摘要
通过对2002年9月至2003年3月间上海3种生境类型下土壤动物的调查,共捕获土壤动物3863个,属27个类群,其中绿地中的类群数和个体数多于农田和废弃地。农田中的优势类群为弹尾类(collembola)和蚯蚓类(Oligchaeta);废弃地中的优势类群为线虫类(Nematoda)、双翅类幼虫(Diptera(L))、螨类(Acarina)和弹尾类(Collembola);绿地中的优势类群为线蚓类(Enchytraeidae)和弹尾类(Collembola)。绿地中的优势类群为农田和绿地中的Simpson,优势度指数除12月外均高于废弃地,与Pielou均匀性指数相反,但Shannon-Wiener多样性指数规律不明显。土壤动物的数量和种类在10月份最多,随天气转冷而减少,绿地和废弃地中土壤动物个体数于次年3月份逐渐增多,农田中的于次年1月逐渐增多。表聚性显著,Ⅰ层(0～5cm)最多,Ⅱ(5～10cm)、Ⅲ(10～15cm)两层差异不大。
During the period from December of 2002 to March of 2003, investigations into soil animals living in three different kinds of habitats are conducted in Xuhui district in Shanghai. 3836 soil animals are collected, which belong to 27 genera. The quantity and genera of soil animals in greenery patches is higher than that of farmland and deserted field. The dominant genera in farmland are collembola and oligchaeta. Nematoda, diptera(L), acarina and collembola are the dominant genara in deserted field, and in the greenery patches, enchytraeidae, collembola are dominant. The Simpon dominant indexes of greenery patches and farmland both are higher than those of deserted field except in December, which are contrary to Pielou evenness indexes, but the rules of shannonn-wiener diversity indexes are not obvious. The number and genera of soil animals in three habitats are up to the most in October, but decrease gradually in the following months till March of the next year in greenery patches and deserted field, and January in farmland. A large part of animals centralizes in layerⅠ, and the difference of the distribution of soil animals between layer Ⅱ and layer Ⅲ is not obvious.
出处
《云南环境科学》
2005年第1期22-26,共5页
Yunnan Environmental Science
基金
上海市自然科学基金资助项目(02ZG14069)
