芜湖市郊土壤动物与土壤环境

作者在芜湖市郊七种主要土壤类型中进行了土壤动物调查,共获大、中小型土壤动物3604个,隶属于5门12纲26目32类。其中线虫类、螨类、弹尾类为优势类群;线蚓类、蚁类、蚯蚓类、鞘翅目幼虫为常见类群。结果表明:土壤动物的群落结构与土壤环境有密切关系;自然土壤中土壤动物的数量明显高于耕作土壤;土壤动物的丰富度与土壤有机质含量呈正相关:类群数与个体数随土壤深度的增加而递减。

SOIL ANIMAL AND SOIL ENVIRONMENT IN THE SUBURB OF WUHU CITY

From March to May 1993,We investigated soil types and soil animals in the suburb of Wuhu city.There are Red earth,Yellow-brown soil and Calcareous soil in the netural soil. There are paddy soil and chao soil in the cultivated soil.3734 individul faunas were collec- ted.They belong to 5 phyla,12 classes,26 orders and 32 genera among which the dominant genera are Nematoda,Acari and Collembola;the common genera are Enchytraeidae, Formicidae,Oligochaeta and Coleopiera.These two constitute 94.76% of the total collec- ted population.The analysis shows that the quantities of soil animals in the natural soil more than in the cultivated soil.There is close correlation between the rich degree of soil an- imals and organic matter total N,total P of soil.The individual number of soil animals de- crease with the deepening of soil.