| metal bioaccumulation in plant leaves from an industrious area and the botanical garden in beijing. | the concentrations of fe, mn, al, zn, pb, ni, cr, and as were measured in soils and leaves from 21 plant species growing on hills near the beijing steel factory (bsf) and 17 plant species in the beijing botanical garden (bbg). the results showed that soils from bsf were zn contaminated according to the threshold of natural background of china. there was a metal contamination of the soils by ni, and cr in bsf comparing with those in bbg. the comparison between concentrations of metals in leaves f ... | 2005 | 16295909 |
| invasion possibility and potential effects of rhus typhina on beijing municipality. | rhus typhina, an alien species introduced from north america, was identified as a main afforestation species in beijing municipality. however, its invasiveness is still at odds. to clarify this problem, we applied the north american screening system and the australian screening system to preliminarily predict its invasion possibility. both screening systems gave the same recommendation to "reject". the geographical distribution was surveyed, with the population features of r. typhina against the ... | 2008 | 18713419 |