Dynamics simulation of soil carbon in a small rural watershed by Century model

Detalhes bibliográficos
Autor(a) principal: Lopes, Fabíola
Data de Publicação: 2008
Outros Autores: Merten, Gustavo Henrique, Mielniczuk, João, Tornquist, Carlos Gustavo, Oliveira, Elisandra Solange
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/332
Resumo: The objective of this study was to combine the Century model with geoprocessing and remote sensing techniques, in order to evaluate spatial-temporal dynamics in total organic carbon (TOC). The study was carried out in a small rural watershed in Northeastern of Rio Grande do Sul State, Brazil. The area was initially under forest cover, which was progressively converted to agriculture in a period of 80 years. The proper calibrating of the model, especially in terms of TOC decomposition parameters, during the initial years of tillage, was essential to produce a coherent simulation of TOC values. Regarding the spatial distribution of TOC, it was observed that greatest impact of soil management on original contents occurred in the areas under cultivation since 1925, which showed a decline of 58.2% in TOC. The Century model integration with a geographic information system makes it possible the study of spatial-temporal dynamics of TOC and the performing of TOC distribution inventories.
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spelling Dynamics simulation of soil carbon in a small rural watershed by Century modelSimulação da dinâmica do carbono do solo numa microbacia rural pelo modelo CenturyNicotiana tabacum; soil organic carbon; geoprocessing; remote sensingNicotiana tabacum; carbono orgânico do solo; geoprocessamento; sensoriamento remotoThe objective of this study was to combine the Century model with geoprocessing and remote sensing techniques, in order to evaluate spatial-temporal dynamics in total organic carbon (TOC). The study was carried out in a small rural watershed in Northeastern of Rio Grande do Sul State, Brazil. The area was initially under forest cover, which was progressively converted to agriculture in a period of 80 years. The proper calibrating of the model, especially in terms of TOC decomposition parameters, during the initial years of tillage, was essential to produce a coherent simulation of TOC values. Regarding the spatial distribution of TOC, it was observed that greatest impact of soil management on original contents occurred in the areas under cultivation since 1925, which showed a decline of 58.2% in TOC. The Century model integration with a geographic information system makes it possible the study of spatial-temporal dynamics of TOC and the performing of TOC distribution inventories.O objetivo deste trabalho foi combinar o modelo Century com técnicas de geoprocessamento e sensoriamento remoto, para avaliar a dinâmica espaço-temporal do carbono orgânico total do solo (COT). O estudo foi implementado numa microbacia rural, na encosta superior do Nordeste do Rio Grande do Sul, RS, que apresentava inicialmente uma cobertura florestal que foi convertida para agricultura, ao longo de 80 anos. A calibração adequada do modelo, principalmente dos parâmetros relacionados à decomposição do COT, nos anos iniciais de exploração agrícola, foi fundamental para possibilitar a simulação coerente dos valores de COT. Em relação à distribuição espacial do COT, foi verificado que o maior impacto da agricultura, sobre o estoque original de COT, ocorreu nas áreas sob cultivo desde 1925, nas quais se constatou decréscimo de 58,2% do COT. Verificou-se que a integração do Century com um sistema de informações geográficas torna possível o estudo da dinâmica espaço-temporal do COT e a realização de inventários relativos à distribuição do COT.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPqLopes, FabíolaMerten, Gustavo HenriqueMielniczuk, JoãoTornquist, Carlos GustavoOliveira, Elisandra Solange2008-08-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/332Pesquisa Agropecuaria Brasileira; v.43, n.6, jun. 2008; 745-753Pesquisa Agropecuária Brasileira; v.43, n.6, jun. 2008; 745-7531678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/332/5452https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/332/241info:eu-repo/semantics/openAccess2010-10-19T13:20:08Zoai:ojs.seer.sct.embrapa.br:article/332Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-10-19T13:20:08Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Dynamics simulation of soil carbon in a small rural watershed by Century model
Simulação da dinâmica do carbono do solo numa microbacia rural pelo modelo Century
title Dynamics simulation of soil carbon in a small rural watershed by Century model
spellingShingle Dynamics simulation of soil carbon in a small rural watershed by Century model
Lopes, Fabíola
Nicotiana tabacum; soil organic carbon; geoprocessing; remote sensing
Nicotiana tabacum; carbono orgânico do solo; geoprocessamento; sensoriamento remoto
title_short Dynamics simulation of soil carbon in a small rural watershed by Century model
title_full Dynamics simulation of soil carbon in a small rural watershed by Century model
title_fullStr Dynamics simulation of soil carbon in a small rural watershed by Century model
title_full_unstemmed Dynamics simulation of soil carbon in a small rural watershed by Century model
title_sort Dynamics simulation of soil carbon in a small rural watershed by Century model
author Lopes, Fabíola
author_facet Lopes, Fabíola
Merten, Gustavo Henrique
Mielniczuk, João
Tornquist, Carlos Gustavo
Oliveira, Elisandra Solange
author_role author
author2 Merten, Gustavo Henrique
Mielniczuk, João
Tornquist, Carlos Gustavo
Oliveira, Elisandra Solange
author2_role author
author
author
author
dc.contributor.none.fl_str_mv
CNPq
dc.contributor.author.fl_str_mv Lopes, Fabíola
Merten, Gustavo Henrique
Mielniczuk, João
Tornquist, Carlos Gustavo
Oliveira, Elisandra Solange
dc.subject.por.fl_str_mv Nicotiana tabacum; soil organic carbon; geoprocessing; remote sensing
Nicotiana tabacum; carbono orgânico do solo; geoprocessamento; sensoriamento remoto
topic Nicotiana tabacum; soil organic carbon; geoprocessing; remote sensing
Nicotiana tabacum; carbono orgânico do solo; geoprocessamento; sensoriamento remoto
description The objective of this study was to combine the Century model with geoprocessing and remote sensing techniques, in order to evaluate spatial-temporal dynamics in total organic carbon (TOC). The study was carried out in a small rural watershed in Northeastern of Rio Grande do Sul State, Brazil. The area was initially under forest cover, which was progressively converted to agriculture in a period of 80 years. The proper calibrating of the model, especially in terms of TOC decomposition parameters, during the initial years of tillage, was essential to produce a coherent simulation of TOC values. Regarding the spatial distribution of TOC, it was observed that greatest impact of soil management on original contents occurred in the areas under cultivation since 1925, which showed a decline of 58.2% in TOC. The Century model integration with a geographic information system makes it possible the study of spatial-temporal dynamics of TOC and the performing of TOC distribution inventories.
publishDate 2008
dc.date.none.fl_str_mv 2008-08-27
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/332
url https://seer.sct.embrapa.br/index.php/pab/article/view/332
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/332/5452
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/332/241
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.43, n.6, jun. 2008; 745-753
Pesquisa Agropecuária Brasileira; v.43, n.6, jun. 2008; 745-753
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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