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    基于水生态系统服务效能机理的江南水网空间形态重构

    关键词:风景园林;人居环境学;生态系统服务;江南水网;空间形态;GIS模型

    Key words:landscape architecture; science of human settlements; ecosystem service; water system in the Yangtze River Delta; physical form; GIS-based modeling

    摘要:借助GIS数据分析模型,针对日益退化的江南水网,提出其空间形态的重构应当以高效的水生态系统服务为基础。基于人居环境三元论的思想,将人居环境背景中的水与人居环境建设中的空间形态进行互动分析,提炼出双棋盘及滨湖2种典型的江南水网传统空间形态模式,并阐述其在现代城市化消解过程中,径流调节、雨洪调节和水体自净三大与水相关的生态系统服务日渐式微。通过对十二大生态因子的研究,构建GIS水生态系统服务评价模型(GEEMoW),以上海临港新城为基地展开研究,阐述水生态系统服务效能与江南水网空间形态变化之间的机理,归纳出对江南水网进行重构的四大规划设计策略。

    Abstract:Based on a GIS modeling for evaluation, this paper argues that the restoration of degraded water system in the Yangtze River Delta relies on an effective provision of water-related ecosystem services. It proposes that there are two typical models of water system in the Yangtze River Delta, namely Double Grids Model and Lakeside Model, which are both degraded in the process of modernization and urbanization. As a result, three key water-related ecosystem services, which are regulating water flow, regulating floods and stormwater, and water self-purification, are also degraded or lost. This paper establishes a GIS-based Eco-service Evaluation Model of Water (GEEMoW) based on a study of twelve parameters. Lingang New City in Shanghai is studied as the case, through which the correlation between the effective provision of water-related ecosystem services and the physical form of water system in the Yangtze River Delta is clarified. Finally, four planning and design strategies that aim to restore the physical form of water in the Yangtze River Delta are proposed as a conclusion.

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