论文部分内容阅读
潜在蒸散发是一个综合性气候因子,是流域水文循环模拟的主要输出量。针对现存潜在蒸散发量估算方法的适用性分析不够全面的问题,基于海河流域45个国家气象台站1960~2010年日气象数据序列,以Penman-Monteith方法估算量和蒸发皿蒸发量为基准,从潜在蒸散发估算量与蒸发皿蒸发量的相关性、年均值空间变化特征、年内四季空间变化特征和年际变化趋势四个方面,探讨了六种基于能量的潜在蒸散发估算方法的适用性。结果表明,Penman-Monteith方法在整个流域具有较强的适用性;六种基于能量方法中,Doorenbos-Pruitt方法、Makkink方法、Hargreaves方法估算效果较好。
Potential evapotranspiration is a comprehensive climatic factor and is the main output of hydrological cycle simulation in the basin. Based on the meteorological data series of meteorological stations in 45 countries in the Haihe River basin from 1960 to 2010, the Penman-Monteith estimate and evapotranspiration were taken as references to analyze the applicability of the existing estimation methods of evapotranspiration. Potential Evapotranspiration Estimation and Pan Evaporation Volume, Annual Mean Spatial Variability, Four Seasons Spatial Variability, and Interannual Variability Trends in Four Seasons, the applicability of six potential energy evapotranspiration estimates was discussed. The results show that the Penman-Monteith method has a good applicability in the whole basin. The Doorenbos-Pruitt method, the Makkink method and the Hargreaves method are better than others in the six energy-based methods.