Labile soil organic carbon loss in response to land conversion in the Brazilian woodland savanna (cerradão)

Brito, Gisele Silveira de; Bautista, Susana; López-Poma, Rosário; Pivello, Vânia Regina

doi:10.1007/s10533-019-00570-9

Cited by 23 publications

(16 citation statements)

References 83 publications

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“…Estimates of C stocks in the Cerrado, especially belowground, are scarce and highly variable, across different Cerrado physiognomies and soil depths (Paiva and Faria 2007;Maquère et al 2008;Neto et al 2010;Fidelis et al 2013;Oliveras et al 2013;Brito et al 2019). Similarly, there are few estimates of N stocks in Cerrado ecosystems, which point to a much higher concentration in the rst 50 cm soil layer (Bustamante et al 2006;López-Poma et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Can an invasive African grass affect carbon and nitrogen stocks in open habitats of the Brazilian Cerrado?

Garcia

Xavier

Camargo

et al. 2022

Flora

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Section: Discussionmentioning

confidence: 99%

Can an invasive African grass affect carbon and nitrogen stocks in open habitats of the Brazilian Cerrado?

Garcia

Xavier

Camargo

et al. 2022

Flora

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“…C-labile stocks showed significant differences with changes in land use, with reduction in stocks with increasing soil depth (Figure 3). Brito et al (2019) evaluated CS-labile in response to land conversions in the Brazilian Cerrado after change in land use and found significant reductions in CS-labile, representing -16% in conversion to Pasture and -14% in conversion to Eucalyptus stands. The low soil C-labile levels may indicate low availability of organic material, generating low decomposition of organic residues.…”

Section: Discussionmentioning

confidence: 99%

Soil Carbon Stocks and Labile Fractions of Organic Matter Under Differents Vegetations Coverages in Gurupi – To

Marinho

Filho²,

Filho

et al. 2021

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ResumoEstoques de carbono no solo e frações lábeis da matéria orgânica sob diferentes coberturas vegetais em Gurupi -TO. Os solos representam um grande reservatório de carbono (C), de forma que as alterações no uso e manejo podem causar impactos no balanço do C, bem como no controle climático global. O estudo teve como objetivo determinar o efeito das mudanças de coberturas vegetais nos estoques de C do solo e frações lábeis no bioma Cerrado na região sul do Tocantins. O trabalho foi desenvolvido em áreas de Eucalyptus sp., pastagem, agricultura e Cerrado stricto sensu, localizadas na fazenda experimental da Universidade Federal do Tocantins. As amostras de solo foram coletadas em trincheiras de 70 x 70 cm nas profundidades 0-10, 10-20, 20-30, 30-40 e 40-50 cm, com seis repetições. A análise estatística foi realizada por meio do teste de normalidade, análise de variância e comparação das médias pelo teste Tukey a 5% de significância. A área com Eucalyptus sp. com 11 anos apresentou teores de carbono do solo superiores aos da vegetação de mata nativa, pastagem e agricultura. Os teores de carbono lábil (C-lábil) e matéria orgânica leve foram 26,80 e 41,58 % maiores para a área de Eucalyptus sp. em comparação com Mata Nativa, 25,75 e 35,76 % para a pastagem, e 48,39 e 9,50 % para a agricultura respectivamente. Dentre as diferentes áreas avaliadas, foi verificado que o Eucalyptus sp. possui grande potencial em aumentar o armazenamento de carbono no solo, C-lábil e matéria orgânica leve. Palavras-chave: mudança no uso do solo; Plintossolos; Cerrado

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Section: Discussionmentioning

confidence: 99%

Can an invasive African grass affect carbon and nitrogen stocks in open habitats of the Brazilian Cerrado?

Garcia

Xavier

Camargo

et al. 2021

Preprint

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Considering the emergence of ecosystems dominated by invasive species, there is growing interest in estimating the effect of biological invasions in ecosystem processes and provision of services. African grasses are the most invasive plants in the Cerrado (Brazilian savanna), but their impact on C and N stocks is poorly known. We compared patterns of C and N stocks in the aboveground biomass, root biomass and soil in open Cerrado (campo sujo) sites, both uninvaded and invaded by the African grass Urochloa decumbens. In both sites we estimated the aboveground biomass of U. decumbens and native grasses, as well as the root biomass up to 50 cm. We obtained C and N contents in the soil, as well as C and N stocks, up to 1 m depth, and variation in soil δ13C and δ15N. Although invasion did not affect the aboveground biomass, it did affect belowground biomass, leading to higher C stock in fine roots and soil N content close to soil surface, as well as higher C content along the soil profile. C and N soil stocks, soil δ13C and δ15N values did not significantly differ between invaded and uninvaded site. Even a relatively low level of invasion by U. decumbens changed the root distribution pattern and increased C and N contents in the upper soil, which may promote ecosystem changes by altering nutrient dynamics. Although still preliminary, our study shows that dominance by U. decumbens can have severe effects in the Cerrado belowground environment.

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Labile soil organic carbon loss in response to land conversion in the Brazilian woodland savanna (cerradão)

Cited by 23 publications

References 83 publications

Can an invasive African grass affect carbon and nitrogen stocks in open habitats of the Brazilian Cerrado?

Can an invasive African grass affect carbon and nitrogen stocks in open habitats of the Brazilian Cerrado?

Soil Carbon Stocks and Labile Fractions of Organic Matter Under Differents Vegetations Coverages in Gurupi – To

Can an invasive African grass affect carbon and nitrogen stocks in open habitats of the Brazilian Cerrado?

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