Soil carbon and nitrogen stocks and the quality of soil organic matter under silvopastoral systems in the brazilian cerrado

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dc.creatorLuana Larrisa de Souza Almeida
dc.creatorLeidivan Almeida Frazão
dc.creatorTaynan Aquilles Marinho Lessa
dc.creatorLuiz Arnaldo Fernandes
dc.creatorÁlvaro Luiz de Carvalho Veloso
dc.creatorAngela Maria Quintão Lana
dc.creatorIgor Alexandre de Souza
dc.creatorRodinei Facco Pegoraro
dc.creatorEvander Alves Ferreira
dc.date.accessioned2023-04-18T17:42:45Z
dc.date.accessioned2025-09-09T01:20:42Z
dc.date.available2023-04-18T17:42:45Z
dc.date.issued2021
dc.identifier.doihttps://doi.org/10.1016/j.still.2020.104785
dc.identifier.issn0167-1987
dc.identifier.urihttps://hdl.handle.net/1843/52167
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofSoil and Tillage Research
dc.rightsAcesso Restrito
dc.subjectSolos
dc.subjectSolos - Teor de carbono
dc.subjectSolos - Teor de nitrogenio
dc.subjectCerrados
dc.subjectSistemas silviculturais
dc.subjectPastoril
dc.subject.otherCarbon dioxide
dc.subject.otherHumic fractions
dc.subject.otherIntegrated production systems
dc.subject.otherSoil microbial biomass
dc.titleSoil carbon and nitrogen stocks and the quality of soil organic matter under silvopastoral systems in the brazilian cerrado
dc.typeArtigo de periódico
local.citation.volume205
local.description.resumoThis study investigated soil carbon and nitrogen stocks and quality of soil organic matter in an Eutric Haplic Cambisol four years after the conversion of degraded pastures into silvopastoral systems in the Brazilian Cerrado. The integrated production systems were composed of marandu grass (Urochloa brizanta) and Eucalyptus cloeziana or Eucalyptus urograndis. These systems were compared with areas of regenerating stratum and native vegetation of the Cerrado biome. A randomized statistical design was used, and soil chemical and biological attributes and soil CO2 efflux were evaluated (p < 0.05). After four years of implantation, soil carbon and nitrogen stocks increased in silvopastoral systems in relation to regeneration stratum, but were still lower than those in native vegetation. The chemical and granulometric soil fractionations indicated that carbon was protected in the most stable soil organic matter fractions (humin and silt + clay). There was an increase in soil microbial carbon during the rainy season and the metabolic quotient during the dry period. The deposition of plant material and soil tillage in silvopastoral systems composed of marandu grass (Urochloa) and Eucalyptus cloeziana contributed to an increase in soil microbial carbon at the 10–20 cm soil layer. The soil CO2 efflux, during the rainy and dry seasons, was similar between both silvopastoral systems and native vegetation, probably indicating greater diversity of organisms and roots in these systems than in regeneration stratum. We conclude that the introduction of integrated systems improved soil quality, allowing greater protection of soil organic matter.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0167198720305675

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