Multivariate analysis and environmental explanation for community of Akebia trifoliata (Thunb.) Koidz in Zhen′an, Shaanxi
XIE Jiao, XIAO Ya-ping*, LI Xiu-hua1
(Key Laboratory of Ministry of Education for Medicinal Plant Resource and Naturalpharmaceutical Chemistry; College of Life Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
The character of community of Akebia trifoliate (Thunb.) and the relationship between the character and environment were investigated with the method of clustering and PCA ordination, and the quantitative interpretation of community type and the environmental gradients were given by the multivariate regression analysis. The results show that all sampling plots were classed into 2 kinds; the underlying effects of environment gradient on the population distribution was reflected by PCA; two regression equation were received: Y1=0.644+0.012X2-0.005X4(R2=0.509, P>0.05), Y2=1.557+0.01X1-0.069X2(R2=0.797,P
KeyWords:
Akebia trifoliata (Thunb.) Koidz; Community; Multivariate analysis; Environmental explanation
