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西安市农业产地环境土壤重金属污染评价被引量:4
2016年
[目的]掌握和了解西安市农业产地环境土壤重金属污染状况。[方法]对西安市9个涉农区县无公害农产品产地土壤重金属安全现状进行摸底调查,共对609个土壤样品的主要重金属Cd、Hg、As、Pb、Cr进行测定及内梅罗综合指数法评价。[结果]灞桥、长安、高陵、蓝田、临潼、阎良污染等级为1级,属于清洁水平;户县、未央和周至污染等级为2级,污染程度为警戒限,污染水平为尚清洁,整体未受到大面积污染,可以作为无公害农产品生产基地甚至可以作为更优质农产品生产基地。但是有极少部分地区重金属含量超过了土壤环境质量标准,在生产区域规划和产地选择时应予以回避或禁止。[结论]西安市农业产地环境土壤重金属污染状况整体良好。针对西安市未来的发展规划,提出了可行、科学的建议。
杨雍于世锋汪庆华张水鸥刘君黄东亚栗婷任晓姣韩磊王楠王党党
关键词:农产品产地土壤环境污染评价
Evaluation on Soil Heavy Metal Pollution of Agricultural Habitat Environment in Xi'an City
2016年
[Objective] This study aimed to understand and grasp the soil heavy metal pollution status of agricultural habitat environment in Xi'an City. [Method] The soil heavy metal pollution status of pollution-free agricultural products-producing areas in 9 counties (districts) of Xi'an City was investigated. A total of 609 soil samples were collected, and their Cd, Hg, As, Pb and Cr contents were determined. In addition, the heavy metal pollution status of the collected soil samples was evaluated by Nemerow index method. [Result] The pollution in Baqiao, Chang'an; Gaoling, Lan- tian, Lintong and Yanliang was of grade I, belonging to clean level; the pollution in Hu County, Weiyang and Zhouzhi was of grade II, near the warning line, belong to relatively clean level. There was no large-area soil heavy metal pollution overall. The investigated areas could be used as production bases of pollution-free agricultural products and even high-quality agricultural products. However, the heavy met- als contents in some individual areas exceeded relevant soil environmental quality standards, and they should be avoided or forbidden during regional planning and selection of production area. [Conclusion] Soil heavy metal pollution of agricultural habitat environment in Xi'an City is generally at good status. Targeting at the future development plan of Xi'an City, feasible and scientific suggestions are put forward.
杨雍于世锋汪庆华张水鸥刘君黄东亚栗婷任晓姣韩磊王楠王党党
西安市农业产地环境土壤重金属污染评价
为全面掌握和了解西安市农产品产地土壤重金属状况,建立健全农产品产地土壤重金属基础数据库,保护农业产地环境和农业产业布局提供依据。通过对西安市9个涉农区县无公害农产品产地土壤重金属安全现状进行摸底调查,共对609个土壤样品...
杨雍于世锋汪庆华张水鸥刘君黄东亚栗婷任晓姣韩磊王楠王党党
关键词:农产品产地土壤环境污染评价
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