A global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensing

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cg.creator.identifierChandrashekhar Biradar: 0000-0002-9532-9452
cg.creator.identifierAlankar Devage Ranjith: 0000-0003-3745-3022
cg.creator.identifierSarath Gunasinghe: 0000-0002-2044-1685
cg.identifier.doihttps://doi.org/10.1016/j.jag.2008.11.002en
cg.issn0303-2434en
cg.issue2en
cg.journalInternational Journal of Applied Earth Observation and Geoinformationen
cg.volume11en
dc.contributor.authorBiradar, Chandrashekhar M.en
dc.contributor.authorThenkabail, Prasad S.en
dc.contributor.authorNoojipady, P.en
dc.contributor.authorLi, Yuan Jieen
dc.contributor.authorDheeravath, Venkateswarluen
dc.contributor.authorTurral, Hughen
dc.contributor.authorVelpuri, Naga Manoharen
dc.contributor.authorGumma, Murali K.en
dc.contributor.authorGangalakunta, O.R.P.en
dc.contributor.authorCai, X.L.en
dc.contributor.authorXiao, X.en
dc.contributor.authorSchull, M.A.en
dc.contributor.authorAlankara, Ranjithen
dc.contributor.authorGunasinghe, Sarathen
dc.contributor.authorMohideen, Sadiren
dc.date.accessioned2014-06-13T14:47:58Zen
dc.date.available2014-06-13T14:47:58Zen
dc.identifier.urihttps://hdl.handle.net/10568/40581
dc.titleA global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensingen
dcterms.abstractThe overarching goal of this study was to produce a global map of rainfed cropland areas (GMRCA) and calculate country-by-country rainfed area statistics using remote sensing data. A suite of spatial datasets, methods and protocols for mapping GMRCA were described. These consist of: (a) data fusion and composition of multi-resolution time-series mega-file data-cube (MFDC), (b) image segmentation based on precipitation, temperature, and elevation zones, (c) spectral correlation similarity (SCS), (d) protocols for class identification and labeling through uses of SCS R2-values, bi-spectral plots, space-time spiral curves (ST-SCs), rich source of field-plot data, and zoom-in-views of Google Earth (GE), and (e) techniques for resolving mixed classes by decision tree algorithms, and spatial modeling. The outcome was a 9-class GMRCA from which country-by-country rainfed area statistics were computed for the end of the last millennium. The global rainfed cropland area estimate from the GMRCA 9-class map was 1.13 billion hectares (Bha). The total global cropland areas (rainfed plus irrigated) was 1.53 Bha which was close to national statistics compiled by FAOSTAT (1.51 Bha). The accuracies and errors of GMRCA were assessed using field-plot and Google Earth data points. The accuracy varied between 92 and 98% with kappa value of about 0.76, errors of omission of 2-8%, and the errors of commission of 19-36%.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationBiradar, Chandrashekhar M.; Thenkabail, Prasad S.; Noojipady, P.; Li, Yuan Jie; Dheeravath, Venkateswarlu; Turral, Hugh; Velpuri, Manohar; Gumma, Murali Krishna; Gangalakunta, O. R. P.; Cai, X. L.; Xiao, X.; Schull, M. A.; Alankara, Ranjith; Gunasinghe, Sarath; Mohideen, Sadir. 2009. A global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensing. International Journal of Applied Earth Observation and Geoinformation, 11(2):114-129. doi: 10.1016/j.jag.2008.11.002en
dcterms.extentpp. 114-129en
dcterms.issued2009-04
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherElsevieren
dcterms.subjectmappingen
dcterms.subjectremote sensingen
dcterms.subjectrainfed farmingen
dcterms.subjectirrigated landen
dcterms.subjectfarmlanden
dcterms.typeJournal Article

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