黄土丘陵区林-草景观边界土壤表层大型动物多样性研究

文章通过对黄土高原丘陵区刺槐林-草地复合系统景观边界上3种景观位置的土壤表层大型动物调查、分析,结果表明:复合系统共有大型土壤动物16类,隶属于3门6纲;林缘处是土壤表层大型动物多样性最高的地方,这里土壤动物群落较复杂,类群数较多,分布均匀;草地是土壤表层大型动物多样性最低的地方,这里土壤动物群落较单一,土壤动物类群数偏少,个体数偏多,分布的均匀性较差,优势类群表现突出;林地的土壤表层大型动物多样性介于二者之间。林缘与林地内土壤动物的分布特征相似性较大,林缘与草地内土壤动物的分布特征相似性较小。

Diversity of large animals in top soil layers on forest and grass scenic borders in Loess hilly areas

In this paper,surveys and analysis of large animals in top soil layers on 3 locations on scenic borders of Robinia pseudoacacia forests and grasslands systems in Loess hilly areas were conducted.The results indicated that there were 16 kinds of large soil animals generally in the compound systems,which belonged to 3 phyla and 6 classes;forest borders were places where diversity of large animals in top soil layers was highest and communities of soil animals were complicated,number of species was rich and distributed evenly;grasslands were places where diversity of large animals in top soil layers was lowest and communities of soil animals were singularity,number of species was fewer and individuals were rich and distributed unevenly,and dominant species behaved outstandingly;diversity of large animals in top soil layers on forest land was between that for forest borders and grassland.Comparability of distribution characteristics for soil animals on borders and in forests was great,and comparability of distribution characteristics for soil animals on borders and in grasslands was small.