata growing in a warm monsoon climate. | the degree to which branches are autonomous in their acclimation responses to alteration in light environment is still poorly understood. we investigated the effects of shading of the sapling crown of cunninghamia lanceolata (lamb.) hook on the whole-tree and mid-crown branch growth and current-year foliage structure and physiology. four treatments providing 0, 50, 75 and 90% shading compared with full daylight (denoted as treatment(0), treatment(50%), treatment(75%) and treatment(90%), and shad ... | 2015 | 26032625 |
| relationship between modelling accuracy and inflection point attributes of several equations while modelling stand diameter distributions. | in this study, seven popular equations, including 3-parameter weibull, 2-parameter weibull, gompertz, logistic, mitscherlich, korf and r distribution, were used to model stand diameter distributions for exploring the relationship between the equations' inflection point attributes and model accuracy. a database comprised of 146 diameter frequency distributions of chinese fir (cunninghamia lanceolata (lamb.) hook.) plantations was used to demonstrate model fitting and comparison. results showed th ... | 2015 | 26016995 |
| linear mixed-effects models to describe individual tree crown width for china-fir in fujian province, southeast china. | a multiple linear model was developed for individual tree crown width of cunninghamia lanceolata (lamb.) hook in fujian province, southeast china. data were obtained from 55 sample plots of pure china-fir plantation stands. an ordinary linear least squares (ols) regression was used to establish the crown width model. to adjust for correlations between observations from the same sample plots, we developed one level linear mixed-effects (lme) models based on the multiple linear model, which take i ... | 2015 | 25876178 |
| new ceratocystis species from eucalyptus and cunninghamia in south china. | during routine surveys for possible fungal pathogens in the rapidly expanding plantations of eucalyptus and cunninghamia lanceolata in china, numerous isolates of unknown species in the genus ceratocystis (microascales) were obtained from tree wounds. in this study we identified the ceratocystis isolates from eucalyptus and cunninghamia in the guangdong, guangxi, fujian and hainan provinces of south china based on morphology and through comparisons of dna sequence data for the its, partial β-tub ... | 2015 | 25840908 |
| biomedical molecular of woody extractives of cunninghamia lanceolata biomass. | extractives, important compounds from wood, provide abundant resources for woody medicine. in this study, the three extractives from cunninghamia lanceolata wood were removed by method of three-stage extraction with alcohol, petroleum ether, and alcohol/petroleum ether and their chemical components were analyzed by gas chromatography-mass spectrometry (gc-ms). thirteen chemical components were discovered in the first-stage extractives, including: 4-((1e)-3-hydroxy-1-propenyl)-2-methoxyphenol (36 ... | 2015 | 25796151 |
| genome-wide analysis reveals dynamic changes in expression of micrornas during vascular cambium development in chinese fir, cunninghamia lanceolata. | micrornas (mirnas) are small noncoding regulatory rnas that play key roles in the process of plant development. to date, extensive studies of mirnas have been performed in a few model plants, but few efforts have focused on small rnas (srnas) in conifers because of the lack of reference sequences for their enormous genomes. in this study, solexa sequencing of three srna libraries obtained from dormant, reactivating, and active vascular cambium in chinese fir (cunninghamia lanceolata) using tangen ... | 2015 | 25795740 |
| nine new diterpenes from the leaves of plantation-grown cunninghamia lanceolata. | nine new diterpenes named lanceolatanol hydroperoxide (1), epilanceolatanol hydroperoxide (2), lanceolatanoic acid hydroperoxide (3), epilanceolatanoic acid hydroperoxide (4), lanceolatanol (5), lanceolatanoic acid (6), 11-acetoxylanceolatanoic acid (7), 11-acetoxylanceolatanoic acid methyl ester (8) and epoxyhinokiol (13) were characterized from the leaves of plantation-grown cunninghamia lanceolata along with twelve known compounds. the compounds were evaluated for their growth inhibitory acti ... | 2015 | 25736997 |
| isolation and characterization of microsatellite loci for cunninghamia lanceolata (lamb.) hook. | as a result of human activities, wild populations of cunninghamia lanceolata (cupressaceae) have sharply declined in recent years. the development and implementation of a valid conservation strategy require a clear understanding of the genetic makeup of this species. eleven polymorphic microsatellite loci were isolated and characterized from samples of 52 individuals from the provenance test plantation in fenyi, jiangxi province, china. among the loci, 10 were polymorphic and 1-34 (average 18.18 ... | 2015 | 25729978 |
| isometric scaling of above- and below-ground biomass at the individual and community levels in the understorey of a sub-tropical forest. | empirical studies and allometric partitioning (ap) theory indicate that plant above-ground biomass (ma) scales, on average, one-to-one (isometrically) with below-ground biomass (mr) at the level of individual trees and at the level of entire forest communities. however, the ability of the ap theory to predict the biomass allocation patterns of understorey plants has not been established because most previous empirical tests have focused on canopy tree species or very large shrubs. | 2015 | 25564468 |
| [comparison on concentrations and quality of dissolved organic matter in throughfall and stemflow in a secondary forest of castanopsis carlesii and cunninghamia lanceolata plantation]. | in this paper, monthly variation of dissolved organic matter (dom) concentrations as well as humification and aromaticity indices in throughfall and stemflow from secondary broadleaved castanopsis carlesii (bf) forest and cunninghamia lanceolata plantation (cp) were measured. the doc concentrations in throughfall were significantly higher with greater variation in bf than in cp. the concentrations of doc in throughfall were averagely 7.2 and 3.2 times of those in rainfall in bf and cp forests, r ... | 2014 | 25509068 |
| [long-term effects of thinning on carbon storage in cunninghamia lanceolata plantations]. | the stand environment and tree growth could be changed as well as carbon storage be affected by thinning. thus it is important to conduct the research on changes of carbon stock in plantations after thinning for assessing the dynamics of forest ecosystem carbon pool. the carbon storage and its distribution of various components in 22-year-old cunninghamia lanceolata plantations were studied with control and different treatments such as moderate and heavy thinning. moderate (thinning intensity wa ... | 2014 | 25345037 |
| [soil microfauna diversity among cunninghamia lanceolata plantations based on pyrosequencing]. | in order to study the function of soil microfauna and its responses to environmental changes, we used metagenome analyses of the 18s rdna gene region to identify differences in microfauna diversity and community structure among fifteen soil samples belonging to five different cunninghamia lanceolate plantations. the plantations were located in youxian county, hunan province in central china. the trees in these plantations were of different ages (3, 13, and 26 years) and belonged to different eco ... | 2014 | 25223021 |
| nonlinear mixed-effects (nlme) diameter growth models for individual china-fir (cunninghamia lanceolata) trees in southeast china. | an individual-tree diameter growth model was developed for cunninghamia lanceolata in fujian province, southeast china. data were obtained from 72 plantation-grown china-fir trees in 24 single-species plots. ordinary non-linear least squares regression was used to choose the best base model from among 5 theoretical growth equations; selection criteria were the smallest absolute mean residual and root mean square error and the largest adjusted coefficient of determination. to account for autocorr ... | 2014 | 25084538 |
| [effects of tree species transfer on soil dissolved organic matter pools in a reforested chinese fir (cunninghamia lanceolata) woodland]. | based on the comparison between reforested 19-year-old mytilaria laosensis and cunninghamia lanceolata plantations on cut-over land of c. lanceolata, effects of tree species transfer on soil dissolved organic matter were investigated. cold water, hot water and 2 mol x l(-1) kcl solution were used to extract soil dissolved organic carbon (doc) and dissolved organic nitrogen (don) from 0-5, 5-10 and 10-20 cm soil layers. in m. laosensis plantaion, the concentrations of soil doc extracted by cold w ... | 2014 | 24765836 |
| significant increase in ecosystem c can be achieved with sustainable forest management in subtropical plantation forests. | subtropical planted forests are rapidly expanding. they are traditionally managed for intensive, short-term goals that often lead to long-term yield decline and reduced carbon sequestration capacity. here we show how it is possible to increase and sustain carbon stored in subtropical forest plantations if management is switched towards more sustainable forestry. we first conducted a literature review to explore possible management factors that contribute to the potentials in ecosystem c in tropi ... | 2014 | 24586964 |
| [effects of land use change on soil labile organic carbon in central jiangxi of china]. | selecting the 15-year abandoned land (al) and three forest lands [phyllostachys edulis plantation (pe), schima superba secondary forest (ss), and cunninghamia lanceolata plantation (cl)] in anfu county of jiangxi province as test objects, this paper studied the effects of land use change on the soil organic carbon (soc) pool and soil labile organic carbon (sloc) contents. the soil organic carbon (soc), microbial biomass carbon (mbc), hot- water extractable carbon (hwc), and readily oxidizable ca ... | 2013 | 24483085 |
| [aboveground biomass of natural castanopsis carlesii-schima superba community in xiaokeng of nanling mountains, south china]. | by the method of clear cutting, a measurement was made on the aboveground biomass (agb) of 24-year old natural castanopsis carlesii-schima superba community in an 800 m2 plot in xiaokeng of nanling mountains, south china. the distribution patterns of the total agb in different forest layers, tree species, and tree layer organs were investigated, and the agb regression models were constructed. the results showed that when constructing the agb regression models, more than 12 samples would be feasi ... | 2013 | 24417094 |
| tree biomass estimation of chinese fir (cunninghamia lanceolata) based on bayesian method. | chinese fir (cunninghamia lanceolata (lamb.) hook.) is the most important conifer species for timber production with huge distribution area in southern china. accurate estimation of biomass is required for accounting and monitoring chinese forest carbon stocking. in the study, allometric equation w = a(d2h)b was used to analyze tree biomass of chinese fir. the common methods for estimating allometric model have taken the classical approach based on the frequency interpretation of probability. ho ... | 2013 | 24278198 |
| [effects of thinning on fine-root morphology, biomass and n concentration of different branch orders of chinese fir]. | taking a 25-year old chinese fir (cunninghamia lanceolata) plantation as the object, this paper studied the effects of thinning on the biomass, morphological traits, and nitrogen concentration of the first five orders roots. with the increase of root order (from the first to the fifth order), there was a significant increase in the fine-root biomass, diameter, and tissue density, and a significantly decrease in the specific root length (srl), root length density (rld), and root number (rn). thin ... | 2013 | 24066530 |
| transcriptome characteristics and six alternative expressed genes positively correlated with the phase transition of annual cambial activities in chinese fir (cunninghamia lanceolata (lamb.) hook). | the molecular mechanisms that govern cambial activity in angiosperms are well established, but little is known about these molecular mechanisms in gymnosperms. chinese fir (cunninghamia lanceolata (lamb.) hook), a diploid (2n = 2x = 22) gymnosperm, is one of the most important industrial and commercial timber species in china. here, we performed transcriptome sequencing to identify the repertoire of genes expressed in cambium tissue of chinese fir. | 2013 | 23951189 |
| the potential effects of climate change on the distribution and productivity of cunninghamia lanceolata in china. | climate changes may have immediate implications for forest productivity and may produce dramatic shifts in tree species distributions in the future. quantifying these implications is significant for both scientists and managers. cunninghamia lanceolata is an important coniferous timber species due to its fast growth and wide distribution in china. this paper proposes a methodology aiming at enhancing the distribution and productivity of c. lanceolata against a background of climate change. first ... | 2014 | 23925864 |
| expression of a conifer cobra-like gene clcobl1 from chinese fir (cunninghamia lanceolata) alters the leaf architecture in tobacco. | the cell wall plays crucial roles in establishing the morphology of the plant cell, defence response to biotic and abiotic stresses, and mechanical properties of organs. the cobra gene encodes a putative glycosylphosphatidylinositol (gpi)-anchored protein that possesses the ability to modulate cellulose deposition and orient cell expansion in plant cell. we reported here the functional characterization of clcobl1, a conifer cobra-like gene from the differentiating xylem of chinese fir (cunningha ... | 2013 | 23851362 |
| [effects of broadleaf plantation and chinese fir (cunninghamia lanceolata) plantation on soil carbon and nitrogen pools]. | a comparative study was conducted on the soil c and n pools in a 19-year-old broadleaf plantation and a chinese fir (cunninghamia lanceolata) plantation in subtropical china, aimed to understand the effects of tree species on the soil c and n pools. in the broadleaf plantation, the c and n stocks in 0-40 cm soil layer were 99.41 mg.hm-2 and 6. 18 mg.hm-2, being 33.1 % and 22. 6 % larger than those in chinese fir plantation, respectively. the standing biomass and the c and n stocks of forest floo ... | 2013 | 23705377 |
| the regulation of cambial activity in chinese fir (cunninghamia lanceolata) involves extensive transcriptome remodeling. | chinese fir (cunninghamia lanceolata), a commercially important tree for the timber and pulp industry, is widely distributed in southern china and northern vietnam, but its large and complex genome has hindered the development of genomic resources. few efforts have focused on analysis of the modulation of transcriptional networks in vascular cambium during the transition from active growth to dormancy in conifers. here, we used illumina sequencing to analyze the global transcriptome alterations ... | 2013 | 23638988 |
| stand diameter distribution modelling and prediction based on richards function. | the objective of this study was to introduce application of the richards equation on modelling and prediction of stand diameter distribution. the long-term repeated measurement data sets, consisted of 309 diameter frequency distributions from chinese fir (cunninghamia lanceolata) plantations in the southern china, were used. also, 150 stands were used as fitting data, the other 159 stands were used for testing. nonlinear regression method (nrm) or maximum likelihood estimates method (mlem) were ... | 2013 | 23638124 |
| effects of increased nitrogen deposition and rotation length on long-term productivity of cunninghamia lanceolata plantation in southern china. | cunninghamia lanceolata (lamb.) hook. has been widely planted in subtropical china to meet increasing timber demands, leading to short-rotation practices that deplete soil nutrients. however, increased nitrogen (n) deposition offsets soil n depletion. while long-term experimental data investigating the coupled effects related to short rotation practices and increasing n deposition are scarce, applying model simulations may yield insights. in this study, the cenw3.1 model was validated and parame ... | 2013 | 23390533 |
| [characteristics of soil microbial community structure in cunninghamia lanceolata plantation]. | by using dilution plate, fumigation extraction, and phospholipid fatty acid (plfa) methods, this paper studied the quantities of soil microbial populations and the characteristics of soil microbial community structure in a chinese fir (cunninghamia lanceolata) plantation converted from an evergreen broadleaved forest. the results showed that, during the vegetation change from evergreen broadleaved forest to chinese fir plantation, the microbial biomass carbon and the quantities of culturable bac ... | 2012 | 23189690 |
| de novo characterization of the chinese fir (cunninghamia lanceolata) transcriptome and analysis of candidate genes involved in cellulose and lignin biosynthesis. | chinese fir (cunninghamia lanceolata) is an important timber species that accounts for 20-30% of the total commercial timber production in china. however, the available genomic information of chinese fir is limited, and this severely encumbers functional genomic analysis and molecular breeding in chinese fir. recently, major advances in transcriptome sequencing have provided fast and cost-effective approaches to generate large expression datasets that have proven to be powerful tools to profile ... | 2012 | 23171398 |