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以不同林龄落叶松人工林土壤动物为对象，研究了土壤动物的组成与生态分布土壤动物作为指示环境的综合因子其组成与数量的变化反映了落叶松在不同发育阶段与环境的关系、１９９４年夏在近两个月的时间完成了外业调查工作，共获土壤动物２３２９９个，隶属５门９纲１６目７６科．所研究的四个林龄的土壤动物种类数７龄林＞３７龄林＞２５龄林＞１３龄林；个体密度３７龄林＞２５龄林＞７龄林＞１３龄林；土壤动物个体密度与凋落物现存量关系密切，相关系数为０．９．不同林龄落叶林环境特征不同，７龄林与次生林环境特征相近；１３龄林处于旺盛生长期，对环境压力和影响最大，其林型特点最突出，落叶松发育至２５ａ以后，即在所研究的２５～３７ａ这段时间．环境因子处于相对稳定的发展阶段，故两林型土壤动物区系特征相似。
The composition and distribution of soil fauna are studied in different aged Larix gmelinii plantations. The changes of composition and quantity of soil fauna as an indicator of the environment reflect the relationship between larch and environment at different developmental stages. 1994 In the past two months, the field survey was completed in the summer of last year, and 23,299 soil animal species were obtained, belonging to 5 classes, 9 classes, 16 orders and 76 families. The number of soil animal species studied in the four age groups was as follows: 7-year-old forest> 37-year-old forest> 25-year-old forest> 13-year-old forest; 37-year-old forest> 25- It was closely related to the litterfall stock, with a correlation coefficient of 0.9. The environmental characteristics of deciduous forests at different ages were different, and the environmental characteristics of 7-year-old forest and secondary forest were similar. The 13-year-old forest was in vigorous growth stage, which had the greatest impact on the environmental pressure and the most prominent forest type. After 25 years of larch development, Study 25 ~ 37a this time. Environmental factors in a relatively stable stage of development, so the two forest fauna characteristics similar.