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首页> 外文期刊>Environmental Monitoring and Assessment >Pollution status and ecological risk of heavy metals in the soils of five land-use types in a typical sewage irrigation area, eastern China
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Pollution status and ecological risk of heavy metals in the soils of five land-use types in a typical sewage irrigation area, eastern China

机译：中国典型污水灌溉区土壤中污染状况与重金属的生态风险，中国东部污水灌溉区

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摘要

Sewage irrigation has been widespread in the water shortage area of eastern China and inevitably tends to result in heavy metal accumulation in soils. A total of 148 surface soil samples from five land-use types were collected in Longkou, a typical sewage irrigation area of China, and As, Cd, Cu, Pb, and Zn concentrations were determined. The Nemerow index method and improved fuzzy comprehensive evaluation method were used to examine the pollution status of heavy metals. The potential ecological risk was evaluated by the Hakanson model by adjusting the assessment threshold, and its spatial distribution was interpolated using geostatistical techniques. As, Cd, Cu, Pb, and Zn accumulated in different amounts in the five land-use types. Urban industrial land and mining land were moderately polluted, irrigated land was slightly polluted, orchards were minimally polluted, and bare land was at a safe level of pollution. Cd exhibited high percentages of strong and severe levels of potential ecological risks. For Cd, irrigated land, orchard, and bare land mainly presented moderate risks, whereas urban industrial land and mining land mainly presented high risks. The comprehensive ecological risk of the five heavy metals was at a severe level for all tested land-use classes except for bare land.
机译：污水灌溉在中国东部的缺水区普遍存在，不可避免地导致土壤中的重金属积累。在龙口的典型污水灌溉面积中收集了来自五种土地使用类型的148种表面土壤样品，并确定了CD，Cu，Pb和Zn浓度。 Nemerow指数方法和改进的模糊综合评价方法用于检查重金属的污染状态。通过调整评估阈值，通过调整议司机模型评估潜在的生态风险，并且使用地统计技术内容其空间分布。如图，CD，Cu，Pb和Zn在五种土地使用类型中的不同量累积。城市工业陆地和采矿土地受到适度污染，灌溉土地略有污染，果园污染了很多污染，赤裸的土地处于安全的污染水平。 CD表现出高百分比的强大和严重的潜在生态风险。对于CD，灌溉土地，果园和裸机主要呈现温和风险，而城市工业用地和矿地主要呈现出高风险。除赤土土地外，五种重金属的综合生态风险对所有测试的土地使用课程都是严重的水平。

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  • 来源
    《Environmental Monitoring and Assessment》 |2020年第7期|471.1-471.14|共14页
  • 作者

    Li Chunfang; Cao Jianfei; Yao Lei; Wu Quanyuan; Lv Jianshu;

  • 作者单位

    Shandong Normal Univ Coll Geog & Environm Jinan Shandong Peoples R China|Shandong Jiaotong Univ Coll Commun & Civil Engn Jinan Shandong Peoples R China;

    Shandong Normal Univ Coll Geog & Environm Jinan Shandong Peoples R China;

    Shandong Normal Univ Coll Geog & Environm Jinan Shandong Peoples R China;

    Shandong Normal Univ Coll Geog & Environm Jinan Shandong Peoples R China;

    Shandong Normal Univ Coll Geog & Environm Jinan Shandong Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Land-use type; Heavy metal; Pollution status; Ecological risk; Soil;

    机译：土地使用类型;重金属;污染状况;生态风险;土壤;

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