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dc.contributor.authorAQUINO, R. F.pt_BR
dc.contributor.authorSILVA, M. L. N.pt_BR
dc.contributor.authorFREITAS, D. A. F. dept_BR
dc.contributor.authorCURI, N.pt_BR
dc.contributor.authorMELLO, C. R. dept_BR
dc.contributor.authorAVANZI, J. C.pt_BR
dc.date.accessioned2012-10-30T11:11:11Zpt_BR
dc.date.available2012-10-30T11:11:11Zpt_BR
dc.date.created2012-10-30pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationCiência e Agrotecnologia, Lavras, v. 36, n. 5, p. 533-542, set./out. 2012.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/938467pt_BR
dc.descriptionRainfall erosivity and its spatial variability were studied for 54 pluviometric stations in Southern Minas Gerais State (48º00? - 44º00?W; 23º50? - 20º00?S), aiming to plan the land-use strategies. Therefore, erosivity factor was determined for the pluviometric stations, using long-term rainfall data sets obtained along with the Brazilian National Water Agency? ANA, which varied from 15 to 40 years. The monthly and annual erosivity indexes were generated using Fournier equation for Lavras, MG and the spatial distribution of rainfall erosivity was studied on the basis of geostatistical approaches considering only the distance which separates them, developing the isotropic experimental semivariogram. The semivariogram adjustment was done based on the Weighted Least Squares method and the spatial dependence degree. Once the structure and the semivariogram adjustment were defined, the ordinary kriging maps were created, providing erosivity spatial behavior in Southern Minas Gerais. It was observed that the Southern Minas Gerais presents high erosivity patterns, ranging from 5,145 to 7,776 MJ mm ha-1 h-1 year-1, in Ijaci (north of region) and Itajubá (southern region), respectively. Besides, it was verified that the erosivity indexes are intensely influenced by the topography, associated with climatic conditions. Higher erosivity is connected to areas with a higher altitude, such as along the Mantiqueira Range Mountain, and on high plateaus and mountain ranges in the North-Central part of the region. The geostatistical approach using longterm rainfall data in Southern region of Minas Gerais state, which is a relatively heterogeneous region in terms of altitude, soil depth and slope, showed to be adequate to the proposal of this study.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectPotencial erosivopt_BR
dc.subjectSustentabilidade do solopt_BR
dc.subjectKrigagempt_BR
dc.subjectMinas Geraispt_BR
dc.titleSpatial variability of the rainfall erosivity in southern region of Minas Gerais State, Brazil.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2012-11-09T11:11:11Zpt_BR
dc.subject.thesagroSolopt_BR
dc.subject.thesagroPrecipitação pluvialpt_BR
riaa.ainfo.id938467pt_BR
riaa.ainfo.lastupdate2012-11-09pt_BR
dc.contributor.institutionREGIMEIRE FREITAS AQUINO, INSTITUTO FEDERAL DE EDUCAÇÃO-São João Del Rei, MG; MARX LEANDRO NAVES SILVA, UNIVERSIDADE FEDERAL DE LAVRAS; DIEGO ANTONIO FRANÇA DE FREITAS, UNIVERSIDADE FEDERAL DE LAVRAS; NILTON CURI, UNIVERSIDADE FEDERAL DE LAVRAS; CARLOS ROGÉRIO DE MELLO, UNIVERSIDADE FEDERAL DE LAVRAS; JUNIOR CESAR AVANZI, CNPASA.pt_BR
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