|
|
|
| Application of SCS model on simulation of the slope-runoff process in dry-hot valley |
| Guo Xiaojun1,2,3,Wang Daojie1,2,Zhuang Jianqi1,2,3 |
| 1.Institute of Mountain Hazards and Environment,CAS,610041,Chengdu;2.Key Laboratory of Mountain Hazards and Land Surface Progress,CAS,610041,Chengdu;3.Graduate Uniersity of Chinese Academy of Sciences,100049,Beijing: China |
|
|
|
|
Abstract To study the rainfall-runoff mechanism in debris flow valley in dry-hot area,the experiments were carried out on red-yellow soil,which is the main type in dry-hot valley in northern Yunnan province.This paper identified the soil hydrological types of each runoff plot by outdoor infiltration experiment,classified the AMC(Antecedent Moisture Class) by antecedent impaction precipitation in the last five days instead of total precipitation,calculated the volume of surface runoff during 5 rainfalls in 2006 on 5 different kinds of land use types by SCS(Soil Conservation Service) model.The result is acceptable through calibrating Ia and CN,The average error during each rainfall is respecrtively 4.32%,4.32%,9.73%,7.28%,6.24%.The result shows that the feasibility of the application of SCS model to estimate the volume of rainfall runoff in sloping field in dry-hot valley,and also provides a reference to study the rainfall-runoff model in this district.
|
|
Received: 29 January 2010
|
|
|
|
|
|
|
