摘要
[目的]分析城市绿地、汇水区与积水点的关系,需优化绿地与汇水区的关系,以期能够缓解城市雨水径流问题。[方法]融合"海绵城市"与国内外最新的生态雨洪管理理念,以郑州市为例,采用ArcGIS10.0软件将其划分为93个汇水区,通过水量平衡法理论计算需优化绿地面积的参数。[结果]在现状绿地与汇水区面积比值不同和单次降雨分别为50,100,200mm的情况下,得出需优化绿地与汇水区面积的不同比值,并建立相应的回归方程,且得出在绿地率为30%左右时绿地调蓄效果较好。[结论]城市绿地可以从增加城市绿地规模、合理布局城市绿地以及具体实施途径方面进行优化。
[Object]To analyze the relationships among urban green space,catchment area and water point in order to relieve urban storm runoff.[Methods]Based on the latest concept of＂sponge city＂and ecological stormwater management,we took Zhengzhou City as a case study.The study area was divided into 93 catchment areas.By using water balance method,parameters of green space were calculated.[Results]We summarized the regression relationships between the existing green space and the catchment area,and obtained different green space/water catchment area ratios under different rainfall conditions（50,100 and 200mm）.The result showed that the regulation and storage effect was the best when the green space ratio was 30%.[Conclusion]Urban green space can be optimized by increasing urban green space scale,reasonable layout and the concrete implementation ways.
出处
《水土保持通报》
CSCD
2016年第3期258-264,共7页
Bulletin of Soil and Water Conservation
基金
河南省科技攻关项目"基于3S技术的区域非点源污染定量评估研究"(112102110027)
关键词
城市绿地
“海绵城市”
汇水面
积水点
urban green space
＂sponge city＂
catchment area
water point
