In this research, BIOLOG method were used to in the field of microbiological ecology to study the microbe communities structure and mucorrhizal fungi under the four tree species in Loess Plateau in Northern Shaanxi Province, and the microbial communities in Pinus tabulaeformis mycorrhizosphere under different ecological conditions. So it is great significance for evaluation mycorrhizal fungi in the role of ecological restoration in regional ecological degradation of soil and vegetation restoration. I...