| Cite this article: | 李志梅.径流曲线模型（SCS-CN）在延庆典型下垫面中的优化及应用[J].灌溉排水学报,0,():-. |
| Li Zhimei.径流曲线模型（SCS-CN）在延庆典型下垫面中的优化及应用[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 555Times Download 0Times |
|
|
|
| DOI： |
|
| Optimization and application of Runoff Curve Model in Yanqing typical underlying surface |
|
Li Zhimei
|
|
Water and soil conservation management station of Yanqing District Water Bureau of Beijing
|
| Abstract: |
| 【Objective】Built SCS-CNP model by optimizing CN value，and the applicability of SCS-CNP model under typical underlying surface conditions in Yanqing area will be discussed, which can provide scientific basis and theoretical reference for regional water resources management.【Method】 In this study, seven typical underlying surfaces in Yanqing District were taken as the research objects. The long-term observed rainfall and runoff data, linear regression were used to built improved SCS-CN model under the conditions of different underlying surfaces and explore the adaptability of the improved CN value model (SCS-CNP) in different underlying surfaces.【Result】1)Based on the standard SCS-CN model, the observed value of runoff under seven different underlying surface conditions (T1-T7 treatment) are generally lower than the simulated values; 2) The accuracy of the improved SCS-CNP model in different underlying surfaces is better than that of the standard SCS model; 3) The simulation accuracy of the improved SCS-CNP model under the condition of fallow land is highest which followed by accuracy used in forest land and cultivated land conditions.【Conclusion】The standard SCS-CN model is not suitable for runoff simulation under typical underlying surface conditions in Yanqing District. The improved SCS-CNP model has good adaptability for runoff simulation under typical underlying surface conditions in Yanqing District. |
| Key words: SCS-CN model; runoff calculation; runoff curve; model improvement; Yanqing District |
|
|
|
|
|
|
