Spatial Feature Analysis of Evapotranspiration with Remote Sensing
The analysis of ET with remote sensing is the important part in the application of regional water management and saving water irrigation management. The spatial feature ET was affected by the geometric correction, the resolution, vegetation fraction and meteorological conditions. Combined with land use, vegetation fraction and surface temperature and SPOT data, Evapotranspiration (ET) data with remote sensing in Guantao was applied to discover the spatial feature of ET. The results show that: 1) ET with remote sensing would reflect appropriately spatial differences in a region scale, the average ET in water body and vegetation is larger than in urban area, rural area and bare soil. 2) The vegetation coverage condition has a high impact on ET, and there are positive relations between them, the larger the vegetation fraction, the higher ET would be. 3) The cultivation structure also reflects the spatial distribution of ET. ET varies with the types of crop and ET in two-quarter crop area is larger than one-quarter crop area.
Land Surface Evapotranspiration (ET) ETWatch Remote sensing Spatial feature
YAN Nana HU Minggang WU Bingfang
Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101,China Beijing Water Technology Center of Beijing Water Authority, Beijing 100073, China
国际会议
北京
英文
193-201
2008-12-08（万方平台首次上网日期，不代表论文的发表时间）