SCS模型在不同土地类型地表产流计算中的应用——以余姚地区为例  

Application of SCS model on computing the surface runoff of different land use types-A case study on Yuyao,Zhejiang Province

作　　者：吴志宜 俞志强[2] 朱雪坚[2] 李东阳[2] 

机构地区：[1]浙江大学地球科学学院,浙江杭州310027 [2]浙江省地理信息中心,浙江杭州310012

出　　处：《浙江大学学报（理学版）》2016年第2期226-230,共5页Journal of Zhejiang University（Science Edition）

基　　金：国家自然科学基金资助项目(41101356;41001227);浙江省科技计划项目(2014C33049)

摘　　要：产流量计算是进行城市防洪及水土保持效益评估的关键.结合余姚地区土壤资料及典型性降雨事件的观测数据,对降雨量、降雨初损值、最大潜在入渗量、产流量四者的关系进行了深入分析,基于土地利用功能建立了适用于平原水网地区的SCS（Soil Conservation Service）扩展模型,并在余姚地区开展了降雨地表产流验证.实验结果表明,基于SCS扩展模型的径流量计算值和实测值之间的绝对误差在0.14～1.36mm,二者具有很好的一致性.Runoff calculation is a key step to control the urban flood and to evaluate the efficiency of soil and water conservation.This study combined the data of soil and typical rainfall events in Yuyao area,and conducted an in-depth analysis on the relationship among precipitation,early loss of rainfall,maximum potential infiltration and runoff.Furthermore,SCS extending model applicable to plain river-net regions based on land use functions was established,and was validated in Yuyao rainfall-runoff.Results showed that the absolute error between the calculated and observed runoffs based on SCS extending mode was in the range from 0.14 to 1.36 mm,indicating good consistency.

关 键 词：地表产流 SCS模型 土地利用类型 地表特征 平原水网区 

分 类 号：S157[农业科学—土壤学]