【摘要】 径流曲线数模型(SCS模型)计算径流准确方便,该模型只有一个综合参数即径流曲线数(CN),它与土地利用、坡度、土壤类型以及前期土壤湿度等因素有关。基于北京山区坡地径流场2007年—2013年的降雨径流观测数据,计算了山区不同土地利用、土壤水文组的CN值,结果表明,计算得到的CN值能真实反映北京山区的径流特征,可用于北京山区的径流估算。更多还原

【Abstract】 The Soil Conservation Service( SCS) model is accurate and convenient for runoff calculation. The model needs only one comprehensive parameter,the curve number( CN),which is related to land use,slope,soil type and antecedent soil moisture. Based on rainfall runoff observational data of slope runoff field in Beijing mountainous area from 2007 to 2013,the CN values were calculated under different land utilization and soil hydrological groups. The results showed that the calculated CN values could accurately reflect the runoff characteristics of Beijing mountainous area and be applied to runoff estimation in Beijing mountainous area.更多还原