西藏林芝市不同耕作方式对农田土壤动物群落特征的影响

发布时间：2018-04-30 17:47

本文选题：不同耕作方式 + 土壤动物　；参考：《西南农业学报》2017年01期

【摘要】：为了解西藏林芝市不同耕作方式下土壤动物群落结构、多样性变化,于2014年5-10月对西藏林芝市巴宜区青稞田、玉米田、油菜田及草地采用直径10 cm×10 cm土钻五点取样法,采用改良的Tullgren漏斗分离和收集土壤动物。共捕获土壤动物872只,隶属于4门12纲30目,共计50种,其中节肢动物构成了西藏林芝农田土壤动物的主要类群,占总体个数的85.68%;其次是线虫动物门,占总体个数的9.51%。Simpson优势度指数D(油菜)D(草地)D(青稞)D(玉米);Shannon-Wiener多样性指数H(草地)H(油菜)H(青稞)H(玉米);Pielou均匀度指数E(油菜)E(草地)E(青稞)E(玉米)。在Sorensen相似性系数中,草地-青稞、草地-油菜和玉米-油菜为中等相似,草地-玉米、青稞-玉米和青稞-油菜为中等不相似,且Sorensen相似性系数低于Morisita-Horn系数。本试验表明,西藏林芝市不同土地土壤动物群落常见类群和稀有类群的种类构成和数量随季节变化相对较大,优势类群的种类构成和数量变化较小;通过Sorensen和Morisita-Horn相似性分析,不同土地利用方式对土壤动物的物种丰富度影响较大。
[Abstract]:In order to understand the structure and diversity of soil animal communities in Linzhi City, Tibet, from May to October 2014, a five-point sampling method was used to sample highland barley fields, maize fields, rapeseed fields and grasslands in Bayi District, Linzhi City, Tibet, with a diameter of 10 cm 脳 10 cm soil. Soil animals were separated and collected by improved Tullgren funnel. A total of 872 soil animals, belonging to 4 phyla, 12 classes, 30 orders and 50 species, were captured. Among them, arthropods constituted the main group of soil animals in Linzhi farmland, Tibet, accounting for 85.68% of the total, followed by nematodes. The 9.51%.Simpson dominance index (9.51%.Simpson dominance index) (Brassica napus L. D (Highland barley D) (Shannon-Wiener diversity index) H (Brassica napus L.) (Highland Barley) evenness index (E) (Brassica napus L.) (Epielou evenness index) (Brassica napus L.) Among the similarity coefficients of Sorensen, grassland-barley, grassland-rape and maize-rape were medium similar, grassland-corn, highland barley-corn and highland barley-rape were middle dissimilar, and Sorensen similarity coefficient was lower than Morisita-Horn coefficient. The results showed that the species composition and quantity of the common and rare groups of soil fauna communities in different land in Linzhi city of Tibet changed greatly with the seasons, and the species composition and quantity of dominant groups changed little by using Sorensen and Morisita-Horn similarity analysis. Different land use patterns have great influence on species richness of soil animals.
【作者单位】：西藏农牧学院植物科学学院;西藏高原资源昆虫与应用昆虫实验室;
【基金】：国家自然科学基金(41561054) 西藏自治区地区自然科学基金(2015ZR-13-26) 2013大学生创新实验项目
【分类号】：S154

【相似文献】