Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0103-90162013000300008 http://hdl.handle.net/11449/1287 |
Resumo: | Soil 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. |
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Repositório Institucional da UNESP |
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spelling |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary informationGeostatisticscokrigingordinary krigingcross-variogramSoil 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.UNESP FCAV Depto. de Ciências ExatasUSP ESALQ Depto. de Ciência do SoloUNESP FCAV Depto. de Ciências ExatasUniversidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ)Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Teixeira, Daniel de Bortoli [UNESP]Bicalho, Elton da Silva [UNESP]Panosso, Alan Rodrigo [UNESP]Cerri, Carlos Eduardo PellegrinoPereira, Gener Tadeu [UNESP]Scala Júnior, Newton La [UNESP]2014-05-20T13:13:31Z2014-05-20T13:13:31Z2013-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article195-203application/pdfhttp://dx.doi.org/10.1590/S0103-90162013000300008Scientia Agricola. São Paulo - Escola Superior de Agricultura Luiz de Queiroz, v. 70, n. 3, p. 195-203, 2013.0103-9016http://hdl.handle.net/11449/128710.1590/S0103-90162013000300008S0103-90162013000300008WOS:000320022600008S0103-90162013000300008.pdf70534260377714601449605928537533SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScientia Agricola0,578info:eu-repo/semantics/openAccess2023-12-20T06:22:29Zoai:repositorio.unesp.br:11449/1287Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-20T06:22:29Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
title |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
spellingShingle |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information Teixeira, Daniel de Bortoli [UNESP] Geostatistics cokriging ordinary kriging cross-variogram |
title_short |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
title_full |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
title_fullStr |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
title_full_unstemmed |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
title_sort |
Spatial variability of soil CO2 emission in a sugarcane area characterized by secondary information |
author |
Teixeira, Daniel de Bortoli [UNESP] |
author_facet |
Teixeira, Daniel de Bortoli [UNESP] Bicalho, Elton da Silva [UNESP] Panosso, Alan Rodrigo [UNESP] Cerri, Carlos Eduardo Pellegrino Pereira, Gener Tadeu [UNESP] Scala Júnior, Newton La [UNESP] |
author_role |
author |
author2 |
Bicalho, Elton da Silva [UNESP] Panosso, Alan Rodrigo [UNESP] Cerri, Carlos Eduardo Pellegrino Pereira, Gener Tadeu [UNESP] Scala Júnior, Newton La [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Teixeira, Daniel de Bortoli [UNESP] Bicalho, Elton da Silva [UNESP] Panosso, Alan Rodrigo [UNESP] Cerri, Carlos Eduardo Pellegrino Pereira, Gener Tadeu [UNESP] Scala Júnior, Newton La [UNESP] |
dc.subject.por.fl_str_mv |
Geostatistics cokriging ordinary kriging cross-variogram |
topic |
Geostatistics cokriging ordinary kriging cross-variogram |
description |
Soil 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. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-01 2014-05-20T13:13:31Z 2014-05-20T13:13:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0103-90162013000300008 Scientia Agricola. São Paulo - Escola Superior de Agricultura Luiz de Queiroz, v. 70, n. 3, p. 195-203, 2013. 0103-9016 http://hdl.handle.net/11449/1287 10.1590/S0103-90162013000300008 S0103-90162013000300008 WOS:000320022600008 S0103-90162013000300008.pdf 7053426037771460 1449605928537533 |
url |
http://dx.doi.org/10.1590/S0103-90162013000300008 http://hdl.handle.net/11449/1287 |
identifier_str_mv |
Scientia Agricola. São Paulo - Escola Superior de Agricultura Luiz de Queiroz, v. 70, n. 3, p. 195-203, 2013. 0103-9016 10.1590/S0103-90162013000300008 S0103-90162013000300008 WOS:000320022600008 S0103-90162013000300008.pdf 7053426037771460 1449605928537533 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Scientia Agricola 0,578 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
195-203 application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ) |
publisher.none.fl_str_mv |
Universidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ) |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797790058709778432 |