摘要
本文在Penman Monteith公式的基础上 ,推导出能解析计算冠层蒸腾和土壤蒸发的双源模型 ,使之能广泛用于农田蒸腾和蒸发的计算 .采用玉米田波文比—能量平衡 (BREB)观测资料对模型进行检验 ,模拟的蒸散量与BREB的结果相当一致 .模型主要参数对蒸散的敏感性分析表明 ,这些参数变化± 2 0 %时 ,蒸散的响应小于± 7% .
An improved dual\|source model is proposed by which the canopy transpiration and underneath soil evaporation can be estimated analytically. The model is testified by surface energy balance data collected in summer maize field. The output evapotranspiration is in good agreement with that calculated by Bowen ratio\|energy balance method. Sensitivities of some main parameters for evapotranspiration show that the variation of enapotranspiration is less than 7% when parameters vary in the range of±20%.
出处
《水利学报》
EI
CSCD
北大核心
2000年第5期6-11,共6页
Journal of Hydraulic Engineering
基金
国家自然科学基金项目资助! ( 4 97710 1949890 3 3 0 )
关键词
双源蒸散模型
土壤蒸发
冠层蒸腾
dual\|source evapotranspiration model
canopy transpiration
soil evaporation
