Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400251 |
Resumo: | ABSTRACT: It has become possible to evaluate the conversion of soil organic matter (SOM) in pastures and arboreal crops due to the difference between the photosynthetic cycles of Eucalyptus (C3) and most grasses (C4). The auto analyzer method coupled to the IRMS (Isotope Ratio Mass Spectrometer) in the present study evaluated the 13C content in soil profiles of Eucalyptus plantations of different ages (2, 10 and 21 years), in natural regeneration areas and natural grazing fields, and estimated the SOM conversion of each crop type of. The initial management of all sampled areas was natural pasture. The following profile layers were evaluated: 0-5, 5-10, 10-20, 20-30, 30-40, 40-50, 50-70 and 70-90cm, and the contribution of Eucalyptus biomass over the years of farming was estimated in the SOM conversion process. After 2 years of planting Eucalyptus, the beginning of pasture carbon conversion process occurred in the surface layer (0-5cm). Ten years after planting, the process of converting organic matter by arboreal crops reached the layers up to 20cm. After 21 years of planting and in natural regeneration areas, the entire profile has already been changed by planting Eucalyptus and native tree species. |
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Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversioncycle C3cycle C4Eucalyptus grandisABSTRACT: It has become possible to evaluate the conversion of soil organic matter (SOM) in pastures and arboreal crops due to the difference between the photosynthetic cycles of Eucalyptus (C3) and most grasses (C4). The auto analyzer method coupled to the IRMS (Isotope Ratio Mass Spectrometer) in the present study evaluated the 13C content in soil profiles of Eucalyptus plantations of different ages (2, 10 and 21 years), in natural regeneration areas and natural grazing fields, and estimated the SOM conversion of each crop type of. The initial management of all sampled areas was natural pasture. The following profile layers were evaluated: 0-5, 5-10, 10-20, 20-30, 30-40, 40-50, 50-70 and 70-90cm, and the contribution of Eucalyptus biomass over the years of farming was estimated in the SOM conversion process. After 2 years of planting Eucalyptus, the beginning of pasture carbon conversion process occurred in the surface layer (0-5cm). Ten years after planting, the process of converting organic matter by arboreal crops reached the layers up to 20cm. After 21 years of planting and in natural regeneration areas, the entire profile has already been changed by planting Eucalyptus and native tree species.Universidade Federal de Santa Maria2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400251Ciência Rural v.47 n.4 2017reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20150900info:eu-repo/semantics/openAccessSevero,Fabiane FigueiredoAita,Natália TobinMarques,Laila GarciaSilva,Leandro Souza daeng2017-03-03T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
title |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
spellingShingle |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion Severo,Fabiane Figueiredo cycle C3 cycle C4 Eucalyptus grandis |
title_short |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
title_full |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
title_fullStr |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
title_full_unstemmed |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
title_sort |
Isotopic abundance of 13 C and contribution of eucalyptus biomass to soil organic matter conversion |
author |
Severo,Fabiane Figueiredo |
author_facet |
Severo,Fabiane Figueiredo Aita,Natália Tobin Marques,Laila Garcia Silva,Leandro Souza da |
author_role |
author |
author2 |
Aita,Natália Tobin Marques,Laila Garcia Silva,Leandro Souza da |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Severo,Fabiane Figueiredo Aita,Natália Tobin Marques,Laila Garcia Silva,Leandro Souza da |
dc.subject.por.fl_str_mv |
cycle C3 cycle C4 Eucalyptus grandis |
topic |
cycle C3 cycle C4 Eucalyptus grandis |
description |
ABSTRACT: It has become possible to evaluate the conversion of soil organic matter (SOM) in pastures and arboreal crops due to the difference between the photosynthetic cycles of Eucalyptus (C3) and most grasses (C4). The auto analyzer method coupled to the IRMS (Isotope Ratio Mass Spectrometer) in the present study evaluated the 13C content in soil profiles of Eucalyptus plantations of different ages (2, 10 and 21 years), in natural regeneration areas and natural grazing fields, and estimated the SOM conversion of each crop type of. The initial management of all sampled areas was natural pasture. The following profile layers were evaluated: 0-5, 5-10, 10-20, 20-30, 30-40, 40-50, 50-70 and 70-90cm, and the contribution of Eucalyptus biomass over the years of farming was estimated in the SOM conversion process. After 2 years of planting Eucalyptus, the beginning of pasture carbon conversion process occurred in the surface layer (0-5cm). Ten years after planting, the process of converting organic matter by arboreal crops reached the layers up to 20cm. After 21 years of planting and in natural regeneration areas, the entire profile has already been changed by planting Eucalyptus and native tree species. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400251 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400251 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20150900 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.47 n.4 2017 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140551247069184 |