那拉提山地草甸群落夏季放牧地群落物种研究

The Study of the Summer Grazing Land Community Synthesis in the Nalti Sub-Alpine Meadow Community

通过对那拉提山地草甸群落夏季放牧地调查采样,以探讨其草地群落物种组成、功能性状和群落结构.结果显示,夏季放牧地草地中共出现21种,属11科;群落物种多样性呈集中分布,杂草类物种组成增加,禾草类和豆科类物种组成减少,杂草类的相对多度(p<0.001)、相对盖度(p<0.001)、相对生物量(p<0.001)和相对重要性(p<0.001)显著高于禾草类和豆科类所对应值.根据相对重要性值的分析,在那拉提山地草甸夏季放牧地群落形成以杂草类为主的群落组合格局.

By sampling the summer grazing land community in the Nalati sub-alpine meadows,the paper explores the species composition,plant functional traits and community structure.The result shows the summer grazing land community consists of 21 species belonging to 11 taxonomic families.Species distributions clumped,the forbs increased and the herbs and legumes decreased.The relative abundances(p<0.001),the relative covers(p<0.001),the relative biomasses(p<0.001)and the relative important values(p<0.001)of forbs are significantly higher than the reciprocal values of both herbs and legumes.According to the relative important values,the forbs dominated the summer grazing land community in the Nalati sub-alpine meadows.