Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information

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dc.contributor.authorTeixeira, Daniel de Bortoli [UNESP]
dc.contributor.authorBicalho, Elton da Silva [UNESP]
dc.contributor.authorPanosso, Alan Rodrigo [UNESP]
dc.contributor.authorCerri, Carlos Eduardo Pellegrino
dc.contributor.authorPereira, Gener Tadeu [UNESP]
dc.contributor.authorScala Júnior, Newton La [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T13:13:31Z
dc.date.available2014-05-20T13:13:31Z
dc.date.issued2013-06-01
dc.description.abstractSoil CO2 emission (FCO2) is governed by the inherent properties of the soil, such as bulk density (BD). Mapping of FCO2 allows the evaluation and identification of areas with different accumulation potential of carbon. However, FCO2 mapping over larger areas is not feasible due to the period required for evaluation. This study aimed to assess the quality of FCO2 spatial estimates using values of BD as secondary information. FCO2 and BD were evaluated on a regular sampling grid of 60 m × 60 m comprising 141 points, which was established on a sugarcane area. Four scenarios were defined according to the proportion of the number of sampling points of FCO2 to those of BD. For these scenarios, 67 (F67), 87 (F87), 107 (F107) and 127 (F127) FCO2 sampling points were used in addition to 127 BD sampling points used as supplementary information. The use of additional information from the BD provided an increase in the accuracy of the estimates only in the F107, F67 and F87 scenarios, respectively. The F87 scenario, with the approximate ratio between the FCO2 and BD of 1.00:1.50, presented the best relative improvement in the quality of estimates, thereby indicating that the BD should be sampled at a density 1.5 time greater than that applied for the FCO2. This procedure avoided problems related to the high temporal variability associated with FCO2, which enabled the mapping of this variable to be elaborated in large areas.en
dc.description.affiliationUNESP FCAV Depto. de Ciências Exatas
dc.description.affiliationUSP ESALQ Depto. de Ciência do Solo
dc.description.affiliationUnespUNESP FCAV Depto. de Ciências Exatas
dc.format.extent195-203
dc.identifierhttp://dx.doi.org/10.1590/S0103-90162013000300008
dc.identifier.citationScientia Agricola. São Paulo - Escola Superior de Agricultura Luiz de Queiroz, v. 70, n. 3, p. 195-203, 2013.
dc.identifier.doi10.1590/S0103-90162013000300008
dc.identifier.fileS0103-90162013000300008.pdf
dc.identifier.issn0103-9016
dc.identifier.lattes7053426037771460
dc.identifier.lattes1449605928537533
dc.identifier.scieloS0103-90162013000300008
dc.identifier.urihttp://hdl.handle.net/11449/1287
dc.identifier.wosWOS:000320022600008
dc.language.isoeng
dc.publisherUniversidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ)
dc.relation.ispartofScientia Agricola
dc.relation.ispartofsjr0,578
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectGeostatisticsen
dc.subjectcokrigingen
dc.subjectordinary krigingen
dc.subjectcross-variogramen
dc.titleSpatial variability of soil CO2 emission in a sugarcane area characterized by secondary informationen
dc.typeArtigo
unesp.author.lattes7053426037771460
unesp.author.lattes1449605928537533
unesp.author.lattes2134397589741043[3]
unesp.author.orcid0000-0001-9916-1696[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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