Spatial and temporal characteristics of soil microbial groups in Gaoligongshan

The soil samples were collected in different vegetation types and different altitude gradients at depths of 0-20 cm and 20-40 cm in Gaoligongshan. The amount distribution of soil microbial groups with different vegetation types and different altitude were studied by using the microbial incubation methods. The results showed that with the increase of altitude gradients, most of soil microbial groups showed a single peak trend in their quantities, ie, lowhighlow. The quantity of soil microbial groups was in the order, ammonifying bacteriabacillusdenitrifying bacterialaerobe azotobactenitrifiersazotobacterphosphorus solubilizing bacteriaaerobe cellulose decomposing bacteriaoligotrophic cellulose decomposing bacteria. Total numbers of soil microbial groups in different vegetation types was in the order, broadleaf forestmixed woodshrub forestcoffee landsnowfield.