徐晨璇,贾忠华,罗纨,许青

• 1:扬州大学水利科学与工程学院

摘要(Abstract)：

通过建设绿色基础设施(GI)推进海绵城市建设,可以有效缓解地表径流过剩压力,然而地块间土地利用差异使部分土地利用性能较差的地块单独建设GI时难度较大且成本较高。为寻求一种更具经济效益的途径,提出了一种功能区间的"海绵容量交易"方法,通过连通地块,确定交易尺度,将多余的雨水径流从渗透饱和的功能区转移到不饱和的功能区,使差异性功能区之间进行协调运作,以此达到海绵城市的建设优化。利用GIS划定不同空间尺度的交易区域进行对比,实例分析建设强度对容量交易的影响。结果表明:(1)对比单独建设GI,小规模功能区(5～6个)之间采用海绵容量交易方法就能有效削减雨水量,显著降低GI建设成本。(2)研究区海绵容量盈余与亏缺区大致呈间隔交错分布时,容量交易将部分盈余的功能区海绵量转移到亏损的功能区的效果越显著,并且随着交易尺度的增大,这种转移作用更加显著。

关键词(KeyWords)： 绿色基础设施;海绵容量交易;城市功能区;雨水削减;空间尺度;降水;海绵城市

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51979239);; 江苏省高校优势学科建设工程资助项目

作者(Author): 徐晨璇,贾忠华,罗纨,许青

DOI: 10.13928/j.cnki.wrahe.2021.06.001

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