基于水文循环过程的小流域蒸散发量模拟方法评估  

Evaluation of Evapotranspiration Simulation Method based on Hydrological Cycle Process in Small Watershed

作　　者：师晟国 SHI Shengguo(Xi'an Hydrology and Water Resources Exploration Center,Xi'an 710100,China)

机构地区：[1]西安水文水资源勘测中心,陕西西安710100

出　　处：《河南水利与南水北调》2023年第4期10-11,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：蒸发蒸腾(ET)在农业灌溉和水资源管理中起着重要作用。使用了5个基于辐射的模型、3个基于温度的模型和1个基于空气动力学的模型,利用特定流域周围6个气象和水文站的长期数据,对所选模型进行月度比较。规模和生长期规模进行比较。结果表明,在研究区,基于辐射的方法优于基于温度的方法。从生长季节ET的累积结果来看,Jensen-Heise方法在温暖季节和秋冬季生长季节显示出最好的结果。最佳替代方法估计在某些地区不是很可靠,因此在使用模型之前应考虑空间和时间变化。Evapotranspiration(ET)plays an important role in agricultural irrigation and water resources management.Five radiation based models,three temperature based models,and one aerodynamics based model were used to compare the selected models on a monthly basis using long-term data from six meteorological and hydrological stations around a specific watershed Scale and growth period scale were compared.The results show that the radiation-based method is better than the temperature-based method in the study area.From the cumulative results of ET in growing season,Jensen-Heise method shows the best results in warm season and autumn and winter growing season.The best-alternative estimates are not very reliable in some areas,so the spatial and temporal variations should be taken into account before using the model.

关 键 词：小流域 水文循环 蒸散发量 

分 类 号：TV211.2[水利工程—水文学及水资源]