三种广义互补蒸发估算公式在华北平原两熟制农田的验证
Verification of three generalized complementary evaporation function in double cropping farmland in North China Plain
投稿时间:2022-01-18  修订日期:2022-05-18
DOI:
中文关键词:  蒸发  互补原理  华北平原  两熟制农田  动态标度
英文关键词:Evaporation  Complementary principle  the North China Plain  Double cropping farmland  Dynamic scale.
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位邮编
赵玉杰 中国水利水电科学研究院 100089
韩松俊 中国水利水电科学研究院 100038
张宝忠 中国水利水电科学研究院 
张晓龙 中国科学院遗传与发育生物学研究所农业资源研究中心/中国科学院农业水资源重点实验室/河北省节水农业重点实验室 
赵风华 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室 
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中文摘要:
      华北平原冬小麦-夏玉米一年两熟制农田蒸发量的估算和分析对灌溉管理和区域气候变化的研究都具有重要的意义,基于广义互补原理的蒸发估算方法的适用性需要探讨。本文利用华北平原四个冬小麦-夏玉米两熟制农田通量站点数据,验证Brutsaert(2015)的广义互补多项式公式及Crago(2016)和Szilagyi(2017)的基于动态标度的线性和多项式公式的适用性。采用Penman初始风速函数时,设定=1.26三个公式都能较好地模拟实际蒸发量,其中Brutsaert的基本式表现最好。标度后的线性公式模拟效果优于标度后的多项式公式,且采用基于Monin–Obukhov相似理论的风速函数时,标度后的线性公式估算效果优于Brutsaert的基本式。公式中的参数α在小麦季、玉米季和间作期分别率定能提高公式的模拟效果,缩小不同公式模拟效果之间的差距。
英文摘要:
      The applicability of evaporation estimation method based on the generalized complementarity principle is unclear in double cropping farmland in the North China Plain. In this paper, the Brutsaert (2015) "s generalized complementary polynomial equation, the scaled linear equation by Crago (2016) and the scaled polynomial equation by Szilagyi (2017) are verified using the data of four flux sites over winter wheat-summer maize double cropping farmland in North China Plain. When Penman (1948)’s original wind speed function is used, all the three equations perform well for evaporation estimation with the default parameter =1.26, and Brutsaert"s basic formula performs the best. The scaled linear equation performs better than the scaled polynomial equation, and even performs better than Brutsart"s basic formula when the wind speed function based on the Monin-Obukhov similarity theory is used. The performances for evaporation estimation can be substantially improved by calibrating the parameter in the wheat season, maize season and inter-cropping period respectively, and the difference among the three equations can be reduced.
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