Dynamic analysis of evapotranspiration based on remote sensing in Yellow River Delta

编号 zgly0000311984

文献类型 期刊论文

文献题名 Dynamic analysis of evapotranspiration based on remote sensing in Yellow River Delta

作者 PANZhiqiang  LIUGaohuan  ZHOUChenghu 

作者单位 StateKeyLaboratoryofResourceandEnvironmentInformationSystem  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  Beijing100101  China 

母体文献 Journal of Geographical Sciences;地理学报: 英文版 

年卷期 2003,13(4)

页码 408-415

年份 2003 

分类号 P343.1  TP79 

关键词 土壤水分蒸发蒸腾损失总量  动态分析  遥感  黄河三角洲 

文摘内容 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。