灭除狼毒10年后不同放牧方式亚高山草地植物群落和土壤理化特征变化

摘要

In Qilian mountain area, characteristics of vegetation community, soil carbon and nitrogen were investigated and analyzed in grassland where Stellera chamaejasme has been controlled chemically in 2000. The results indicated that, the important value of Stellera chamaejasme of chemically controlled grassland significantly decreased (P<0. 01) , while the vegetation community Shannon-winner diversity index and Margalef richness index of chemically controlled grassland increased significantly (P