Water productivity assessment by using MODIS images and agrometeorological data in the Petrolina municipality, Brazil

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dc.contributor.authorTeixeira, Antônio H. de C.
dc.contributor.authorSherer-Warren, Morris
dc.contributor.authorHernandez, Fernando B.T. [UNESP]
dc.contributor.authorLopes, Hélio L.
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionAgência Nacional das Águas
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.date.accessioned2014-05-27T11:27:18Z
dc.date.available2014-05-27T11:27:18Z
dc.date.issued2012-12-01
dc.description.abstractThe municipality of Petrolina, located in the semi-arid region of Brazil, is highlighted as an important agricultural growing region, however the irrigated areas have cleared natural vegetation inducing a loss of biodiversity. To analyze the contrast between these two ecosystems the large scale values of biomass production (BIO), evapotranspiration (ET) and water productivity (WP) were quantified. Monteithś equation was applied for estimating the absorbed photosynthetically active radiation (APAR), while the new SAFER (Simple Algorithm For Evapotranspiration Retrieving) algorithm was used to retrieve ET. The water productivity (WP) was analysed by the ratio of BIO by ET at monthly time scale with four bands of MODIS satellite images together with agrometeorological data for the year of 2011. The period with the highest water productivity values were from March to April in the rainy period for both irrigated and not irrigated conditions. However the largest ET rates were in November for irrigated crops and April for natural vegetation. More uniformity of the vegetation and water variables occurs in natural vegetation, evidenced by the lower values of standard deviation when comparing to irrigated crops, due to the different crop stages, cultural and irrigation managements. The models applied with MODIS satellite images on a large scale are considered to be suitable for water productivity assessments and for quantifying the effects of increasing irrigated areas over natural vegetation on regional water consumption in situations of quick changing land use pattern. © 2012 SPIE.en
dc.description.affiliationEmbrapa Semiárido, Petrolina
dc.description.affiliationAgência Nacional das Águas, Brasília
dc.description.affiliationUniversidade Estadual de São Paulo, Ilha Solteira, São Paulo
dc.description.affiliationUniversidade Federal de Pernambuco, Recife
dc.description.affiliationUnespUniversidade Estadual de São Paulo, Ilha Solteira, São Paulo
dc.identifierhttp://dx.doi.org/10.1117/12.974376
dc.identifier.citationProceedings of SPIE - The International Society for Optical Engineering, v. 8531.
dc.identifier.doi10.1117/12.974376
dc.identifier.issn0277-786X
dc.identifier.issn1996-756X
dc.identifier.scopus2-s2.0-84880307334
dc.identifier.urihttp://hdl.handle.net/11449/73838
dc.language.isoeng
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBiomass production
dc.subjectEvapotranspiration
dc.subjectNDVI
dc.subjectSurface albedo
dc.subjectSurface resistance
dc.subjectSurface temperature
dc.subjectAgro-meteorological data
dc.subjectBiomass productions
dc.subjectIrrigation management
dc.subjectMODIS satellite images
dc.subjectPhotosynthetically active radiation
dc.subjectSurface temperatures
dc.subjectAlgorithms
dc.subjectArid regions
dc.subjectAtmospheric temperature
dc.subjectBiodiversity
dc.subjectCrops
dc.subjectEcosystems
dc.subjectForestry
dc.subjectHydrology
dc.subjectProductivity
dc.subjectRadiometers
dc.subjectRemote sensing
dc.subjectSatellite imagery
dc.subjectVegetation
dc.subjectWater supply
dc.subjectWater management
dc.titleWater productivity assessment by using MODIS images and agrometeorological data in the Petrolina municipality, Brazilen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://proceedings.spiedigitallibrary.org/ss/TermsOfUse.aspx
unesp.author.lattes7276242706611764[3]
unesp.author.orcid0000-0001-9241-243X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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Artigos - Fitossanidade, Engenharia Rural e Solos - FEIS