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本文对西双版纳国家自然保护区勐仑片和城子、曼峨、曼养广傣族“龙山”４个热带雨林片断土壤动物群落组成及其季节性变动规律进行了比较研究。调查方法：在每片森林沿直角线路布设７个样点，每点取５０ｃｍ×５０ｃｍ面积的枯枝落叶及表层土，用干漏斗法收集土壤动物。干季和雨季各取样１次，统计单位面积个体数量。结果表明，４个热带雨林片断土壤动物由４门９纲２４—２７个类群组成，蜱螨目和弹尾目为优势类群；膜翅目、鞘翅目和双翅目为常见类群；其余类群个体数量相对较少。自然保护区勐仑片和３个“龙山”林区相比较，土壤动物群落组成的共同系数，干季分别为０．５２、０．６８、０．６０；雨季为０．７２、０．８２、０．８１。同一林区干季和雨季土壤动物群落组成的共同系数分别为０．７３、０．７２、０．８２、０．５２，以曼养广“龙山”林区季节变化最大。４片森林土壤昆虫群落的多样性指数（＃ＦＫＨ＇）分别为０．６０、０．９１、０．７１、０．７５；蜱螨目和弹尾目的比值（Ａ／Ｃ）分别为１．１４、５．２４、２．５２、２．３８，以保护区的比值最低。
In this paper, the composition and seasonal variation of soil animal community in four tropical rain forest segments of Menglun Mountain and Manzi, Man’e’a, Manyangguang and ’Longshan’ in Xishuangbanna National Nature Reserve were comparatively studied. Method of investigation: Seven plots were arranged at right angles to each forest, litter and topsoil of 50cm × 50cm in size were taken from each forest, and soil animals were collected by dry funnel method. The dry season and rainy season each sampling 1, the statistical unit area of the individual number. The results showed that the soil fauna of 4 tropical rainforests was composed of 4 groups of 9 species and 24-27 groups, with Acarina and Collembola as dominant groups; Hymenoptera, Coleoptera and Diptera were common groups; the other groups Relatively small. Compared with the three “Longshan” forest areas, the common coefficients of the soil fauna community were 0.52, 0.68 and 0.60 respectively in the Menglun Nature Reserve and the rainy season were 0.72 and 0.82 , 0.81. The common coefficients of soil animal community in dry season and rainy season in the same forest were 0.73, 0.72, 0.82 and 0.52, respectively. The diversity index (#FKH ’) of four insect communities in soils was 0.60, 0.91, 0.71 and 0.75 respectively. The ratio of acarina to tail (A / C) was 1. 14,5.24,2.52,2.38, the lowest ratio of protected areas.