SPATIAL MAPPING OF ACTUAL EVAPOTRANSPIRATION AND WATER DEFICIT WITH MODIS PRODUCTS IN THE SONGNEN PLAIN, NORTHEAST CHINA

被引：2

作者：

Zeng, Lihong ^{[1
]}

Song, Kaishan ^{[1
]}

Zhang, Bai ^{[1
]}

Wang, Zongming ^{[1
]}

机构：

[1] Chinese Acad Sci, NE Inst Geog & Agr Ecol, Changchun 130012, Peoples R China

来源：

2010 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2010年

关键词：

evapotranspiration; water deficit; SEBAL model; MODIS products; Songnen Plain; ALGORITHM;

D O I：

10.1109/IGARSS.2010.5651301

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Analysis of spatial patterns of evapotranspiration (ET) and water deficit (WD) is significant in the evaluation of crop growth status and water use efficiency for the Songnen Plain, an important commodity grain product base of China. Spatial patterns of ET and WD in the Songnen Plain of 2008 growing season (from May to September) were mapped by using MODIS products and meteorological data. The results indicated that ET and WD exhibited obvious spatial variation and gradually increased from southwest to east and northeast. Total ET over the Songnen Plain during the 2008 growing season ranged from 182.7mm to 1002.4mm with the mean value of 591.1mm, and WD ranged from -163.0mm to 645.9mm with the mean value of 195.9mm. Average ET and WD for different land covers varied significantly, water-body and wetlands obtained the highest ET and WD values, while grassland got the lowest ET and WD values. Through this study, it would provide some supports for the assessment of crop growth in arid environments of Songnen Plain.

引用

页码：879 / 882

页数：4

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