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-  2018 

平原区浅层地下水污染风险评价 Shallow groundwater pollution risk evaluation in plain areas

Keywords: 浅层地下水,污染风险,突变级数,评价

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Abstract:

人类活动产生的污染源已对地下水环境构成严重威胁,尤其是浅层地下水.充分考虑人类活动因素对地下水污染风险的影响,从污染源荷载、渗透补给条件、含水层岩性、社会经济等方面构建评价地下水污染风险指标体系.根据突变理论,建立平原区浅层地下水污染风险突变评价模型.以天津市为例进行实例应用,结果表明,较高风险、中度风险和较低风险区面积分别为963.6、2 540.6、7 395.6km2,较高风险区主要分布于市区周边环城4区的11个乡镇,以及滨海新区的2个乡镇.计算结果符合客观实际,与实测氨氮浓度分布吻合较好.验证了所提指标和评价模型的合理有效性

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