Arid
DOI10.3390/rs70505951
Impact of Sowing Date on Yield and Water Use Efficiency of Wheat Analyzed through Spatial Modeling and FORMOSAT-2 Images
Duchemin, Benoit1; Fieuzal, Remy1; Augustin Rivera, Miguel2; Ezzahar, Jamal3; Jarlan, Lionel1; Cesar Rodriguez, Julio4; Hagolle, Olivier1; Watts, Christopher4
通讯作者Fieuzal, Remy
来源期刊REMOTE SENSING
ISSN2072-4292
出版年2015
卷号7期号:5页码:5951-5979
英文摘要

Regional analysis of water use efficiency (WUE) is a relevant method for diagnosing the performance of irrigation systems in water-limited environments. In this study, we investigated the potential of FORMOSAT-2 images to provide spatial estimates of WUE over irrigated wheat crops cultivated within the semi-arid Yaqui Valley, in the northwest of Mexico. FORMOSAT-2 provided us with a unique dataset of 36 images at a high resolution (8 m) encompassing the wheat growing season from November 2007 to May 2008. Time series of green leaf area index were derived from these satellite images and used to calibrate a simple crop/water balance model. The method was applied over an 8 x 8 km(2) irrigated area on up to 530 wheat fields. It allowed us to accurately reproduce the time courses of Leaf Area Index and dry aboveground biomass, as well as evapotranspiration and soil moisture. In a second step, we analyzed the variations of WUE as the ratio of accumulated dry aboveground biomass to seasonal evapotranspiration. Despite the study area being rather small and homogeneous (soil, climate), we observed a large range in wheat biomass production, from 5 to 15 t center dot ha(-1), which was primarily related to the timing of plant emergence. In contrast, the seasonal evapotranspiration only varied from 350 to 450 mm, with no evident link with sowing practices. A significant gain in crop water productivity was found for the fields sown the earliest (maximal WUE around 3.5 kg center dot m(-3)) compared to those sown the latest (minimal WUE around 1.5 kg center dot m(-3)). These results demonstrated the value of the FORMOSAT-2 images to provide spatial estimates of crop production and water consumption. The detailed information provided by such high space and time resolution imaging systems is highly valuable to identify agricultural practices that could enlarge crop water productivity.


类型Article
语种英语
国家France ; Mexico ; Morocco
收录类别SCI-E
WOS记录号WOS:000357596900009
WOS关键词RADAR SATELLITE DATA ; LEAF-AREA INDEX ; YAQUI VALLEY ; SURFACE-TEMPERATURE ; TIME-SERIES ; STRAW MANAGEMENT ; CROP PRODUCTION ; HEAT-FLUX ; SOIL ; IRRIGATION
WOS类目Remote Sensing
WOS研究方向Remote Sensing
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/190159
作者单位1.CESBIO UMR CNRS CNES IRD UPS, Toulouse 9, France;
2.ITSON, Dept Cienciasdel Agua & Medio Ambiente, Obregon 85000, Sonora, Mexico;
3.Fac Sci Semlalia, Marrakech 40000, Morocco;
4.UNISON, Hermosillo 83000, Sonora, Mexico
推荐引用方式
GB/T 7714
Duchemin, Benoit,Fieuzal, Remy,Augustin Rivera, Miguel,et al. Impact of Sowing Date on Yield and Water Use Efficiency of Wheat Analyzed through Spatial Modeling and FORMOSAT-2 Images[J],2015,7(5):5951-5979.
APA Duchemin, Benoit.,Fieuzal, Remy.,Augustin Rivera, Miguel.,Ezzahar, Jamal.,Jarlan, Lionel.,...&Watts, Christopher.(2015).Impact of Sowing Date on Yield and Water Use Efficiency of Wheat Analyzed through Spatial Modeling and FORMOSAT-2 Images.REMOTE SENSING,7(5),5951-5979.
MLA Duchemin, Benoit,et al."Impact of Sowing Date on Yield and Water Use Efficiency of Wheat Analyzed through Spatial Modeling and FORMOSAT-2 Images".REMOTE SENSING 7.5(2015):5951-5979.
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