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Remote Sensing Technology and Application  2010, Vol. 25 Issue (2): 183-188    DOI: 10.11873/j.issn.1004-0323.2010.2.183
Retrieving Evapotranspiation of Loess Hilly-gully Region Using TSEB Parallel Model Based on Remote Sensing Image
PAN Jing-hu1,2,LIU Chun-yu1
1.College of Geographic and Environmental Science,Northwest Normal University,Lanzhou 730070,China;
2.College of Resource and Environmental Science,Lanzhou University,Lanzhou 730000,China
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Evapotranspiation retrievals in conditions of rugged terrain and arid/semiarid sparse vegetation are always the hotspot in estimation of regional evapotranspiration from remote sensing images.Concerning with the complex characteristics of the loess hilly-gully region,such as undulating topography,un-unique land use/covers and less vegetated land surface,etc,land surface characteristic parameters and flux was retrieved,and the instantaneous vegetation transpiration and soil evaporation was estimated with the TSEB parallel model by using the Landsat TM data for an experimental study site located on the conjuncture area of Shaanxi and Gansu where the terrain surface is very undulating with less vegetation developed,heavy soil and water loss loess plateau.And then the calculated result was merged into daily evapotranspiration,also the spatial pattern of the daily evapotranspiration was analyzed.Actual evapotranspiration of the study area was calculated with the extra resistance method and Penman-Monteith equation to compare with the TSEB parallel model estimated,which suggested that the TSEB parallel model can be used for the accurate estimation of evapotranspiration in loess hilly-gully region.

Key words:  Evapotranspiration      TSEB model      Remote sensing      Loess hilly-gully region     
Received:  29 October 2009      Published:  19 October 2010
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PAN Jing-hu, LIU Chun-yu. Retrieving Evapotranspiation of Loess Hilly-gully Region Using TSEB Parallel Model Based on Remote Sensing Image. Remote Sensing Technology and Application, 2010, 25(2): 183-188.

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