海拔对小嵩草植物群落的影响

摘要

The quantitative characteristics and biodiversity of the community was researched by line method for different elevations of Kobresia pygmaea community.The results showed that biomass,species and diversity index increase then decrease with increasing in elevation gradient,reaches its maximum value in middle altitude,ecological dominance increase with rising of elevation and linear changing.%采用样线法对不同海拔小嵩草群落的数量特征、生物多样性等进行了研究.结果表明,物种数、多样性指数均随海拔的升高先增大后减小,在中海拔梯度处达到最大值,生态优势度却随海拔的升高而增大,呈线性变化.