Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1059756
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dc.contributor.authorCOAGUILA, D. N.pt_BR
dc.contributor.authorHERNANDEZ, F. B. T.pt_BR
dc.contributor.authorTEIXEIRA, A. H. de C.pt_BR
dc.contributor.authorNEALE, C. M.pt_BR
dc.contributor.authorFRANCO, A. M.pt_BR
dc.contributor.authorLEIVAS, J. F.pt_BR
dc.date.accessioned2017-01-02T11:11:11Zpt_BR
dc.date.available2017-01-02T11:11:11Zpt_BR
dc.date.created2017-01-02pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationProceedings of SPIE - International Society for Optical Engineering, v. 9998, p. 99981E-1 - 99981E-10, 2016.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1059756pt_BR
dc.descriptionThe Cabeceira Comprida stream's watershed, located in Santa Fé do Sul, Brazil, is an agroecosystem with great demand of water for the population and agriculture. During the dry season the water demand exceeds the amount generated by the watershed. It is important to know the dynamics of the water above the ground to improve the water resources management. Ten Landsat 8 images were used combined with Northwestern São Paulo State Weather Network data under different thermohydrological conditions of the year 2014 to quantify actual evapotranspiration (ETa), biomass production (BIO) and water productivity (WP) based on ETa. Using the Simple Algorithm for Retrieving evapotranspiration (SAFER) for calculating ETa, the Monteith's radiation model was applied for estimating the BIO and for calculation of WP the ratio of BIO and ETa. The average pixels for ETa, BIO and WP ranged respectively from 0.38 ± 0.35 to 2.05 ± 0.76 mm day-1; 10.15 ± 12.19 to 71.61 ± 35.54 kg ha-1 day-1; 1.89 ± 0.76 to 3.88 ± 0.86 kg m-3. The lower values of ETa (0.38 mm day-1; DOY 220), BIO (10.15 kg ha-1 day-1; DOY 220) and WP (1.89 kg m-3; DOY 204) were obtained in winter, and highest values of ETa (2.05 mm day-1; DOY 364) and BIO (71.64 kg ha-1 day-1; DOY 364) in the summer and WP (3.88 kg m-3; DOY 92) in the autumn. The water productivity components can subsidize the monitoring of the agro-ecosystems, being a useful tool to quantify the annual variability of ETa and BIO.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectActual evapotranspirationpt_BR
dc.subjectSAFERpt_BR
dc.subjectEvapotranspiração realpt_BR
dc.subjectProdução de biomassapt_BR
dc.subjectLandsat 8pt_BR
dc.titleAnnual variability of water productivity components in the watershed of Cabeceira Comprida stream, Santa Fé do Sul, Brazil.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-05-30T11:11:11Zpt_BR
dc.subject.nalthesaurusbiomass productionpt_BR
riaa.ainfo.id1059756pt_BR
riaa.ainfo.lastupdate2017-05-30pt_BR
dc.identifier.doi10.1117/12.2242007eng
dc.contributor.institutionDaniel N. Coaguila, UNESP; Fernando B. T. Hernandez, UNESP; ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; Christopher M. Neale, Water for Food Global Institute at the University of Nebraska; Renato A. M. Franco, UNESP; JANICE FREITAS LEIVAS, CNPM.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPM)

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