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Identifying the risk of urban nonpoint source pollution using an index model based on impervious-pervious spatial pattern
Liao, Yunjie; Zhao, Hongtao; Jiang, Zhihui; Li, Jia; Li, Xuyong
2021-3-15
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume288Pages:-
AbstractEfficiently evaluating the risk of urban non-point source pollution (urban-NPS) using only a few parameters is crucial to its management and control, especially in engineering. However, the huge spatial heterogeneity of urban-NPS induced by the high spatial heterogeneity in land use, surface infiltration and surface micro-topography, make it difficult. A new index model composed of transport and source factors was proposed to evaluate the urban-NPS risk. An urban catchment in southern China served to demonstrate the proposed method. The ability of runoff output was characterized by the transport factor in which the impervious-pervious surface spatial pattern, imperviousness ratio and rainfall were taken into account. The pollutants output capacity was represented by source factor where the imperviousness ratio and source-sink transformation resulting from rainfall were considered. Results show the proposed index can identify and evaluate the risk of urban-NPS at both urban parcel scale and catchment scale. The percent bias (PBIAS) of runoff volume helped to assess the performance of the index. PBIAS (1-86%) between the proposed method and the observed runoff was much lower than that (27-448%) between the traditional runoff coefficient method and the observed runoff. These suggest that the proposed index offers a new way of assessing urban-NPS risk. (C) 2020 Elsevier Ltd. All rights reserved.
Department城市与区域生态国家重点实验室
KeywordUrban nonpoint source Hotspot Decision-making Impervious-pervious spatial pattern Sink source transformation
WOS Research AreaGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45484
Collection城市与区域生态国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liao, Yunjie,Zhao, Hongtao,Jiang, Zhihui,et al. Identifying the risk of urban nonpoint source pollution using an index model based on impervious-pervious spatial pattern[J]. JOURNAL OF CLEANER PRODUCTION,2021,288:-.
APA Liao, Yunjie,Zhao, Hongtao,Jiang, Zhihui,Li, Jia,&Li, Xuyong.(2021).Identifying the risk of urban nonpoint source pollution using an index model based on impervious-pervious spatial pattern.JOURNAL OF CLEANER PRODUCTION,288,-.
MLA Liao, Yunjie,et al."Identifying the risk of urban nonpoint source pollution using an index model based on impervious-pervious spatial pattern".JOURNAL OF CLEANER PRODUCTION 288(2021):-.
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