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作 者 ：郑侃^1,2;金昌杰¹;王安志¹;关德新¹;裴铁璠¹

期 刊 ：应用生态学报 2008年 19卷 05期 页码：936-941

摘 要 ：采用饱和入渗理论、Saint-Venant方程和Richards方程构建了以有限差分法求解的
坡面流与壤中流耦合模型，并模拟了不同坡度和不同雨强下的坡面产汇流室内实验.结果表
明：该模型模拟的坡面流和壤中流过程与实测过程基本一致，峰现时间、径流历时、峰值流
量、出流总量模拟值与实测值的相对误差均较小，基本小于10%.模型的模拟精度较高，实
用性较强，为深入研究壤中流机制和改进流域降雨-径流模型提供了理论依据.

Abstract:

A coupled slope surface-subsurface flow model which can be solved by finite difference method was constructed with saturated infiltration theory, SaintVenant equation, and Richards-equation, and a series of slope runoff generation experiments under conditions of different slope grades and rain intensities were conducted in laboratory. The results showed that the simulated and observed processes of surface-subsurface flow accorded well, with the relative errors of peak time, flow duration, peak flow, and gross flow being mostly less than 10%. This precise and practicable model could be used in further studying the mechanisms of subsurface flow and in providing theoretical basis for improving rainfall-runoff watershed models.

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