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西安城市居民区土壤重金属健康风险评价
  • ISSN号:0564-3945
  • 期刊名称:《土壤通报》
  • 时间:0
  • 分类:S15[农业科学—土壤学;农业科学—农业基础科学]
  • 作者机构:[1]陕西学前师范学院环境与资源管理系,陕西西安710061, [2]陕西师范大学旅游与环境学院,陕西西安710062
  • 相关基金:国家自然科学基金项目(41271510)、陕西省教育厅科学研究计划项目(14JK1180)和陕西学前师范学院科研基金(2013KJ056)资助
中文摘要:

城市化过程中各种人类活动的废弃物进入土壤生态系统后经由多种方式对城市居民健康产生威胁,城市居民区作为人类密集活动的场所,土壤重金属污染的健康风险更为值得关注。通过实验数据的分析可知西安市居民区土壤中Pb、Cu、As的污染相对较重而Ba、Co、Cr、Ni、Zn的污染相对较轻,这八种元素产生的健康风险均在可接受范围之内,但对成人与儿童的风险大小具有一定差异。多元统计分析与基于ARCGIS的地统计分析的结果表明Ba-Co-Zn的累积主要与交通、工业、居民区内部活动有关,其空间分布表现为西部高东部低的特征;Cu-Pb的累积主要受交通活动和垃圾堆放等活动影响,空间分布上在城市中心偏北存在两个极值中心;As-Ni累积主要受成土母质影响,叠加有轻微的化石燃料燃烧等人类活动,城市中心为其高值区;Cr的累积主要与交通活动相关,空间分布特征表现为西部低而东部、北部高。

英文摘要:

The various wastes from human activities, which have been into the urban soil ecosystem, threatened the health of urban residents via many ways in the process of urbanization. The health risks of soil heavy metal contamination should be paid more attention in residential area with intensive activities. The analysis results of experimental data showed that soil Pb, Cu, As were more heavily polluted and Ba, Co, Cr, Ni, Zn were relatively light polluted in residential area, Xi'an City. For adults and children, the health risks of Pb, Cu, As, Ba, Co, Cr, Ni, Zn were within the acceptable range, but had many differences between them. The spatial distribution and sources were studied by multivariate analysis and geostatistics analysis. The accumulation of Ba-Co-Zn was mainly related with transportation, industrial, and residential activities and their spatial distribution characteristics tended to be lower in west region and higher in east region. The accumulation of Cu-Pb was mainly affected by the vehicles emission and garbage dumps and had two high-value region in the city center. The accumulation of As-Ni was mostly influenced by parent material and less by fossil fuel combustion emissions, and their spatial distribution performance for its high value area in the city center. The accumulation of Cr was mainly associated with traffic activities, which was higher in eastern and northern region and lower in western region.

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期刊信息
  • 《土壤通报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国土壤学会
  • 主编:张玉龙
  • 地址:沈阳市东陵路120号
  • 邮编:110866
  • 邮箱:trtb@periodicals.net.cn
  • 电话:
  • 国际标准刊号:ISSN:0564-3945
  • 国内统一刊号:ISSN:21-1172/S
  • 邮发代号:8-15
  • 获奖情况:
  • 辽宁省优胜期刊,中国土壤学会土壤通报编委会先进集体
  • 国内外数据库收录:
  • 美国化学文摘(网络版),日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:32491