农业环境科学学报2024，Vol.43Issue(11)：2565-2574,10.DOI:10.11654/jaes.2024-0898
江西某煤矿区修复成效评估与生态风险评价
Assessment of restoration effect and ecological risk in a coal mine area in Jiangxi Province
摘要
Abstract
To investigate the effectiveness of ecological restoration projects in controlling the sources of soil pollution,a pollution assessment and ecological risk evaluation of Cd in the surrounding environment of the mining area were conducted.This study systematically investigated the environmental quality of coal gangue,newly covered soil in the mining area,agricultural soil,irrigation water,and sediment in a mining area in Jiangxi.Cd in the samples was analyzed and tested,using Moran′s I,geo-accumulation index,and ecological risk index to evaluate the source-sink relationship,pollution level,and ecological risk of Cd in the mining area and its surrounding surface environment.The results indicate that the soil surrounding the mining area is influenced by multiple factors,including coal gangue,newly covered soil in the mining area,and local natural background.The Cd content(0.33 mg·kg-1)falls between that of coal gangue and newly covered soil,pollution level(Igeo:-2.03 to 0.37)ranging from slightly polluted to moderately polluted,ecological risk(Er:11 to 58)ranging from low to moderate.The study demonstrates that the soil restoration project in the mining area is significantly effective.The Cd content,pollution level,and risk level in the surrounding agricultural soil are all significantly reduced compared to coal gangue.However,during land development and utilization,attention must be paid to the issue of soil acidification,and measures should be taken promptly to avoid the release of large amounts of heavy metals due to acidification.关键词
煤矿/镉/生态风险/评价/江西Key words
coal mine/Cd/ecological risk/assessment/Jiangxi分类
资源环境引用本文复制引用
刘旭,冯瑶,梁家辉,邓陈宁,何泽新,谢明辉,师华定..江西某煤矿区修复成效评估与生态风险评价[J].农业环境科学学报,2024,43(11):2565-2574,10.基金项目
国家重点研发计划项目(2022YFC3704805) （2022YFC3704805）
国家自然科学基金项目(42377259) （42377259）
萍乡历史遗留煤矿区耕地源头管控成效评估项目National Key Research and Development Program of China(2022YFC3704805) （2022YFC3704805）
National Natural Science Foundation of China(42377259) （42377259）
Assessment of the Effectiveness of Source Control of Heavy Metal Pollution in Farmland of Typical Historical Coal Mine Areas in Pingxiang （）
