中国地理科学(英文版) ›› 2008, Vol. 18 ›› Issue (3): 235-241.doi: 10.1007/s11769-008-0235-x

• 论文 • 上一篇    下一篇

Application of SCS Model in Estimation of Runoff from Small Watershed in Loess Plateau of China

LIU Xianzhao, LI Jiazhu   

  1. College of Geography and Planning, Ludong University, Yantai 264025, China
  • 收稿日期:2008-03-04 修回日期:2007-10-08 出版日期:2008-09-20 发布日期:2011-12-14
  • 通讯作者: LIU Xianzhao. E-mail: xianzhaoliu@sina.com E-mail:xianzhaoliu@sina.com
  • 基金资助:

    Under the auspices of National Natural Science Foundation of China (No. 40101005)

Application of SCS Model in Estimation of Runoff from Small Watershed in Loess Plateau of China

LIU Xianzhao, LI Jiazhu   

  1. College of Geography and Planning, Ludong University, Yantai 264025, China
  • Received:2008-03-04 Revised:2007-10-08 Online:2008-09-20 Published:2011-12-14

摘要:

Soil Conservation Service (SCS) model, developed by U. S. Soil Conservation Service in 1972, has been widely applied in the estimation of runoff from an small watershed. In this paper, based on the remote sensing geo-information data of land use and soil classification all obtained from Landsat images in 1996 and 1997 and con-ventional data of hydrology and meteorology, the SCS model was investigated for simulating the surface runoff for single rainstorm in Wangdonggou watershed, a typical small watershed in the Loess Plateau, located in Changwu County of Shaanxi Province of China. Wangdonggou watershed was compartmentalized into 28 sub-units according to natural draining division,and the table of curve number (CN) values fitting for Wangdonggou watershed was also presented. During the flood period from 1996 to 1997, the hydrograph of calculated runoff process using the SCS model and the hydrograph of observed runoff process coincided very well in height as well as shape, and the model was of high precision above 75%. It is indicated that the SCS model is legitimate and can be successfully used to simulate the runoff generation and the runoff process of typical small watershed based on the remote sensing geo-information in the Loess Plateau.

关键词: runoff simulation, small watershed, SCS model, Loess Plateau

Abstract:

Soil Conservation Service (SCS) model, developed by U. S. Soil Conservation Service in 1972, has been widely applied in the estimation of runoff from an small watershed. In this paper, based on the remote sensing geo-information data of land use and soil classification all obtained from Landsat images in 1996 and 1997 and con-ventional data of hydrology and meteorology, the SCS model was investigated for simulating the surface runoff for single rainstorm in Wangdonggou watershed, a typical small watershed in the Loess Plateau, located in Changwu County of Shaanxi Province of China. Wangdonggou watershed was compartmentalized into 28 sub-units according to natural draining division,and the table of curve number (CN) values fitting for Wangdonggou watershed was also presented. During the flood period from 1996 to 1997, the hydrograph of calculated runoff process using the SCS model and the hydrograph of observed runoff process coincided very well in height as well as shape, and the model was of high precision above 75%. It is indicated that the SCS model is legitimate and can be successfully used to simulate the runoff generation and the runoff process of typical small watershed based on the remote sensing geo-information in the Loess Plateau.

Key words: runoff simulation, small watershed, SCS model, Loess Plateau