Seasonal fluctuation of soil carbon dioxide emission in differently managed pastures

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dc.contributor.authorBrito, Liziane de Figueiredo [UNESP]
dc.contributor.authorAzenha, Mariana Vieira [UNESP]
dc.contributor.authorJanusckiewicz, Estella Rosseto [UNESP]
dc.contributor.authorCardoso, Abmael da Silva [UNESP]
dc.contributor.authorMorgado, Eliane da Silva [UNESP]
dc.contributor.authorMalheiros, Euclides Braga [UNESP]
dc.contributor.authorLa Scala, Newton [UNESP]
dc.contributor.authorReis, Ricardo Andrade [UNESP]
dc.contributor.authorRuggieri, Ana Claudia [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-10-21T20:39:31Z
dc.date.available2015-10-21T20:39:31Z
dc.date.issued2015-05-01
dc.description.abstractSoil carbon dioxide emission (ECO2) is a process determined by biotic and abiotic factors influenced by land use and management practices. In grassland ecosystems, grazing intensity may affect C input from plants into soil, and thus may also change soil respiration rate. Indeed, limited information is available regarding the effects of grazing management on ECO2. This study was conducted to evaluate ECO2 seasonal variation, and its relationship to soil temperature (Tsoil) and precipitation, in an area with different pasture heights of Marandu palisade grass [Brachiaria brizantha (A. Rich.) Stapf.]. The pasture heights (15, 25, and 35 cm) were distributed in a completely randomized design with 12 repetitions in each area. The evaluations of ECO2 and Tsoil occurred from January 2011 to February 2013, totaling 73 d of observation that were distributed according to climatic seasons. The results showed that seasonal variation of ECO2 was directly related to variations in precipitation and Tsoil. Soil CO2 emission was higher in summer and lower in winter. The data variability of ECO2 was higher in rainy, hot summers than in dry, cold winters. A positive linear association between ECO2 and Tsoil was observed in summer and autumn. In most seasons measured, ECO2 reduced with increasing pasture height. Accordingly, 2-yr data indicated that accumulated ECO2 decreased with increasing pasture height. Thus to better understand the effect of pasture height on ECO2, a shorter period of measurements is not suitable since a different result was observed in the first year of evaluation.en
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Ciências Exatas, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent957-962
dc.identifierhttps://dl.sciencesocieties.org/publications/aj/abstracts/107/3/957
dc.identifier.citationAgronomy Journal. Madison: Amer Soc Agronomy, v. 107, n. 3, p. 957-962, 2015.
dc.identifier.doi10.2134/agronj14.0480
dc.identifier.issn0002-1962
dc.identifier.lattes4726596193949022
dc.identifier.lattes1449605928537533
dc.identifier.lattes8605438226392855
dc.identifier.urihttp://hdl.handle.net/11449/129236
dc.identifier.wosWOS:000354182600016
dc.language.isoeng
dc.publisherAmer Soc Agronomy
dc.relation.ispartofAgronomy Journal
dc.relation.ispartofjcr1.897
dc.relation.ispartofsjr0,938
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleSeasonal fluctuation of soil carbon dioxide emission in differently managed pasturesen
dc.typeArtigo
dcterms.licensehttps://dl.sciencesocieties.org/publications/permissions
dcterms.rightsHolderAmer Soc Agronomy
unesp.author.lattes4726596193949022
unesp.author.lattes1449605928537533
unesp.author.lattes8605438226392855
unesp.author.lattes6555511233950866[9]
unesp.author.orcid0000-0002-4709-3094[8]
unesp.author.orcid0000-0002-1575-9875[7]
unesp.author.orcid0000-0003-4179-0064[6]
unesp.author.orcid0000-0002-9646-8489[9]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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Artigos - Zootecnia - FCAV
Artigos - Ciências Exatas - FCAV