The ecological distribution and biochemical properties of soil microorganisms under different types of forest on the northern slope of the Changbai Shan Mountain Natural Reserve were studied.The relations between the main vegetation types and ecological distribution of soil microorganisms are as follows:1. The number of soil bacteria under the deciduous forest and the broad-leaved and coniferous mixed forest is greater than that under the coniferous forest.2. The distribution of soil actinomycetes under dif...