华东师范大学学报(自然科学版) ›› 2019, Vol. 2019 ›› Issue (3): 144-154.doi: 10.3969/j.issn.1000-5641.2019.03.016

• 生态与环境科学 • 上一篇    下一篇

基于PSR模型的上海地区河网脆弱性探讨

程锐辉1,2, 范群杰3, 汪昱昆1,2, 刘垚燚1,2, 车越1,2   

  1. 1. 华东师范大学 生态与环境科学学院, 上海 200241;
    2. 华东师范大学 上海市城市化生态过程与生态恢复重点实验室, 上海 200241;
    3. 上海市长宁区河道管理所, 上海 200050
  • 收稿日期:2018-04-16 出版日期:2019-05-25 发布日期:2019-05-30
  • 通讯作者: 车越,男,教授,博士生导师,研究方向为环境管理.E-mail:yche@des.ecnu.edu.cn. E-mail:yche@des.ecnu.edu.cn
  • 作者简介:程锐辉,男,硕士研究生,研究方向为环境管理与规划.E-mail:1149203215@qq.com.
  • 基金资助:
    国家科技重大专项(2017ZX07207003-01)

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

摘要: 将脆弱性概念与河网系统结合,选取典型河网地区上海为研究区域,基于PSR模型构建了包含人为活动和河网环境13项指标的河网脆弱性评价方法,尝试探讨区域河网脆弱性特征及其驱动机制.研究结果显示:①城市化造成了上海不同区域间水系特征差别明显,浦东和青浦地区河网密布,中心城区河网稀疏;②上海河网总体脆弱性程度一般,极度和重度脆弱性区域集中在中心城区和郊区的主城区,面积共占全市面积的24.64%,中度和轻度脆弱区域面积分别占22.71%和31.93%;③河网脆弱性存在空间聚集现象,空间异质性明显,分布模式仅有"高高"和"低低"聚集;④4种土地利用方式与河网脆弱性变化都具有较显著的相关性,建设用地是导致河网脆弱性变化的主要驱动因素.

关键词: 河网脆弱性, PSR模型, AHP法, 上海市

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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