长江流域资源与环境 >> 2012, Vol. 21 >> Issue (10): 1167-.

• 区域可持续发展 •    下一篇

太湖流域城市化发展下水系结构与河网连通变化分析——以苏州市中心区为例

邵玉龙| 许有鹏| 马爽爽   

  1. (南京大学地理与海洋科学学院| 江苏 南京 210093)
  • 出版日期:2012-10-20

CHANGE OF RIVER STRUCTURE AND STREAM NETWORK CONNECTIVITY IN THE TAIHU LAKE BASIN UNDER THE URBANIZATION DEVELOPMENT——A CASE STUDY IN URBAN SUZHOU

SHAO Yulong| XU Youpeng| MA Shuangshuang   

  1. (School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093,China
  • Online:2012-10-20

摘要:

太湖流域是我国城市化高度发达地区,城市化的发展有力地促进了区域经济的增长,但同时对原有河流水系造成了较大冲击,从而对生态环境造成了很大影响。苏州市是太湖流域城市化发展最为典型的城市之一,近几十年来城市化的快速发展导致区域河网萎缩,水系连通受阻。为此运用图论和GIS的方法探讨了水系结构与河流连通变化。研究表明:(1)近50 a来,苏州市中心区河流总长减少了约84 km,河网密度下降了约197%;(2)研究区二、三级河流持续减少,一级河流不断增加,呈明显的主干化趋势;(3)河流结点数和河链数均呈下降趋势,且1980s到2009年的变化幅度要比1960s到1980s的变化幅度大;(4)水系连通度由1960s的4215下降到1980s的4017,到2009年下降为3361,呈明显的减小趋势

Abstract:

The Taihu Lake Basin is highly developed area in urbanization of China.The development of urbanization boost regional economy effectively,which has inflicted a rather big impact on the original river water,and ecological environment as well.Suzhou is one of the most typical of urbanization development cities in the Taihu Lake Basin.In last few decades,the rapid development of urbanization led to the atrophy of regional stream network,and hydrographic net blocked as well.To analyze the water structure and changes in river connection,graph and GIS method have been used.The study shows that:(1)in the recent 50 years,the length of the streams of the study area reduced about 84 km,and the drainage density decreased about 197%;(2)the jurisdiction of two,three stream continued to decrease,while the jurisdiction of one stream grew constantly,which became a predominant role in the urban area;(3)stream nodes and links showed a downward trend,and the variance from 1980s to 2009 was much greater than that from 1960s to 1980s;(4)stream connectivity in 1960s was 4215 down to 4017 in 1980s, by 2009 it dropped to 3361,showing a clear decreasing trend

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