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地理科学  2002 

北京地区坡面径流计算模型的比较研究

, PP. 604-609

Keywords: 北京山区,入渗,径流计算

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Abstract:

利用北京市西南山区房山蒲洼两个坡耕地小区30场降雨径流资料和密云石匣示范区休闲地试验小区13场降雨径流资料,对Chu修正的Mein-Larson-Green-Ampt(GAML)、Phillip、Horton和SCS径流曲线数法4种径流计算公式进行了对比。结果表明GAML和Phillip计算结果的模型确定性系数较高,Horton入渗曲线和SCS曲线数的计算结果模型确定性系数偏低。根据模型参数的易获得性,建议在北京山区,在有降雨过程资料时,使用Chu修正的GAML入渗曲线进行径流计算;若无降雨过程资料可用SCS径流曲线数进行径流计算。本研究结果可用于北京地区径流量预报和水土资源评价。

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