长江经济带土壤重金属污染分布特征及影响因素  

Spatial Distribution Characteristics and Influencing Factors of Soil Heavy Metal Pollution in the Yangtze River Economic Belt

作　　者：梁宗正 胡碧峰 谢模典 倪晗杰 李洪义 LIANG Zongzheng;HU Bifeng;XIE Modian;NI Hanjie;LI Hongyi(Academy of Regional and Global Governance,Beijing Foreign Studies University,Beijing 100081,China;School of Public Finance and Public Administration,Jiangxi University of Finance and Economics,Nanchang 330013,Jiangxi,China;Key Laboratory of Data Science in Finance and Economics,Jiangxi University of Finance and Economics,Nanchang 330013,Jiangxi,China;Key Laboratory of Environment Remediation and Ecological Health(Ministry of Education),Zhejiang University,Hangzhou 310058,Zhejiang,China)

机构地区：[1]北京外国语大学区域与全球治理高等研究院,北京100081 [2]江西财经大学财税与公共管理学院,江西南昌330013 [3]江西财经大学财经数据科学重点实验室,江西南昌330013 [4]浙江大学污染环境修复与生态健康教育部重点实验室,浙江杭州310058

出　　处：《经济地理》2023年第9期148-159,171,共13页Economic Geography

基　　金：中央高校基本科研业务费专项资金(2022QD010);浙江大学环境修复与生态健康教育部重点实验室开放基金资助项目(EREH202206);浙江省公益技术应用研究项目(LGN22D010003)。

摘　　要：随着经济的快速发展和城镇化的持续推进,长江经济带面临严峻的生态环境污染和退化问题,尤其是土壤重金属点源污染问题日益突出。文章通过文献搜集整合了2008—2018年期间覆盖长江经济带11省市100个城市土壤重金属含量数据,借助地质累积指数、健康风险评估、空间统计分析等模型对该区域内土壤重金属累积及污染特征进行分析。研究发现:(1)长江经济带不同地区土壤重金属含量富集存在较大空间异质性。(2)Cd和Hg元素为长江经济带主要土壤重金属污染物。(3)儿童群体面临的重金属暴露带来的健康风险最高,重金属暴露带来的潜在致癌风险明显高于非致癌风险,且高风险城市主要集中于湖南、江西、云南和贵州等地。(4)工业生产活动、经济发展水平以及人口密度等因素与土壤中重金属的累积密切相关。With the rapid development of economy and the continuous advancement of urbanization,it has severe ecological environmental pollution and degradation problems in the Yangtze River Economic Belt,especially the point source pollution of heavy metals in soil.Based on the soil heavy metal content data of 100 cities in 11 provincial-level regions of the Yangtze River Economic Belt from 2008 to 2018,this paper quantitatively analyzes the characteristics of heavy metal accumulation and pollution in soil in 11 provincial-level regions by the means of geoaccumulation index,health risk evaluation,spatial correlation analysis and other models.The results showed that:1)The concentration of heavy metals in soils had great spatial heterogeneity in different regions of the Yangtze River Economic Belt.2) Cd and Hg elements are the main soil heavy metal pollutants in the soil of the Yangtze River Economic Belt.3) The health risks brought by heavy metal exposure were the highest in children,and the potential carcinogenic risk brought by heavy metal exposure was significantly higher than the non-carcinogenic risk,cities with the high risk were mainly concentrated in Hunan,Jiangxi,Yunnan and Guizhou.4) Industrial production activities,economic development level and population density and other factors are closely related to the accumulation of heavy metals in the soil.The research can provide theoretical support and scientific basis for the prevention and control of heavy metal pollution and the management and improvement of ecological environment quality in the Yangtze River Economic Belt.

关 键 词：长江经济带 土壤重金属 污染 背景值 地质累积指数 健康风险 生态环境 

分 类 号：X825[环境科学与工程—环境工程]