自然资源学报

自然资源学报 ›› 2003, Vol. 18 ›› Issue (2): 161-167.doi: 10.11849/zrzyxb.2003.02.006

• “黄河流域水循环动力机制与模拟”专题研究 • 上一篇    下一篇

蒸散量测定与估算方法的对比研究

刘绍民1, 孙中平1, 李小文1, 刘昌明2,3   

  1. 1. 北京师范大学遥感与GIS研究中心, 资源与环境科学系, 北京 100875;
    2. 北京师范大学环境科学研究所, 北京 100875;
    3. 中国科学院地理科学与资源研究所, 北京 100101
  • 收稿日期:2002-10-20 修回日期:2002-12-10 出版日期:2003-04-25 发布日期:2003-04-25
  • 作者简介:刘绍民(1967～),男,浙江绍兴人,副教授,博士,主要从事陆面过程方面的研究.E-mail:lsm914@sina.com
  • 基金资助:

    国家自然科学基金项目(40201038);国家重点基础研究规划项目(G20000779)和(G1999043601).

A comparative study on models for estimating evapotranspiration

LIU Shao-min1, SUN Zhong-ping1, LI Xiao-wen1, LIU Chang-ming2,3   

  1. 1. Research Center for Remote Sensing and GIS, Department of Geography, Beijing Normal University, Beijing 100875, China;
    2. Institute of Environmental Sciences, Beijing Normal University, Beijing 100875, China;
    3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2002-10-20 Revised:2002-12-10 Online:2003-04-25 Published:2003-04-25

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被引次数

147 | 48

摘要： 以涡度相关法的实测资料为标准,对波文比—能量平衡法、空气动力学法、Penman-Monteith模型、Shuttleworth-Wallace模型进行对比研究,并分析了各种方法的精度和灵敏度。结果表明:Penman-Monteith模型和波文比—能量平衡法的精度最高,Shuttleworth-Wallace模型和空气动力学法的精度较差。Penman-Monteith模型的稳定性较好,波文比—能量平衡法受Δe和ΔT观测精度的影响大,风温湿观测高度以及下垫面是否均一对空气动力学法影响较大,Shuttleworth-Wallace模型对各类阻抗较为敏感。

关键词: 蒸散量, 测定与估算, 对比研究, 精度, 灵敏度

Abstract: Based on the observational data of eddy correlation method,we validate some methods for estimating latent heat flux,which include Bowen-ratio method,aerodynamics method,Penman-Monteith model and Shuttleworth-Wallace model.Analysis of the performance and sensitivity of these models shows that Penman -Monteith model and Bowen -ratio method are the best in performance,while Shuttleworth-Wallace model and aerodynamics method are the worst.Penman-Monteith model is not sensitive to the uncertainty in these model parameters.The measured precision ofΔe andΔT affect the performance of Bowen -ratio method greatly,while the observation height of wind,temperature,humidity and heterogeneous surfaces affect the performance of aerodynamics method greatly.Shuttleworth-Wallace model is sensitive to surface resistances.

Key words: evapotranspiration, measurement and estimation, comparative study, performance, sensitivity

中图分类号: 

  • P426.2