Wu Donghui, Zhang Bai, Chen Peng
Northeast Institute of Geography and Agricultural Ecology, Chinese Acadenmy of Sciences, Changchun 130012, China.
Ying Yong Sheng Tai Xue Bao. 2006 Mar;17(3):450-6.
In this paper, an investigation on the species richness and abundance of soil nematodes in farmland, natural secondary forest, shelter forest and green space was made in Changchun City in July and September, 2003. Soil nematodes were extracted with Baermann extractor, and identified to the genus level with the aid of microscope. A total of 7273 soil nematode individuals were captured, and fell into 2 classes, 7 orders, 20 families, and 27 genera. Aphelenchus, Tylenchus and Pratylenchus were the dominant genera, which accounted for 61.58% of total individuals. Land use type had a significant effect on the community structure of soil nematodes, and aboveground litter removal and cultivation activity were the main factors affecting soil nematodes community structure. Above-ground litter removal considerably decreased soil nematodes individual density and community diversity, while cultivation activity changed the vertical distribution of soil nematodes individual density in the soil profile. Above-ground vegetation structure and landscape pattern appeared to have little effect on the ecological structure of soil nematodes community.
2003年7月和9月，对长春市农田、天然次生林、防护林和绿地土壤线虫的种类丰富度和丰度进行了调查。采用贝曼氏漏斗法提取土壤线虫，借助显微镜鉴定到属级水平。共捕获7273条土壤线虫个体，分属2纲、7目、20科、27属。滑刃属、垫刃属和短体属为优势属，占个体总数的61.58%。土地利用类型对土壤线虫群落结构有显著影响，去除地表凋落物和耕作活动是影响土壤线虫群落结构的主要因素。去除地表凋落物显著降低了土壤线虫的个体密度和群落多样性，而耕作活动改变了土壤线虫个体密度在土壤剖面中的垂直分布。地表植被结构和景观格局对土壤线虫群落的生态结构影响较小。
