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      SPATIAL AND VERTICAL DISTRIBUTION OF LITTER AND BELOWGROUND CARBON IN A BRAZILIAN CERRADO VEGETATION Translated title: DISTRIBUIÇÃO ESPACIAL E VERTICAL DO CARBONO EM SERAPILHEIRA E SUBSOLO EM VEGETAÇÃO DO CERRADO BRASILEIRO

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          Abstract

          ABSTRACT Forest ecosystems contribute significantly to store greenhouse gases. This paper aimed to investigate the spatial and vertical distribution of litter, roots, and soil carbon. We obtained biomass and carbon of compartments (litter, roots, and soil) in a vegetation from Cerrado biome, state of Minas Gerais, Brazil. The materials were collected in 7 0.5 m² sub-plots randomly allocated in the vegetation. Root and soil samples were taken from five soil layers across the 0-100 cm depth. Roots were classified into three diameter classes: fine (<5 mm), medium (5-10 mm), and coarse (>10 mm) roots. The carbon stock was mapped through geostatistical analysis. The results indicated averages of soil carbon stock of 208.5 Mg.ha-1 (94.6% of the total carbon), root carbon of 6.8 Mg.ha-1 (3.1%), and litter of 5 Mg.ha-1 (2.3%). The root carbon was majority stored in coarse roots (83%), followed by fine (10%), and medium roots (7%). The largest portion of fine roots concentrated in the 0-10 cm soil depth, whereas medium and coarse roots were majority in the 10-20 cm depth. The largest portion of soil (53%) and root (85%) carbon were stored in superficial soil layers (above 40 cm). As conclusion, the carbon spatial distribution follows a reasonable trend among the compartments. There is a vertical relation of which the deeper the soil layer, the lower the soil and root carbon stock. Excepting the shallowest layer, coarse roots held the largest portion of carbon across the evaluated soil layers.

          Translated abstract

          RESUMO Ecossistemas florestais contribuem significativamente para estocar gases do efeito estufa. Objetivou-se investigar a distribuição espacial e vertical do carbono em serapilheira, raízes e solo. Foram obtidos biomassa e carbono de compartimentos (serapilheira, raiz e solo) em vegetação do bioma Cerrado, Minas Gerais, Brasil. O material foi coletado em 7 sub-parcelas de 0,5 m² aleatoriamente alocadas na vegetação. As amostras de raízes e solo foram tiradas de cinco camadas do solo na profundidade de 0-100 cm. Raízes foram classificadas em três classes: raízes finas (<5 mm), médias (5-10 mm) e grossas (>10 mm). Estoques de carbono foram mapeados usando análise geoestatística. Resultados indicaram médias do estoque de carbono no solo de 208,5 Mg.ha-1 (94,6% do carbono total), carbono nas raízes de 6,8 Mg.ha-1 (3,1%), e na serapilheira de 5 Mg.ha-1 (2,3%). Carbono de raízes foi majoritariamente estocado nas raízes grossas (83%), seguido das finas (10%) e médias (7%). A maior porção das raízes finas se concentrou na camada de 0-10 cm, enquanto que raízes médias e grossas majoritariamente entre 10-20 cm. A maior porção do carbono em solo (53%) e raízes (85%) estiveram estocados nas camadas superficiais do solo (acima de 40 cm). Como conclusão, a distribuição espacial do carbono segue razoável tendência entre os compartimentos. Há uma relação vertical de que quanto mais profunda a camada de solo, menor o estoque de carbono de solo e raízes. Com exceção da camada de solo mais superficial, raízes grossas estocaram a maior porção de carbono nas profundidades avaliadas.

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          Field-Scale Variability of Soil Properties in Central Iowa Soils

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            Carbon stocks in Swiss agricultural soils predicted by land-use, soil characteristics, and altitude

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              Increased Litterfall Changes Fine Root Distribution in a Moist Tropical Forest

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cerne
                CERNE
                CERNE
                UFLA - Universidade Federal de Lavras (Lavras, MG, Brazil )
                0104-7760
                2317-6342
                March 2017
                : 23
                : 1
                : 43-52
                Affiliations
                [2] Lavras Minas Gerais orgnameUniversidade Federal de Lavras Brazil
                [1] Alta Floresta orgnameUniversidade Federal do Mato Grosso Brazil
                [3] Capitão Poço Pará orgnameUniversidade Federal do Pará Brazil
                [4] Seropédica Rio de Janeiro orgnameUniversidade Federal Rural do Rio de Janeiro Brazil
                Article
                S0104-77602017000100043
                10.1590/01047760201723012247
                cb75c7a4-d44c-49ce-a0ae-fe89cf0c56f8

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 06 October 2016
                : 20 December 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 51, Pages: 10
                Product

                SciELO Brazil


                Estoques de biomassa e carbono,Camadas do solo,Análise geoestatística,Dependência espacial,Biomass and carbon stocks,Soil layers,Geostatistical analysis,Spatial dependence

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