关键词: 沙坡头地区, 昆虫群落, 生态位, 生态位重叠

Abstract: Based on surveys of invertebrate communities by quadrat sampling method, it was studied that the construction of invertebrate communities and the features of functional groups in Tengger desert ecosystem. Also, the niches of main animal groups and the niche overlap between main animal groups were calculated. The results showed that under different desertification controlling approaches the successions of invertebrate community are not same. Artemisia ordosica is the food source and the habitat of the main animal groups. For different functional groups, the groups living on plant roots play a most important role in the community of invertebrate. There only find Larvae of Buprestidae and Larvae of Curculionidae in site A, and no Larvae of Cossidae compared with B, C, D sites. The damage of Artemisia ordosica roots is relatively lighter than that in B, C, and D sites. The distribution of Noctuidae Larvae is same as that of Cossidae Larvae. For all groups of invertebrate in Tengger desert ecosystem, some of them have similarly or same habitats. But there are not relatively larger niche overlaps between them.

Key words: Shapotou region, community of insects, niche, niche overlaps