生态学报2017，Vol.37Issue(18)：6128-6137,10.DOI:10.5846/stxb201606231230
典型棕地修复前后土壤重金属生态风险变化——以江西贵溪冶炼厂为例
Changes in the ecological risk of heavy metals after soil remediation in a typical Brownfield: A case study of Guixi smelter in Jiangxi Province
摘要
Abstract
To date,few studies have addressed the ecological risk around brownfield areas in China,and most of these studies have only evaluated the potential harm of the risk source,without considering whether the risk receptor can withstand the ecological risk.Therefore,in order to conduct a more comprehensive ecological risk assessment,this paper added the risk receptor analysis in the ecological risk assessment of the area surrounding a brownfield area and ecological risk assessment of the surrounding areas included both hazard analysis of the risk sources and ecological vulnerability analysis of the risk receptors.In addition,few studies have examined the change of ecological risk over time.Therefore,the present study measured ecological risk at two time points.GIS spatial analysis,which was used to determine spatial differences in ecological,indicated that,before remediation,the Sumen area,Jiuniugang,the Shuiquan area,and Chuanshanlong posed a very strong ecological risk,whereas the Shenjia-Linjia and Changtangzhoujia areas posed a medium risk.The ecological risk was greatly reduced following remediation,and the previously very strong-risk areas were reduced to the strong risk level,whereas the medium-risk areas were reduced to the low risk level.This demonstrated the effectiveness of remediation while there were still some regions,even though only a small part,were in strong-risk levels and they should be strengthened to restore in the future.In the present study,the ecological vulnerability of cultivated land was the largest.It is necessary to further remediate some regions which have the strong vulnerability and large risk to improve the ecological levels.Therefore,areas with large ecological vulnerability and low ecological risk should be targeted for improved monitoring and prevention measures,in order to avoid the occurrence of strong risk.关键词
棕(褐)地/生态风险/重金属Key words
brownfield/ecological risk/heavy metals引用本文复制引用
张金婷,孙华,谢丽,侯大伟..典型棕地修复前后土壤重金属生态风险变化——以江西贵溪冶炼厂为例[J].生态学报,2017,37(18):6128-6137,10.基金项目
国家自然科学基金项目(41371484) （41371484）
教育部云数融合科教创新基金课题(2017A10051) （2017A10051）
