基于遥感的黄河三角洲蒸散的动态分析

基于遥感的黄河三角洲蒸散的动态分析

Evapotranspiration (ET) is an important parameter for water resource management.Compared to the traditional ET computation and measurement methods, the ET computation method based on remote sensing has the advantages of quickness, precision, raster mapping and regional scale. SEBAL, an ET computation model using remote sensing method is based on the surface energy balance equation which is a function of net radiance flux, soil heat flux, sensible heat flux and latent heat flux. The former three fluxes can be computed through the parameters retrieved from remote sensing image, then the latent heat flux can be obtained to provide energy for ET. Finally we can obtain the daily ET. In this study SEBAL was applied to compute ET in the Yellow River Delta of China where water resource faces a rigorous situation. Three Landsat TM images and meteorology data of 1999 were used for ET computation, and spatial and temporal change patterns of ET in the Yellow River Delta were analysed.

作 者： 潘志强 刘高焕 周成虎 PAN Zhiqiang LIU Gaohuan ZHOU Chenghu   作者单位： State Key Laboratory of Resource and Environment Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China  刊 名： 地理学报(英文版)  ISTIC SCI 英文刊名： JOURNAL OF GEOGRAPHICAL SCIENCES  年，卷(期)： 2003 13(4)  分类号： P343.1 TP79  关键词： evapotranspiration   remote sensing   Yellow River Delta  

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