Nitrous oxide emissions in silvopastoral systems: Key driving variables and seasonality

Página do item simplificado
dc.contributor.authorCardoso, Abmael da Silva [UNESP]
dc.contributor.authorAlari, Fernando de Oliveira [UNESP]
dc.contributor.authorde Andrade, Nomaiací [UNESP]
dc.contributor.authorNascimento, Tiago da Silva [UNESP]
dc.contributor.authorvan Cleef, Flavia de Oliveira Scarpino
dc.contributor.authorAlves, Bruno José Rodrigues
dc.contributor.authorRuggieri, Ana Cláudia [UNESP]
dc.contributor.authorMalheiros, Euclides Braga [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversity of Florida
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2022-05-01T13:11:37Z
dc.date.available2022-05-01T13:11:37Z
dc.date.issued2022-04-01
dc.description.abstractSilvopastoral systems are suggested to be important strategies for mitigating greenhouse gas emissions. However, little information is available on the effects of these systems on soil nitrous oxide (N2O) production. Expanding the knowledge of N2O emissions and the responses of key variables that drive N2O production are essential for understanding nitrogen loss. To quantify these factors in the silvopastoral system (Eucalyptus grandis × Megathyrsus maximus) and the monoculture (Megathyrsus maximus Guinea Massai grass), we conducted a 4-year field assessment. The experimental design was a completely randomized block with two factors: (1) monoculture (MONO) and silvopastoral systems with tree rows of 12 m (SP1) and 6 m (SP2), and (2) two seasons (rainy and dry), with 5 repetitions. Emissions were quantified using the closed static chamber methodology and gas chromatography analysis. In the wet summer, the silvopasture system differed from MONO, while in the dry winter, only the SP1 group differed from the monoculture; N2O emissions were higher during the rainy season. The MONO treatment revealed larger N2O fluxes in the first year of evaluation, whereas the silvopasture systems peaked in a later year. A significant positive Pearson correlation was found between N2O fluxes and soil moisture (r=0.89; P < 0.001) and soil temperature (r=0.76; P< 0.01). Our study showed that the effect of the silvopastoral system was season-dependent. N2O emissions increased over the years in silvopastoral systems, as opposed to the monoculture, and were driven by soil moisture and temperature.en
dc.description.affiliationDepartament of Animal Science College of Agricultural and Veterinarian Science São Paulo State University Via de Acesso Professor Paulo Donato Castelane Castellane S/N Vila Industrial
dc.description.affiliationDepartament of Exactal Ciences and Engineer College of Agricultural and Veterinarian Science São Paulo State University Via de Acesso Professor Paulo Donato Castelane Castellane S/N Vila Industrial
dc.description.affiliationDepartment of Agronomy Institute of Food and Agricultural Sciences University of Florida
dc.description.affiliationEmbrapa Agrobiologia, Rodovia BR-465, Km, 7
dc.description.affiliationUnespDepartament of Animal Science College of Agricultural and Veterinarian Science São Paulo State University Via de Acesso Professor Paulo Donato Castelane Castellane S/N Vila Industrial
dc.description.affiliationUnespDepartament of Exactal Ciences and Engineer College of Agricultural and Veterinarian Science São Paulo State University Via de Acesso Professor Paulo Donato Castelane Castellane S/N Vila Industrial
dc.identifierhttp://dx.doi.org/10.1016/j.agrformet.2022.108851
dc.identifier.citationAgricultural and Forest Meteorology, v. 316.
dc.identifier.doi10.1016/j.agrformet.2022.108851
dc.identifier.issn0168-1923
dc.identifier.scopus2-s2.0-85123865704
dc.identifier.urihttp://hdl.handle.net/11449/234081
dc.language.isoeng
dc.relation.ispartofAgricultural and Forest Meteorology
dc.sourceScopus
dc.subjectGreenhouse gas emission
dc.subjectmixed pasture
dc.subjectN loss
dc.subjectN2O driving variable
dc.subjectN2O seasonality
dc.titleNitrous oxide emissions in silvopastoral systems: Key driving variables and seasonalityen
dc.typeArtigo

Arquivos

Coleções

Artigos - Zootecnia - FCAV
Artigos - Ciências Exatas - FCAV