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Estimating high spatiotemporal resolution evapotranspiration over a winter wheat field using an IKONOS image based complementary relationship and Lysimeter observations

文献类型： 外文期刊

作者： Yang, Guijun 1 ; Pu, Ruiliang 4 ; Zhao, Chunjiang 1 ; Xue, Xuzhang 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Informat Technol Agr, Beijing 100089, Peoples R China

2.Chinese Acad Sci, Inst Remote Sensing Applicat, State Key Lab Remote Sensing Sci, Beijing, Peoples R China

3.Beijing Normal Univ, Beijing 100875, Peoples R China

4.Univ S Florida, Dept Geog Environm & Planning, Tampa, FL 33620 USA

关键词： Complementary relationship model;IKONOS;Evapotranspiration;Lysimeter

期刊名称：AGRICULTURAL WATER MANAGEMENT （ 影响因子：4.516； 五年影响因子：5.12 ）

ISSN： 0378-3774

年卷期： 2014 年 133 卷

页码：

收录情况： SCI

摘要： Mapping high spatiotemporal resolution evapotranspiration (ET) over large areas is important for water resources planning, precision irrigation and monitoring water use efficiency. However, both traditional field measurement and aerodynamic estimation mainly focus on obtaining local ET. Remote sensing observations usually can be used to retrieve instantaneous ET at a low spatial resolution over region or global scale. Therefore, using field measurements and high resolution image data to generate high spatiotemporal resolution ET is becoming an important research direction. In this study, the complementary relationship model (CR) was tested together with meteorological data to estimate actual ET, and the results were validated by the Lysimeter observation. Furthermore, CR model combined with high resolution IKONOS data was used to estimate instantaneous field scale ET that was then transferred to daily ET. The cumulative evapotranspiration (ET) of winter wheat during the reproductive period from March through June of 2011 was 469.12 mm, essentially corresponding to the annual precipitation in the study area. The highest accuracy of estimating ET by CR model with remote sensing data was in May (R-2 = 0.863, RMSE = 0.103 mm). The transferred daily ET by a self-preservation of evaporative fraction (EF) approach from the CR modeling instantaneous ET was consistent with The Lysimeter measurements for all four months, March through June, 2011 (R-2 = 0.937, RMSE = 0.668 mm). The experimental results demonstrate that CR model can be used to accurately estimate actual ET with both meteorological data and high resolution remote sensing data at a regional scale. (C) 2013 Elsevier By. All rights reserved.

  • 相关文献

[1]Spatial-Temporal Analysis of Field Evapotranspiration Based on Complementary Relationship Model and IKONOS Data. Yang Guijun,Zhao Chunjiang,Xu Qingyun. 2013

[2]Spatial-Temporal Analysis of Field Evapotranspiration Based on Complementary Relationship Model and IKONOS Data. Yang Guijun,Zhao Chunjiang,Xu Qingyun. 2013

[3]基于主成分融合信息失真的城市IKONOS影像阴影自动提取研究. 李存军,刘良云,王纪华,赵春江. 2008

[4]基于互补相关模型和IKONOS数据的农田蒸散时空特征分析. 赵春江,杨贵军,薛绪掌,冯海宽,石月婵. 2013

[5]The Characteristics of Annual Water Consumption for Winter Wheat and Summer Maize in North China Plain. Kong, Fanlei,Shi, Leigang,Chen, Fu,Cai, Wantao. 2012

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