[1]YU Hong-bo,BAO Yu-hai,LI He-ping,et al.Remote Sensing Retrieval of Evapotranspiration in Xilin River Watershed[J].Research of Soil and Water Conservation,2014,21(01):224-228.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 01
Page number:
224-228
Column:
Public date:
2014-02-28
- Title:
-
Remote Sensing Retrieval of Evapotranspiration in Xilin River Watershed
- Author(s):
-
YU Hong-bo1,2, BAO Yu-hai1, LI He-ping3, WANG Jun3
-
1. Inner Mongolian Key Laboratory of Remote Sensing and Geography Information System, Inner Mongolia Normal University, Hohhot 010022, China;
2. College of Geography Science, Inner Mongolia Normal University, Hohhot 010022, China;
3. Institute of Water Resources for Pastoral Area, IWHR, Hohhot 010020, China
-
- Keywords:
-
Xilin River watershed; evapotranspiration; remote sensing
- CLC:
-
P334.92
- DOI:
-
-
- Abstract:
-
The study area is the Xilin River watershed. Remote sensing approach was used to retrieve instantaneous evapotranspiration based on the estimation of land surface fluxes from MODIS image in 2012, and the auxiliary environmental data from the same time periods. Daily evapotranspiration was estimated by scaling. The result of evapotranspiration distribution was consistent with land surface conditions. The daily evapotranspiration in the upper reaches was higher than in the middle and lower reaches. The daily evapotranspiration of wetland vegetation and meadow grassland was higher. The daily evapotranspiration of dense vegetation such as farmland was higher than the sparse one. The distribution curve of daily evapotranspiration was characterized as Gaussian distribution. The main value was between 2 and 7 mm/d and the average value was 4.51 m/d. Results were verified by using the FAO method. This level of uncertainty was acceptable; therefore, the method that we developed was applicable.