摘要
为体现河网水系保护空间上的差异性,可以根据河网水系特征,在空间上实行分区保护。以上海市崇明县为研究对象,引入最小累积阻力模型概念,分析了河网水系保护在城市化过程中的阻力面特征。研究结果表明:崇明县城镇用地扩张的阻力主要以城区为核心向外扩散,距离越远阻力越大,阻力最大的区域为崇明东滩;生态用地扩张的阻力主要表现为西部区域阻力较小,东部区域阻力增大。将河网水系保护区域划分为5个区,即河网水系特殊保育区、河网水系重点保护区、河网水系风貌保留区、河网水系生态建设区和河网水系景观恢复区,并提出了河网水系分区保护对策,为平原河网水系区域的生态保护提供了参考依据。
To reflect the spatial diversity of river network protection, partition protection measure can be adopted according to the characteristics of river water system. Taking Chongming Island as a research object, the minimum cumulative model is introduced and the resistance characteristics of river water system protection in the process of urbanization are analyzed. The results show that the resistance of urban land expansion spreads to the surrounding from the county town of Chongming Island, which is characterized by the farther the distance, the greater the resistance, and the biggest resistance area is the east beach of Chongming Island; the ecological land expansion resistance is smaller in the west and increase in the east. The whole river network area can be subdivided into 5 sub - zones, namely, river network special conservation zone, river network key protection zone, river network landscape reservation zone, river network ecological construction zone and river network landscape restoration zone. The protection measures for each sub - zone are put forward to provide reference for regional ecological protection of plain network area.
出处
《人民长江》
北大核心
2013年第20期76-79,88,共5页
Yangtze River
关键词
河网
最小累积阻力模型
水系分区
环境保护
崇明岛
river network
minimum cumulative model
zoning of water network
environmental protection
Chongming Island
