三峡库区典型支流沉积物重金属污染特征及评价分析

大型水利工程对生态环境具有直接的影响,也是近年来国内外关注的焦点,由于我国三峡库区水环境中的重金属所具备的化学特性较为繁杂,直接关系到生态效应。目前,这也是水利、环境与生态领域着重研究的课题。由于金属主要是通过沉淀或者共沉淀的形式向底质进行迁移,导致大部分金属都会集中在底质的沉积物中。文章结合现阶段三峡库区典型支流沉积物重金属污染的实际情况,依据其污染特征,展开详细评价分析。

Large-scale water conservancy projects have a direct impact on the ecological environment,and have been the focus of attention at home and abroad in recent years.Because of the complex chemical characteristics of heavy metals in the water environment of the Three Gorges Reservoir area,the projects are directly related to the ecological effect.At present,this is also an important research topic in the field of water conservancy,environment and ecology.Because metals are mainly transported to the sediment by precipitation or co-precipitation,most of the metals will be concentrated in the sediment.Based on the actual situation of heavy metal pollution in the sediment of typical tributaries in the Three Gorges Reservoir area,the paper makes a detailed evaluation and analysis based on the characteristics of heavy metal pollution.