交错区复杂的生境常常导致相对较高的物种多样性。为探讨牧压条件形成的林牧交错区土壤动物多样性,研究了川西亚高山典型林牧交错区的土壤动物群落结构与多样性。在交错区5种生境下,共获得土壤动物49837只,隶属7门16纲33目126类。从草甸到针叶林的过渡生境中,土壤动物明显受到放牧干扰影响,其个体密度随干扰的减弱呈逐步上升趋势,而类群数则呈单峰型变化趋势;Shannon-Wiener、DG多样性指数都呈现逐步上升趋势;Wilson-Shmida多样性指数表明相邻干扰梯度下土壤动物类群替代率相近。大型土壤动物生物量在草甸最低,阔叶林最高。CCA排序显示凋落物厚度与中小型土壤动物存正相关,pH与其存负相关,不同类群对环境因子响应存在差异。这些结果表明农牧交错区不同干扰梯度下土壤动物群落结构和多样性存在明显差异。 Complex habitats in the interlaced area often result in relatively high species diversity. In order to explore the diversity of soil fauna in the ecotone between forest and animal husbandry in the pastoral conditions, the community structure and diversity of soil fauna in the typical forest-pastoral ecotone in sub-alpine region of western Sichuan were studied. A total of 49837 soil animals were obtained under the five habitats in the interlaced area, belonging to 126 groups, 16 orders, 33 orders and 126 categories. In the transition habitat from meadow to coniferous forest, the soil fauna was significantly affected by grazing disturbance. The individual density gradually increased with the decrease of disturbance, while the number of taxa showed a monomodal variation trend. Shannon-Wiener DG diversity The indexes of Wilson-Shmida diversity showed that the replacement rates of soil fauna were similar under the adjacent disturbance gradient. The biomass of macrofauna was the lowest in meadow and the highest in broad-leaved forest. The results of CCA showed that litter thickness was positively correlated with small and medium sized soil fauna, and pH was correlated with their negative and negative values. There was a difference in environmental response among different groups. These results indicate that there are significant differences in soil animal community structure and diversity under different disturbance gradients in the ecotone between agriculture and animal husbandry.