IMPACT OF URBANIZATION ON STRUCTURE AND FUNCTION OF RIVER SYSTEM—Case Study of Shanghai,China

作     者：Philip JAMES 

作者机构：Research Institute for the Built and Human Environment School of Environment and Life Sciences University of Salford Greater Manchester M5 4WT UK 

出 版 物：《Chinese Geographical Science》 (中国地理科学(英文版))

年 卷 期：2006年第16卷第2期

页      面：102-108页

核心收录：

学科分类：083305[工学-城乡生态环境与基础设施规划] 08[工学] 081403[工学-市政工程] 0814[工学-土木工程] 0833[工学-城乡规划学] 

基　　金：Under the auspices of the National Natural Science Foundation of China (No. 40471019) and Shanghai Shu GuangScholar Scheme (No. 03SG22) 

主　　题：river system stream classification Horton law urbanization Shanghai 

摘      要：Urbanization can affect the physical process of river growth, modify stream structure and further influence the functions of river system. Shanghai is one of the largest cities in the world, which is located in Changjiang (Yangtze) River Delta in China. Since the 1970s, the whole river system in Shanghai has been planned and managed by the Shanghai Water Authority. The primary management objectives in the last 30 years have been to enhance irrigation and flood-control. By using Horton-Strahler classification and Horton laws as a reference, a novel method of stream classification, in conjunction with the traditional and specially designed indicators, was applied to understanding the structure and functions of the river system in Shanghai. Correlation analysis was used to identify the interrelations among indicators. It was found that the impact of urbanization on the river system was significant although natural laws and physical characteristics marked a super-developed river system. There was an obvious correlation between the degree of urbanization and the abnormal values of some indicators. Urbanization impacts on river system such as branches engineered out, riverbank concreting and low diversity of river style were widely observed. Each indicator had distinct sensibility to urbanization so they could be used to describe different characteristics of urban river system. The function indicators were significantly related to structure indicators. Stream structure, described by fractal dimension and complexity of river system, was as important as water area ratio for maintaining river’s multi-function.