退化湿地恢复中土壤节肢动物的群落结构

对北京西卓家营退化湿地恢复1年后其中的土壤节肢动物群落结构进行了研究,并与未恢复的荒滩和周围的杏树林中土壤节肢动物群落进行了比较。通过手拣法、Tullgren法对获得的土壤动物进行分离、分类,共获得39类3 226只,隶属4纲19目36科。调查结果显示恢复湿地内土壤节肢动物的个体数、类群数、多样性与荒滩相比均显著增加(p<0.05),而与周边的杏树林没有明显差异(p>0.05)。恢复湿地中紫穗槐、灌木柳、蒙桑、沙棘等4种植物种植区的土壤节肢动物群落结构差异不显著(p>0.05),不同土层间的差异也不显著(p>0.05)。这说明湿地恢复取得了一定的效果,但由于恢复时间较短,仍然处于湿地恢复的初期阶段。

The responses of soil arthropod composition to wetland restoration in Westzhuojiaying, Beijing

By the methods of hand-sorting,Tullgren’s,the soil arthropod composition structure in the wetland restored for a year in Westzhuojiaying of Beijing was investigated,also compared with the wasteland and surrounding apricot forest.A total of 3 226 soil animals in 39 groups belonging to 4 classes,19 orders,36 families were collected.Compared with the wasteland,the number of individuals and groups,and the diversity of the soil arthropods in restored wetland were significantly(p<0.05) increased,while with the surrounding apricot forest not significantly different.The community structure of soil arthropod had no significant difference(p>0.05) among the areas of Amorpha fruticosa,Salix saposhnikovii,Morus mongolica,and Hippophae rhamnoides,also no significant difference(p>0.05) among the different soil layers.The results showed that wetland restoration truly achieved some effects,but it was still in the early stages of recovery due to short restoration time.