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中文摘要：
在Budyko假设的基础上,充分考虑土壤蓄水量的影响,利用量纲分析和数学推导,构造出基于傅抱璞公式的Budyko假设模型的蒸散发计算公式,并且运用改进前后的模型模拟京杭大运河后营水文站流域蒸散发过程,拟合了模型中的参数。验证结果表明：改进后的Budyko水热耦合模型模拟精度更高,可以用来预测实际蒸散发值;该模型具有一定的适用性,值得推广。
英文摘要：
According to the Budyko framework and fully considering the impact of soil water storage,an equation of evapotranspiration for the Budyko framework based on Fu＇s equation was established by means of dimensional analysis and mathematical derivation.The original and modified models were employed to simulate the evapotranspiration processes in the river basin at Houying hydrologic station of Beijing-Hangzhou Grand Canal.The model parameters are fitted.The resultsshow that the modified Budyko model of coupled water-energy has higher simulation precision and can be adopted to estimate the actual evapotranspiration.It is applicable and should be popularized.
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