CAJ | 학술논문

半湿润流域蓄满产流与超渗产流兼有，如何区分两种不同性质的产流过程一直是水文预报的难题。基于主导性水文过程的概念，结合遥感技术与地理信息技术，采用水文学界应用广泛的CN值和地形指数指标，划分蓄满产流主导区与超渗产流主导区，提出了蓄满超渗空间组合模型。以东湾流域为例，验证了蓄满产流模型、超渗产流模型及蓄满超渗空间组合模型的模拟效果。结果表明：单一产流模型参数失真，蓄满超渗空间组合模型参数接近实际；蓄满产流与超渗产流主导区划分越精确，参数越合乎实际；蓄满超渗空间组合模型精度较高，验证期结果稳定。
반습윤류역축만산류여초삼산류겸유，여하구분량충불동성질적산류과정일직시수문예보적난제。기우주도성수문과정적개념，결합요감기술여지리신식기술，채용수문학계응용엄범적CN치화지형지수지표，화분축만산류주도구여초삼산류주도구，제출료축만초삼공간조합모형。이동만류역위례，험증료축만산류모형、초삼산류모형급축만초삼공간조합모형적모의효과。결과표명：단일산류모형삼수실진，축만초삼공간조합모형삼수접근실제；축만산류여초삼산류주도구화분월정학，삼수월합호실제；축만초삼공간조합모형정도교고，험증기결과은정。
There exist two types of runoff producing mechanisms in semi-humid areas:saturation-excess runoff and infiltration-excess runoff. It has always been a difficult problem for hydrological forecasting to distinguish the two types of runoff processes. Based on the concept of dominant runoff processes,combined with GIS and RS technologies,this paper proposed the spatial combination model of infiltration-excess and saturation-excess runoff (SCM)to solve this problem. The SCM adopted the CN value and topographic index,both of which were widely used in hydrological researches,to divide the semi-humid watershed into infiltration-excess dominated areas and saturation-excess dominated areas. Dongwan watershed was taken as an example to test the performances of infiltration excess model,saturation excess model and SCM. The result of parameter optimization shows that the parameter value of single runoff models deviate from factual conditions,while that of SCM is close to. The more accurate the division of infiltration-excess and saturation-excess dominated areas,the more realistic the SCM parameter values are. The simulation result shows that the performance of SCM is improved in both calibration and validation periods. In addition, compared to single runoff models in validation period,the performance of SCM is more stable.