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为定量分析P-M公式和双源蒸散发模型在淮河流域上游地区的适用性及计算精度,将双源蒸散发模型及P-M公式计算得到的蒸散发量与流域内息县水文站实测蒸发皿蒸发量的相关性进行对比分析,并定量分析不同蒸散发输入对水文模拟精度的影响。研究结果表明,双源蒸散发模型计算值与实测值的相关性及其水文模拟精度更高,更适于淮河流域上游地区蒸散发计算。研究成果可为淮河流域上游无资料地区的水文模拟和蒸散发计算提供参考。
In order to quantitatively analyze the applicability and accuracy of the PM equation and the dual-source evapotranspiration model in the upper reaches of the Huaihe River basin, the evapotranspiration calculated by the dual-source evapotranspiration model and the PM formula is compared with the measured evapotranspiration Correlation analysis, and quantitative analysis of the impact of different evapotranspiration on hydrological simulation accuracy. The results show that the correlation between the calculated and measured data and the precision of hydrological simulation are more suitable for the calculation of evapotranspiration in the upper reaches of the Huaihe River basin. The research results can provide reference for hydrological simulation and evapotranspiration calculation in the upper reaches of the Huaihe River Basin.