黔西南金矿区苔藓植物附生及其表土原生动物群落生态特征

The ecological characteristics of protozoa communities on mosses and their topsoil from gold mine areas in southwesten Guizhou,P.R.China

对黔西南三个金矿区的三种优势苔藓植物,即黄牛毛藓Ditrichum pallidum(Hedw.)Hamp.、土生对齿藓Didymodon vinealis(Brid.)Zander和硬叶对齿藓Didymodon rigidulusHedw.上附生及其表土的原生动物群落特征进行了研究,结果表明:矿区苔藓附生原生动物种类数为35种,表土中为15种,群落组成有较大差异。泥堡金矿与紫马金矿的苔藓附生及表土原生动物群落相似性比泥堡金矿与王家湾金矿的相似性要小,而紫马金矿和王家湾金矿的相似性较高,表明不同金矿区及金矿类型对其群落结构产生差异。似肾形虫Colpoda simulans为苔藓附生及表土原生动物的优势种类。

The protozoan communities associating with mosses [Ditrichum pallidum（Hedw.） Hamp.,Didymodon vinealis（Brid.） Zander and Didymodon rigidulus Hedw.] and in their topsoils in three gold mining areas of southwestern Guizhou have been studied.The results showed that 35 species were identified in mosses and 15 species in topsoils,and the community composition had great differences.The similarity of protozoan community in mosses and topsoils in Nipu gold mine and Zima gold mine was less than the similarity in Nipu gold mine and Wangjiawan gold mine,and the similarity was higher in Nipu gold mine and Wangjiawan gold mine.It indicated that different district and types of gold mine affected their community structure.Colpoda simulans is dominant species on mosses and topsoils.