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resumen

Resumen
Reliable and timely information on agricultural production is essential for ensuring world food security. Freely available medium-resolution satellite data (e.g. Landsat, Sentinel) offer the possibility of improved global agriculture monitoring. Here we develop and test a method for estimating in-season crop acreage using a probability sample of field visits and producing wall-to-wall crop type maps at national scales. The method is illustrated for [ver mas...]
dc.contributor.authorXiao-Peng, Song
dc.contributor.authorPotapov, Peter V.
dc.contributor.authorKrylov, Alexander
dc.contributor.authorKing, LeeAnn
dc.contributor.authorDi Bella, Carlos Marcelo
dc.contributor.authorHudson, Amy
dc.contributor.authorKhan, Ahmad
dc.contributor.authorAdusei, Bernard
dc.contributor.authorStehman, Stephen V.
dc.contributor.authorHansen, Matthew C.
dc.date.accessioned2017-07-28T18:26:26Z
dc.date.available2017-07-28T18:26:26Z
dc.date.issued2017
dc.identifier.issn0034-4257
dc.identifier.otherhttps://doi.org/10.1016/j.rse.2017.01.008
dc.identifier.urihttp://hdl.handle.net/20.500.12123/840
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0034425717300081?via%3Dihub
dc.description.abstractReliable and timely information on agricultural production is essential for ensuring world food security. Freely available medium-resolution satellite data (e.g. Landsat, Sentinel) offer the possibility of improved global agriculture monitoring. Here we develop and test a method for estimating in-season crop acreage using a probability sample of field visits and producing wall-to-wall crop type maps at national scales. The method is illustrated for soybean cultivated area in the US for 2015. A stratified, two-stage cluster sampling design was used to collect field data to estimate national soybean area. The field-based estimate employed historical soybean extent maps from the U.S. Department of Agriculture (USDA) Cropland Data Layer to delineate and stratify U.S. soybean growing regions. The estimated 2015 U.S. soybean cultivated area based on the field sample was 341,000 km2 with a standard error of 23,000 km2. This result is 1.0% lower than USDA's 2015 June survey estimate and 1.9% higher than USDA's 2016 January estimate. Our area estimate was derived in early September, about 2 months ahead of harvest. To map soybean cover, the Landsat image archive for the year 2015 growing season was processed using an active learning approach. Overall accuracy of the soybean map was 84%. The field-based sample estimated area was then used to calibrate the map such that the soybean acreage of the map derived through pixel counting matched the sample-based area estimate. The strength of the sample-based area estimation lies in the stratified design that takes advantage of the spatially explicit cropland layers to construct the strata. The success of the mapping was built upon an automated system which transforms Landsat images into standardized time-series metrics. The developed method produces reliable and timely information on soybean area in a cost-effective way and could be applied to other regions and potentially other crops in an operational mode.
dc.formatapplication/pdf
dc.language.isoeng
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceRemote sensing of environment 190 : 383-395. (2017)
dc.subjectReconocimiento de Suelos
dc.subjectImágenes por Satélites
dc.subjectSatellite Imageryeng
dc.subjectSoja
dc.subjectSoybeanseng
dc.subjectSoil Surveyseng
dc.subject.otherEstados Unidos
dc.titleNational-scale soybean mapping and area estimation in the United States using medium resolution satellite imagery and field survey
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.description.origenInst. de Clima y Agua
dc.gic154271
dc.description.filFil: Xiao-Peng, Song. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: Potapov, Peter V. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: Krylov, Alexander. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: King, LeeAnn. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: Di Bella, Carlos Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.filFil: Hudson, Amy. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: Khan, Ahmad. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: Adusei, Bernard. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.description.filFil: Stehman, Stephen V. Department of Forest and Natural Resources Management; Estados Unidos
dc.description.filFil: Hansen, Matthew C. University of Maryland. Department of Geographical Sciences; Estados Unidos
dc.subtypecientifico


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