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利用SCS-CN方法估算流域可收集雨水资源量
引用本文:王红雷,王秀茹,王 希.利用SCS-CN方法估算流域可收集雨水资源量[J].农业工程学报,2012,28(12):86-91.
作者姓名:王红雷  王秀茹  王 希
作者单位:北京林业大学水土保持学院教育部水土保持与荒漠化防治重点实验室,北京,100083
基金项目:北京市门头沟区流域治理专项资金项目(YSLY2011016)
摘    要:流域可收集雨水资源的定量研究对于雨水资源开发利用及其工程规划和建设具有十分重要的意义。该文以北京市门头沟区小流域为研究对象,采用遥感和地理信息系统技术,对流域下垫面特征有关的空间和属性数据进行提取和分析;在此基础上,结合不同水平年降雨资料,运用美国农业部水土保持局(Soil Conservation Service)开发的径流曲线模型(Soil Conservation Service curve number method,SCS-CN),得出不同下垫面特征的径流系数,结合地理信息系统技术生成径流潜力空间分布图。计算了平水年(P=50%)、丰水年(P=25%)、枯水年(P=75%)可收集雨水资源量分别为1.2×107,2.2×107,0.8×107m3;为小流域综合治理和雨水集蓄利用工程的规划与设计提供科学依据。

关 键 词:遥感  地理信息系统  雨水  SCS-CN  径流潜力
收稿时间:2011/11/25 0:00:00
修稿时间:2012/5/15 0:00:00

SCS-CN-based approach for estimating collectable rainwater in waterrshed-scale
Wang Honglei,Wang Xiuru and Wang Xi.SCS-CN-based approach for estimating collectable rainwater in waterrshed-scale[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(12):86-91.
Authors:Wang Honglei  Wang Xiuru and Wang Xi
Institution:uru※, Wang Xi (Key Laboratory of Soil and Water Conservation and Desertification Combating Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China)
Abstract:Research on collectable rainwater is of vital significance for the utilization of rainfall resources and construction of relevant projects. By taking the watershed in Men Tougou district as the research object, this study adopted Remote Sensing and Geographic Information System techniques to extract and analyze the spatial and attribute data of underlying surface. Based on the above data and rainfall of different hydrological years, SCS-CN model was used to compute the runoff coefficient, and GIS was utilized as a tool to analyze spatial distribution. The collectable rainwater resource of the Watershed under 3 kinds of hydro logical frequency years were then calculated with normal year (p=50%) 1.2×107 m3, wet year (p=25%) 2.2×107 m3and dry year (p=75%) 0.8×107 m3. This study provides scientific references for watershed comprehensive management and design of rainwater accumulation and utilization project.
Keywords:remote sensing  geographic information systems  rain  SCS-CN  runoff potential
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