Soil microbial diversity of herb layer in three broad-leaved Korean Pine Forests

Taking Xiaoxing’anling as the research object, the soil microbial diversity of herb layer in 3 types of Broad-leaved Korean Pine Forests was studied by using BIOLOG method. The results showed that, the trend of the Average well color development (AWCD) value was different in different season, and the order was as following: Quercus mongolica Pine ForestTilia amurensis Rupr Pine ForestBetula platyphylla Suk Pine Forest in spring; Q.mongolica Pine ForestT.amurensis Rupr Pine ForestB.platyphylla Suk Pine Forest in summer; T.amurensis Rupr Pine ForestQ.mongolica Pine ForestB.platyphylla Suk Pine Forest in autumn; T.amurensis Rupr Pine ForestQ.mongolica Pine ForestB.platyphylla Suk Pine Forest in winter. Microbial diversity indexes varied with soil depths: species richness index (SW), species dominance index(SP) and species evenness index(McIntosh) of soil microbial diversity in Q.mongolica Pine Forest were highest, and significantly higher than that of B.platyphylla Suk Pine Forest. The conclusion can be like that, microbial diversity of herb layer in Primary Broad-leaved Korean Pine Forests is richer than that in Larch Pure Forest.