Evaluation of the natural attenuation capacity of urban residential soils with ecosystem-service performance index (EPX) and entropy-weight methods
Evaluation of the natural attenuation capacity of urban residential soils with ecosystem-service performance index (EPX) and entropy-weight methods
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DOI：
10.1016/j.envpol.2018.03.013
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发表时间：
2018-07-01
影响因子：
8.9
通讯作者：
Chen, Weiping
中科院分区：
文献类型：
--
作者：
Xie, Tian;Wang, Meie;Chen, Weiping
土壤具有使污染物衰减和解毒的作用。自然衰减能力是城市土壤最重要的生态系统服务功能之一。将熵权确定法与生态系统服务功能指数（EPX）模型相结合，对北京市居住区土壤的NAC进行了评价。选择了11个与污染物归宿和迁移的土壤过程相关的参数，并收集了115个居民区土壤样品。结果表明，土壤容重、微生物功能多样性和土壤有机质在NAC评价中的权重较高。城市社会经济指标，如建筑年龄、人口密度、物业管理费等，可用于NAC的动态拟合。城市化对居民区土壤NAC有显著影响。改进后的方法具有合理性和实用性，可作为一种潜在的方法应用于其他定量评价。(C)2018爱思唯尔有限公司版权所有。
Soils provide the service of attenuating and detoxifying pollutants. Such ability, natural attenuation capacity (NAC), is one of the most important ecosystem services for urban soils. We improved the ecosystem-service performance index (EPX) model by integrating with entropy weight determination method to evaluate the NAC of residential soils in Beijing. Eleven parameters related to the soil process of pollutants fate and transport were selected and 115 residential soil samples were collected. The results showed that bulk density, microbial functional diversity and soil organic matter had high weights in the NAC evaluation. Urban socio-economic indicators of residential communities such as construction age, population density and property & management fee could be employed in kinetic fittings of NAC. It could be concluded urbanization had significant impacts on NAC in residential soils. The improved method revealed reasonable and practical results, and it could be served as a potential measure for application to other quantitative assessment. (C) 2018 Elsevier Ltd. All rights reserved.