生态学杂志2011，Vol.30Issue(5)：897-901,5.
贵州省某土法炼锌点土壤重金属污染现状
Present situation of soil heavy metals contamination in an artisanal zinc-smelting zone of Guizhou, China
摘要
Abstract
An investigation was made on the farmland soil heavy metals concentration and their spatial distribution in a former artisanal zinc-smelting zone of Xinguanzhai, Hezhang County, Guizhou Province, aimed to assess the soil heavy metals contamination after the ceasing of artisanal zinc-smelting activities. The average concentrations of Pb, Zn, Cd, Hg, Cu, and As in surface soil were 337, 648, 9. 0, 0. 44, 121, and 17 mg · kg-1 , being 7. 5, 7. 9, 26. 4, 2. 2, 4. 7 and 0. 8 times as higher as the background values of Guizhou farmland soils, respectively. The single factor pollution index revealed that Cd was the most serious contaminant, followed by Zn, Pb, As, Hg, and Cu. The integral pollution index indicated that within the range of 4 km in the zone, surface soil underwent serious heavy metals combined contamination. Most of the heavy metals accumulated in upper 30 cm soil layer and reduced with soil depth, while Zn and Cd moved downward 15-20 cm due to their higher activity and mobility.关键词
土法炼锌/重金属/土壤污染/污染评价Key words
artisanal zinc-smelting/ heavy metal/ soil contamination/ contamination assessment.分类
资源环境引用本文复制引用
李仲根,冯新斌,闭向阳,孙广义,崔丽峰,王建旭,刘涛泽..贵州省某土法炼锌点土壤重金属污染现状[J].生态学杂志,2011,30(5):897-901,5.基金项目
国家自然科学基金项目(40703023和40903041)、中国科学院西部之光项目和国家高技术研究发展计划项目(2008AA06Z335)资助. （40703023和40903041）
