洞庭湖湿地小型节肢土壤动物垂直分布及季节变化

The Vertical Distributing and Season Changes of the Small Soil Arthropod in Dongting Swamp

从2003年11月到2004年10月对洞庭湖湿地的4种生态系统中的小型土壤节肢动物群落的组成、垂直结构及数量的季节性变化进行了比较研究。全年调查共获得小型节肢土壤动物27641个,隶属节肢动物门的6纲、24目。4个土壤动物群落中动物类群数和个体数均以针阔混交林茶林竹林阔叶林;4种群落的土壤动物数量和类群数均具有表聚性特征,土壤动物数量随着季节变化波动性很大,以冬、春季数量比较多,夏、秋季数量较少。

The comparative researches on the small soil arthropods in four ecosystems in Dongting Swamp, have been taken from Nov.,2004 to Oct.,2005. Researches cover the small soil arthropods＇ types, the vertical distributing and the change of the quantity with the season. According to the whole year＇s investigation, 2,7641 small soil arthropods, which belong to 6 classes, 24 orders, are found. There are the most soil arthropods in coniferous broad-leaved woods, then tea plantation, then bamboo forest, and the least in broad-leaved woods. In the upper soil, there are most groundl animals and categories. The quantity of soil animals will vary with the season, more in spring and winter, less in summer and autumn.