varpart变异方差分析

共线性分析

Warning messages:

1: collinearity detected in cbind(X1,X2): mm = 8, m = 7

2: collinearity detected: redundant variable(s) between tables X1, X2

results are probably incorrect: remove redundant variable(s) and repeat the analysis 

遇到的问题，出现报警信息，但实际上没有报错

解决办法：对环境因子进行PCA分析