Integrating remote sensing census and weather data for an assessment of rice yield water consumption and water productivity in the Indo-Gangetic river basin

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cg.contributor.affiliationInternational Water Management Instituteen
cg.coverage.countryPakistan
cg.coverage.countryIndia
cg.coverage.countryNepal
cg.coverage.countryBangladesh
cg.coverage.iso3166-alpha2PK
cg.coverage.iso3166-alpha2IN
cg.coverage.iso3166-alpha2NP
cg.coverage.iso3166-alpha2BD
cg.coverage.regionSouthern Asia
cg.identifier.doihttps://doi.org/10.1016/j.agwat.2009.09.021en
cg.issn0378-3774en
cg.issue2en
cg.journalAgricultural Water Managementen
cg.river.basinINDUSen
cg.river.basinGANGESen
cg.subject.cpwfFARMING SYSTEMSen
cg.subject.cpwfWATER USEen
cg.subject.cpwfWATER PRODUCTIVITYen
cg.subject.cpwfSPATIAL ANALYSISen
cg.volume97en
dc.contributor.authorCai, X.L.en
dc.contributor.authorSharma, Bharat R.en
dc.date.accessioned2012-10-23T05:46:50Zen
dc.date.available2012-10-23T05:46:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/24603
dc.titleIntegrating remote sensing census and weather data for an assessment of rice yield water consumption and water productivity in the Indo-Gangetic river basinen
dcterms.abstractCrop consumptive water use and productivity are key elements to understand basin watermanagement performance. This article presents a simplified approach tomap rice (Oryza sativa L.) water consumption, yield, and water productivity (WP) in the Indo-Gangetic Basin (IGB) by combining remotely sensed imagery, national census and meteorological data. The statistical rice cropped area and production data were synthesized to calculate district-level land productivity, which is then further extrapolated to pixel-level values using MODIS NDVI product based on a crop dominance map. The water consumption by actual evapotranspiration is estimated with Simplified Surface Energy Balance (SSEB) model taking meteorological data and MODIS land surface temperature products as inputs. WP maps are then generated by dividing the rice productivity map with the seasonal actual evapotranspiration (ET) map. The average rice yields for Pakistan, India, Nepal and Bangladesh in the basin are 2.60, 2.53, 3.54 and 2.75 tons/ha, respectively. The average rice ET is 416 mm, accounting for only 68.2% of potential ET. The average WP of rice is 0.74 kg/m3. The WP generally varies with the trends of yield variation. A comparative analysis of ET, yield, rainfall and WP maps indicates greater scope for improvement of the downstream areas of the Ganges basin. The method proposed is simple, with satisfactory accuracy, and can be easily applied elsewhere.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationCai, X. L., & Sharma, B. R. (2010). Integrating remote sensing, census and weather data for an assessment of rice yield, water consumption and water productivity in the Indo-Gangetic river basin. In Agricultural Water Management (Vol. 97, Issue 2, pp. 309–316). Elsevier BV. https://doi.org/10.1016/j.agwat.2009.09.021en
dcterms.extentpp. 309-316en
dcterms.issued2010-02
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherElsevieren
dcterms.replaceshttps://hdl.handle.net/10568/40487en
dcterms.subjectriceen
dcterms.subjectcrop yielden
dcterms.subjectmappingen
dcterms.subjectevapotranspirationen
dcterms.subjectwater productivityen
dcterms.subjectwater useen
dcterms.subjectmodelsen
dcterms.subjectremote sensingen
dcterms.subjectriver basinsen
dcterms.typeJournal Article

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