中文摘要：

研究应用BIOLOG技术,对油松、虎榛子不同林型根际土和根围土微生物功能多样性进行了测试,目的是了解油松、虎榛子不同林型中微生物功能多样性变化规律,最终探明在自然森林生态系统中虎榛子的存在对油松的促生作用机理。结果表明：虎榛子纯林根际土的AWCD值增长的最快;微生物群落多样性指数和群落主成分分析都显示混交林根际土中的微生物最为稳定;主成分分析显示,起不同生态作用的主要为糖类,其次是羧酸类、氨基酸类和多聚类化合物。

英文摘要：

To find out rule of microbial functional diversity in Pinus tabulaeformis,Ostryopsis davidiana＇forests,and ultimately prove that Ostryopsis davidiana has the growth-promoting mechanism to Pinus tabulaeformis in natural forest ecosystems,BIOLOG technology was adopted to study microbial community in rhizosphere soil and the soil of surrounding root of pure Pinus tabulaeformis forest、pure Ostryopsis davidiana forest and mixed forests.The results showed：the average well color development（AWCD） of pure Ostryopsis davidiana forest＇s rhizosphere soil increased fastly.Microbial community diversity and community principal component analysis demonstrated mixed forest＇s rhizosphere soil was the most stable;Principal component analysis showed that the carbohydrates,followed by acids,amino acids and cluster-type compounds had the main ecological function.