湖南省清水塘工业区重金属污染对土壤动物群落生态影响的研究

INFLUENCE OF HEAVY METAL POLLUTION ON SOIL ANIMAL COMMUNITY ECOLOGY IN QINGSHUITANG AREA IN HUNAN

重金属污染对土壤动物的影响主要是常见类群和稀有类群的减少或消失,优势类群中的种类亦明显减少.土壤动物密度与重金属元素浓度呈显著负相关,与土壤有机质含量和PH值相关不密切.大型土壤动物蚯蚓对重金属元素有较强的富集能力.

Qingshuitang is a new industrial area of Hunan Province. And there are lots of met-allurgical and chemical factories. The soil is polluted by heavy metal pesticide and chemi-cal fertilizers in different: degrees,in which heavy metals are major pollutants. Because of the accumulation of heavy metal elements such as As,Hg,Cd,Zn,Pb,Cu in soils,the kinds and amounts of soil animals are sharply decreased. The composition and ecological distribution of soil animal; community are obviously negatively correlated with the con-centrations of heavy metals. Especially,the earthworm is capable of enriching heavy met-als, but as the increase of the concentrations of heavy metals,its .kind is distinctly de-creased.