汾河两岸两种人工林土壤动物群落多样性研究

Study on the Diversity of Soil Animal Communities in Two Different Artificial woodlands in Fen River Region

在临汾地区,对汾河两岸人工杨树林和柳树林土壤动物的群落组成,群落的垂直分布,群落多样性等方面进行了调查研究.结果如下,在该区两类林型中共获得大、中小型土壤动物13类,756只,分属3门7纲.弹尾类和螨类是两林地共有的优势类群,但它们在两类林地中构成的数量比例不同,而常见和稀有类群组成较为复杂且林地间的差异更为突出.土壤动物类群数和个体数在土体中的垂直分布表现为A层最多,B层和C层较少的一般规律,有明显的表聚现象.土壤动物群落的多样性指数(H′)为杨树林大于柳树林,而密度-类群指数(DG)和复杂性指数(Cj)表现为柳树林大于杨树林,DG和Cj比H′更好地反映了群落的复杂性与多样性.

A preliminary study on animal communities in Composition,vertical distribution and biodiversity on the two Fen River artificial woodlands.Result as follows: A total of 756 individuals were collected,belonging to 3 phyla 7 classes and 13 groups.Collembola and Acarina were the dominant groups in the two woodlands,but their proportions in different woodland were difference.There are great differences in the common groups and rare groups of soil animal communities in two woodlands.The character of vertical distribution was that the groups and individuals of soil animals on the A layer more than those on the B and C layers,and soil animals were always assembled on surface layer.The diversity index(H′) of soil animals tended Populus Carr.Woodland>Salix.babylonica L.woodland,the density-group index(DG) and the community complex index(C_j) Salix.babylonica L.woodland > Populus tomentosa Carr.woodland.We found that the density-group index(DG) and the community complex index(C_j) were manifested better than H′in representing the complexity and the diversity of communities.