SPATIAL UNCERTAINTY OF NUTRIENT LOSS BY EROSION IN SUGARCANE HARVESTING SCENARIOS

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorMendonca, Patrcia Gabarra-
Autor(es): dc.creatorSilva Junior, Joao Fernandes da-
Autor(es): dc.creatorOliveira, Ismenia Ribeiro de-
Autor(es): dc.creatorTeixeira, Daniel De Bortoli-
Autor(es): dc.creatorMoitinho, Mara Regina-
Autor(es): dc.creatorMartins Filho, Marcilio Vieira-
Autor(es): dc.creatorMarques Junior, Jose-
Autor(es): dc.creatorPereira, Gener Tadeu-
Data de aceite: dc.date.accessioned2021-03-11T00:01:37Z-
Data de disponibilização: dc.date.available2021-03-11T00:01:37Z-
Data de envio: dc.date.issued2018-11-27-
Data de envio: dc.date.issued2018-11-27-
Data de envio: dc.date.issued2015-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/01000683rbcs20140432-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/164929-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/164929-
Descrição: dc.descriptionThe assessment of spatial uncertainty in the prediction of nutrient losses by erosion associated with landscape models is an important tool for soil conservation planning. The purpose of this study was to evaluate the spatial and local uncertainty in predicting depletion rates of soil nutrients (P, K, Ca, and Mg) by soil erosion from green and burnt sugarcane harvesting scenarios, using sequential Gaussian simulation (SGS). A regular grid with equidistant intervals of 50 m (626 points) was established in the 200-ha study area, in Tabapua, Sao Paulo, Brazil. The rate of soil depletion (SD) was calculated from the relation between the nutrient concentration in the sediments and the chemical properties in the original soil for all grid points. The data were subjected to descriptive statistical and geostatistical analysis. The mean SD rate for all nutrients was higher in the slash-and-burn than the green cane harvest scenario (Student's t-test, p<0.05). In both scenarios, nutrient loss followed the order: Ca>Mg>K>P. The SD rate was highest in areas with greater slope. Lower uncertainties were associated to the areas with higher SD and steeper slopes. Spatial uncertainties were highest for areas of transition between concave and convex landforms.-
Formato: dc.format1181-1189-
Idioma: dc.languageen-
Publicador: dc.publisherSoc Brasileira De Ciencia Do Solo-
Relação: dc.relationRevista Brasileira De Ciencia Do Solo-
Relação: dc.relation0,679-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectgreen cane harvesting-
Palavras-chave: dc.subjectburnt cane harvesting-
Palavras-chave: dc.subjectgeostatistics-
Palavras-chave: dc.subjectlandforms-
Palavras-chave: dc.subjectsequential Gaussian simulation-
Título: dc.titleSPATIAL UNCERTAINTY OF NUTRIENT LOSS BY EROSION IN SUGARCANE HARVESTING SCENARIOS-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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