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RESEARCH PRODUCT
SMAP Multi-Temporal vegetation optical depth retrieval as an indicator of crop yield trends and crop composition
Dara EntekhabiDavid ChaparroAlexandra G. KoningsMercè Vall-llosseraAdriano CampsMaria Pilessubject
YieldTeledetecció010504 meteorology & atmospheric sciencesAgricultural engineering0211 other engineering and technologiesCropsSoil science:Enginyeria agroalimentària [Àrees temàtiques de la UPC]02 engineering and technology01 natural sciencesCropYield (wine)Enginyeria agronòmicaVegetation optical depthWater content021101 geological & geomatics engineering0105 earth and related environmental sciences2. Zero hungerbusiness.industrySaturation (genetic)Crop yieldPlant densitySMAPRemote sensing15. Life on land:Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció [Àrees temàtiques de la UPC]AgricultureEnvironmental scienceSatelliteComposition (visual arts)businessdescription
Vegetation Optical Depth (VOD) is related to Vegetation Water Content (VWC). This provides new and highly valuable information for ecological and agricultural studies. In this work, VOD from the Soil Moisture Active-Passive (SMAP) satellite has been retrieved with the new Multi-Temporal Dual-Channel Algorithm (MT-DCA). Then, it has been applied to the study of crop yield trends and crop composition. The increase on VOD (¿VOD) during crop development has been compared to yield data in two selected regions located in the United States. The first region presents a heterogeneous crop composition and weak ¿VOD-yield relationship (r2=0.21). The second region presents a highly homogenous cover and a strong exponential relationship (r2=0.65) between ¿VOD and yield. A saturation of yield is observed at a certain ¿VOD value. This pattern is probably due to an increasing plant density, which limits the crop yield due to plant physiological stress. Peer Reviewed
year | journal | country | edition | language |
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2017-07-01 | 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) |