| [effects of different de-farming and reafforestation patterns on changes of soil fertility quality in karst region of southwestern china]. | a ten-year fixed site harnessing was conducted in the severely eroded karst region of ziyun county, guizhou province by adopting four different de-farming and reafforestation patterns, and the properties of soil chemistry, soil microbiology, and soil enzymology after harnessing were determined in 2003. the results showed that the total amount of soil microbes and the individuals of bacteria, fungi and actinomyces were increased obviously, the activities of soil hydrolytic and oxidoreductive enzy ... | 2005 | 16252867 |