干旱区不同土地利用类型下土壤螨类群落多样性比较

Comparison of Community Diversity of Soil Mites under Different Land-use Types in Arid Area of Xinjiang, China

  • 摘要:目的 】了解干旱区不同土地利用类型下土壤螨类群落多样性特征,对土壤螨类群落结构进行比较研究。【 方法 】采用野外采样和改良的Tullgren法,对鄯善县7种不同土地利用类型土壤螨类进行分类鉴定及比较分析。【 结果 】共捕获土壤螨类26 637只,隶属于4亚目69科98属,其中甲螨亚目21 209只,49属,38科;中气门亚目3 702只,22属,16科;前气门亚目1 209只,22属,13科;无气门亚目517只,5属,2科。在不同土地利用类型下土壤螨类个体数、类群数和多样性之间均有显著差异(P<0.05),其中防护林多样性最高,而耕地最低。【 结论 】不同土地利用差异对土壤螨类群落多样性影响明显,其中地表凋落物和人为活动干扰是影响干旱区螨类群落多样性的主要因素。

     

    Abstract:Objective 】 In order to understand the diversity characteristics of soil mite community under different land use types in arid area, the community structure of soil mites in Shanshan County was comparatively studied.【 Method 】The comparative investigation was conducted by using the conventional field sampling method and modified Tullgren method to classify, identify and compare soil mites of 7 different land use types in the Shanshan County of Xinjiang, China.【 Result 】A total of 26,637 individuals of soil mites were collected, which belonged to 69 families, 98 genera of Acari. Among them, oribatida was 21,209 individuals, 49 genera, 38 families; Mesostigmata was 3,702 individuals, 22 genera, 16 families; Prostigmata was 1,209 individuals, 22 genera and 13 families, and Astigmata was 517 individuals, 5 genera and 2 families. There were significant differences in individual number, group number and community diversity of soil mites in different land use types (P<0.05). Among them, shelterbelt diversity was the highest, while cultivated land was the lowest.【 Conclusion 】The differences of the different land-use types have obviously impacts on the community diversity of soil mites, the litter content and human activity disturbances were the main factors affecting the community diversity of soil mites in that area.

     

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