Journal of Food, Agriculture and Environment

Temporal-spatial variation in crop evapotranspiration in Hebei Plain, China

Author(s):

Shengwei Zhang ^{1, 2}, Yuping Lei ^1*, Hongjun Li ¹, Zhen Wang ^{1, 2}

Recieved Date: 2009-11-27, Accepted Date: 2010-04-12

Abstract:

Evapotranspiration (ET) is one of the most crucial components in the hydrological cycle and in water management. In this study a temporal-spatial variation of crop ET based on Moderate Resolution Imaging Spectroradiometer (MODIS) products is presented by using the Surface Energy Balance Algorithm for Land (SEBAL) method. The results show that MODIS data provided satisfactory ET results in crop land area for the Hebei Plain in China. The average bias was 0.86 mm, the root mean square error (RMSE) was 1.2 mm and correlation (R²) was 0.74, respectively. Annual variation of difference crops show that the ET is mainly affected by crop growth and irrigation regime. Spatial distribution of ET shows that the winter wheat-summer rotation system region is the highest water consumption compare with other crops in Hebei Plain.

Keywords:

Remote sensing, evapotranspiration, MODIS, temporal-spatial variation, crop, Hebei Plain

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 2
Category: Agriculture
Pages: 672-677

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