Species Composition and the Aboveground Biomass of Stipa glareosa Community in Desert Steppe
Based on the four years (2010～2013) investigation of the Stipa glareosa plant communities in Erenhot desert steppe of Inner Mongolia.The results showed that the species composition of Stipa glareosa community was relatively poor,after four years fencing there was no markedly change in species.Diversity index was positively correlated to homogeneity index(R2 =0.97,P＜0.05).The important values of main species were negatively correlated with diversity index.The aboveground biomass was significantly positively correlated to precipitation (R2 =0.96,P ＜ 0.05).The density and variation of aboveground biomass of Salsola collina had great effect on the total density and above biomass.
NETL
NSTL
万方数据
维普
