人民珠江2024，Vol.45Issue(4)：40-51,106,13.DOI:10.3969/j.issn.1001-9235.2024.04.006
基于多种方法的汉江和渭河流域实际蒸发量对比研究
Actual Evapotranspiration Comparison in Hanjiang River and Weihe River Basin Based on Multiple Methods
摘要
Abstract
Accurate actual evapotranspiration assessment in a basin is important for revealing climate change trends and serving regional water resources management.The Hanjiang River and Weihe River are typical representatives of semi-humid and semi-arid watersheds on the north and south sides of the Qinling Mountains.This paper estimates and verifies the mean annual actual evapotranspiration of basins in the Hanjiang River and Weihe River basins by multiple methods including the water balance method,B2015 evapotranspiration complementary model,SWAT hydrological model,and evapotranspiration data products.The results show that the B2015 evapotranspiration complementary model is well applied to both study areas,and the calculated actual evapotranspiration error is less than 10％.The SWAT model performs well in the daily runoff simulation in both study areas,and the determination coefficient is larger than 0.63.The comparison results of multiple methods show that the annual actual evapotranspiration calculated by the water balance method and the SWAT model is closer to the actual value,and the calculated values of the B2015 evapotranspiration complementary model in Hanjiang River and Weihe River are 3.79％and 2.46％smaller than the actual values respectively.The actual evapotranspiration from the TEDAC and GLDAS evapotranspiration products is 31.08％and 36.54％larger in Hanjiang River and 13.72％and 5.06％larger in Weihe River,and the evaluation performance of the two products is better in the Weihe River than that in Hanjiang River.Additionally,it is still difficult to calculate the accurate actual evapotranspiration by current datasets and methods in specific basins.关键词
实际蒸发量/水文模型/互补关系/蒸发产品Key words
actual evapotranspiration/hydrological model/complementary relationship/evapotranspiration data product分类
建筑与水利引用本文复制引用
李彤彤,刘登峰,明广辉,韩松俊,孟宪萌,黄强..基于多种方法的汉江和渭河流域实际蒸发量对比研究[J].人民珠江,2024,45(4):40-51,106,13.基金项目
国家自然科学基金(52279025、52109031、42071335) （52279025、52109031、42071335）
