基于功能群性状的伊犁河谷那拉提山地草甸群落组合定量分析

摘要

The research selected the Nalati alpine meadow community in Xinyuan County of Yili valley as experimental site,classified community diversity compositions as herb,forb and legume on the basis of the functional groups and grouped functional traits as abundance,height,cover and biomass,the research results showed as following.The community scale Shannon-Wiener indices of the functional groups varied significantly(P0.05)interannually;the abundances and heights of the forbs varied significantly(P0.05)interannually;the abundances of the legumes varied significantly(P0.05)interannually. The relative heights,relative covers and relative biomass of the herbs were significantly(P0.05)；杂草类的多度和高度年际变化显著(P0.05)；豆科类的多度年际变化显著(P0.05)。禾草类的相对高度、相对盖度、相对生物量分别显著(P<0.01)大于杂草类和豆科类的相应值，杂草类的相对多度显著(P<0.01)大于禾草类和豆科类的相对多度。禾草类SDR显著度显著(P<0.01)大于杂草类SDR和豆科类SDR；杂草类SDR显著(P<0.01)大于豆科类SDR。