Host identity and instinctive ecological function invoke ectomycorrhizal fungal community niche partitioning in various phosphorous sources

1. The difference in ectomycorrhizal fungal community structure under different hosts and different phosphorus.2. Whether there is phosphorus preference and host preference in ectomycorrhizal fungi when using different forms of phosphorus.3. Ecological characteristics of ectomycorrhizal fungi using different forms of phosphorus