Background:Recently,microbial ecology is becomingan increasingly exciting issue,and a growing number of researches are taking notice of social behavior of natural microbial communities in the environment.However,systematically studying the microbial social relationship with contemporary environmental factors is limited,and the relative essentiality of these variables in shaping microbial communities in natural environments is not well developed.Recent predictive models based on artificial neural network (ANN) have made achievement,but equations obtained from ANN do not have enough biological significance.