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作者:

Ding, Yi (Ding, Yi.) | Wang, Hao (Wang, Hao.) | Liu, Yan (Liu, Yan.) | Chai, Beibei (Chai, Beibei.) | Bin, Chen (Bin, Chen.)

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EI Scopus SCIE

摘要:

Urban waterlogging poses a severe threat to lives and property globally, making it crucial to identify the distribution of urban value and waterlogging risk. Previous research has overlooked the heterogeneity of value and risk in spatial distribution. To identify the overlay effect of urban land value and risk, this study employs the Entropy Weighting Method (EM) to assess urban value, Principal Component Analysis (PCA) to determine waterlogging risk and key areas (RK), local Moran's I (SC) to identify key areas (HK), and finally Bivariate local Moran's I (DC) to comprehensively evaluate urban value and waterlogging risk to delineate key areas (BH). The results indicate that waterlogging risk is primarily influenced by proximity to water systems (PCA coefficient: 0.567), population density (0.550), and rainfall (0.445). There is a positive correlation between urban value and waterlogging risk, with a global Moran's I of 0.536, indicating that areas with higher urban value also face greater waterlogging risk. The DC method improved identification precision, reducing the BH area by 6.42 and 3.51 km2 compared to RK and HK, accounting for 25.50 % and 15.76 % of the RK and HK identified areas, respectively. At present, rescue resources can access less than one-third of the area within 5 min, but with the DC method, during the centennial rainfall scenario, the accessibility rate within 5 min for the BH area reaches 63 %, and all BH key areas can be covered within 15 min. This study provides a new methodology for identifying key areas of waterlogging disasters and can be used to enhance urban rescue efficiency and the precision management of flood disasters.

关键词:

Land use value Bivariate spatial autocorrelation Value -risk overlay Risk assessment Urban waterlogging

作者机构:

  • [ 1 ] [Ding, Yi]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing, Peoples R China
  • [ 2 ] [Wang, Hao]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing, Peoples R China
  • [ 3 ] [Liu, Yan]Tianjin Univ, State Key Lab Hydraul Engn Intelligent Construct &, Tianjin 300072, Peoples R China
  • [ 4 ] [Chai, Beibei]Hebei Univ Engn, Coll Water Resources & Hydropower, Collaborat Innovat Ctr Intelligent Regulat & Compr, Handan 056038, Peoples R China
  • [ 5 ] [Chai, Beibei]Hebei Univ Engn, Coll Water Conservancy & Hydropower, Hebei Key Lab Intelligent Water Conservancy, Handan 056038, Peoples R China
  • [ 6 ] [Bin, Chen]Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100875, Peoples R China

通讯作者信息:

  • [Wang, Hao]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing, Peoples R China;;

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来源 :

SCIENCE OF THE TOTAL ENVIRONMENT

ISSN: 0048-9697

年份: 2024

卷: 947

9 . 8 0 0

JCR@2022

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SCOPUS被引频次: 6

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