中文摘要：

对大兴安岭北部塔河县7个森林群落的土壤动物进行研究，将该区土壤动物划分为腐食性、植食性和捕食性动物三个功能类群，无论个体数量还是生物量，腐食性动物所占比例都最大，而植食性和捕食性动物所占比例较小。土壤动物各功能类群在组成、个体数量和生物量等方面均具有相对稳定性，并在一定程度上反映了环境质量。土壤环境条件优越的群落，腐食性动物的个体数量及生物量所占比例相应较大。与小兴安岭森林土壤动物相比，大兴安岭地区腐食性动物所占比例减小，植食性和捕食性动物所占比例相应增加。各地区的共有类群反映了大环境的相似程度，而特有类群则反映出各自局地环境的特殊性，它们对生态系统具有指示作用。

英文摘要：

The investigations of soil animal guilds and their ecological characteristics in seven forest communities were conducted in Tahe region, northern Da Hinggan Mountains of China. The results showed that soil animals were divided into three guilds based on their feeding function, i.e. saprozoite, phytophage and predacity, of which the saprozoite was predominant guild compared with other two guilds in both number of individuals and biomass. Each soil animal guilds possessed relative stability in composition,number of individuals and biomass, and they reflected the quality of the environment to some extent. In the community, which the soil conditions were more predominant, saprozoic animals accounted for larger proportion in both number of individuals and biomass. Compared with the soil animals in the Xiao Hinggan Mountains, the proportion of saprozoic animals decreased, while phytophage and predacity animals relatively increased in Da Hinggan Mountains. The common community of each region reflected the similarity of large environment, while the particular one reflected the particularity of their own environment conditions, and the particular one could indicate the ecosystems.