Journal of East China Normal University(Natural Sc ›› 2019, Vol. 2019 ›› Issue (3): 144-154.doi: 10.3969/j.issn.1000-5641.2019.03.016

• Ecological and Environmental Science • Previous Articles     Next Articles

A discussion on river network vulnerability in Shanghai based on the PSR model

CHENG Rui-hui1,2, FAN Qun-jie3, WANG Yu-kun1,2, LIU Yao-yi1,2, CHE Yue1,2   

  1. 1. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China;
    2. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal Uviversity, Shanghai 200241, China;
    3. Changning District River Management of Shanghai City, 200050, China
  • Received:2018-04-16 Online:2019-05-25 Published:2019-05-30

Abstract: This paper combines the concept of vulnerability with a study of river network systems. Shanghai, a typical river network area, is selected as the research area. Based on the PSR model, river network vulnerability is evaluated using 13 indicators for human activity and the river network environment; the aim of this study was to explore vulnerability characteristics and driving mechanisms for regional river networks. The results show that:①Urbanization has caused distinct differences in water system characteristics between Shanghai's regions. The river networks in Pudong and Qingpu are densely distributed, but sparse in the central urban area. ②The overall river network vulnerability in Shanghai is intermediate. Extreme and severe vulnerability areas, accounting for 24.64% of the city's total area, are concentrated in the central urban area and the main urban areas of suburbs. The moderate and mild vulnerability areas account for 22.71% and 31.93%, respectively. ③River network vulnerability features spatial clustering with clear heterogeneity; distribution patterns typically show only "high" or "low" aggregation. ④There is significant correlation between the four land use patterns and river network vulnerability, and construction is the main driving factor driving changes in river network vulnerability.

Key words: river network vulnerability, PSR model, AHP, Shanghai

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