Quantification of Benefits from Storm-runoff Reduction by Urban Forest--A Case Study of the Second Ring Road of Xi'an City

LIAN Jun-ying; LIU Kang; WANG Jun; LIANG Yi; ZHANG Jing; LI Xi-xiang

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Quantification of Benefits from Storm-runoff Reduction by Urban Forest--A Case Study of the Second Ring Road of Xi'an City

- Quantification of Benefits from Storm-runoff Reduction by Urban Forest--A Case Study of the Second Ring Road of Xi'an City
- Bulletin of Soiland Water Conservation Vol. 27, Issue 6, Pages: 22-31(2008)
- 作者机构：
  
  西北大学环境科学系,陕西,西安,710127
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2008
- 稿件说明：
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LIAN Jun-ying, LIU Kang, WANG Jun, et al. Quantification of Benefits from Storm-runoff Reduction by Urban Forest--A Case Study of the Second Ring Road of Xi'an City[J]. Bulletin of Soiland Water Conservation, 2008, 27(6): 22-31.
DOI：

LIAN Jun-ying, LIU Kang, WANG Jun, et al. Quantification of Benefits from Storm-runoff Reduction by Urban Forest--A Case Study of the Second Ring Road of Xi'an City[J]. Bulletin of Soiland Water Conservation, 2008, 27(6): 22-31. DOI：

摘要

利用美国林业局的ArcViewGIS Citygreen 5.0模型中的"Stormwater Analysis"分析模块

以西安市2003年遥感影像图为基础

对二环内6个不同功能区(公园、道路、文化区、商业区、工业区、居住区)土地覆盖情况进行数字化

并结合西安市降雨统计资料和土壤水文特征

定量研究了西安市城市森林减少的暴雨径流效益。结果表明

以32 mm作为夏季一次24 h典型降雨事件的降雨量

城市森林减少暴雨径流的总量为150 682.06 m3。不同功能区的净截流量依次是居住区>道路>公园>文化区>工业区>商业区。不同功能区单位面积截流效益与森林覆盖率和硬铺装率有密切的联系

表现为公园>道路>文化区>居住区>工业区>商业区。

Abstract

By using the ArcViewGIS Citygreen 5.0 model

six different land cover categories in the second ring road of Xi'an City were digitized

data of precipitation and soil hydrologic characters were analyzed

and benefits from storm-runoff reduction by urban forest were quantified.It was found that the total benefit from storm-runoff reduction was 150 682.06 m3 for the typical 24 h storm events of 3.2 cm in summer.Landuse categories

in terms of the net discharge reduction

were in the descendant order of residential area

road

park

culture area

industrial area

and commercial area.The storm-runoff reduction benefit per hectare was mainly related to impervious surface and forest coverage

and landuse categories were in the descendant order of park

road

culture area

industrial area

residential area

and commercial area.

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