Spatial interpolators for improving the mapping of carbon stock of the arboreal vegetation in Brazilian biomes of Atlantic forest and Savanna

Scolforo, Henrique Ferraço; Scolforo, José Roberto Soares; Mello, José Márcio de; Mello, Carlos Rogério de; Morais, Vinícius Augusto

doi:10.1016/j.foreco.2016.05.047

Cited by 37 publications

(27 citation statements)

References 29 publications

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“…The Ordinary Least Squares method was applied to fi t the models (MELLO et al, 2012;TERRA, 2015;SCOLFORO et al, 2016). The method known as ordinary kriging allowed us to estimate carbon stock in litter, roots, and soil for the unsampled areas across the vegetation (JOURNEL and HUIJBREGTS, 1978).…”

Section: Geostatistical Analysismentioning

confidence: 99%

“…In this sense geostatistical analysis, such as spatial interpolation technique, has been widely applied in cases involving carbon analysis in large dimension areas (CONSTANTINI et al, 2012;MISHRA et al, 2012;SCOLFORO et al, 2015;SCOLFORO et al, 2016). On the other hand, Morais (2014) detected high heterogeneity of carbon stock in soil, roots and litter in smaller areas, such as vegetation belonging to the Cerrado biome, in the state of Minas Gerais.…”

Section: Introductionmentioning

confidence: 99%

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Spatial and Vertical Distribution of Litter and Belowground Carbon in a Brazilian Cerrado Vegetation

Morais

Santos

Mello

et al. 2017

CERNE

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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. DISTRIBUIÇÃO ESPACIAL E VERTICAL DO CARBONO EM SERAPILHEIRA E SUBSOLO EM VEGETAÇÃO DO CERRADO BRASILEIRORESUMO: 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 ...

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Section: Geostatistical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial and Vertical Distribution of Litter and Belowground Carbon in a Brazilian Cerrado Vegetation

Morais

Santos

Mello

et al. 2017

CERNE

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“…Minas Gerais still accounts for approximately 35% of its total area covered by native vegetation (Scolforo et al, 2016), which is split into two major biomes: the Cerrado (Brazilian Savanna) that covers 62% of this area (121821 km 2 ) and Atlantic Forest, covering 38% (83464 km 2 ) (Scolforo et al, 2016;. With a regularly seasonal climate, generally welldrained acid soils, mainly Oxisols, Cambisols and Quartzarenic Neosol (Curi et al, 2008), the Cerrado vegetation is described by Oliveira Filho, et al (2006) and Scolforo et al (2008a) as Savanna Grassland (SG) which is formed by bushes, with ground-cover around 10% of the surface; Cerrado Stricto Sensu (CE), with greater density trees and shrubs and a higher occurrence in Minas Gerais, with ground-cover ranging from 10 to 60%; and Forest Savanna (FS), with ground-cover of 80%, and with a continuous canopy formation.…”

Section: Physiographic Characterization Of Minas Gerais State Brazilmentioning

confidence: 99%

“…Minas Gerais still retains about 35% of its area covered by native vegetation, from which, 62% is formed by Cerrado (Brazilian Savanna) and the other 38%, Atlantic Forest (Scolforo et al, 2016). The Cerrado occupies an area of 122147 km 2 , considering the different physiognomic variations, and has undergone extensive anthropic pressure (Rezende et al, 2006;Rufini et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of the litter carbon stock in the Cerrado biome in Minas Gerais state, Brazil

Morais

Mello

et al. 2017

Ciênc. agrotec.

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Litter corresponds to the layer of decomposing dead organic matter present on the soil surface. This layer is very important for nutrient cycling and contributes with organic matter accumulation in the soil, besides the carbon stock. The objective herein was to quantify the carbon biomass, both content and stock, and map the litter C-stock in the Cerrado biome, which is formed by Savanna Grassland (SG), Cerrado Stricto Sensu (CE) and Forest Savanna (FS), in Minas Gerais state, southeastern Brazil. The data were collected in 26 fragments in Minas Gerais state, totaling 210 sampling locations. A variographic study was conducted and, for mapping, the ordinary kriging method was used for delimitation of homogeneous zones. It was possible to detect high variability in the carbon biomass, carbon content and C-stock in the Cerrado biome litter in Minas Gerais state. The carbon content presented lower variability, ranging from 40 to 44%, so that it is not responsible for explaining the variability of the litter C-stock. Savanna Grassland and Savanna Forest present, respectively, the lowest and highest C-stocks. C-stock presented a considerable spatial structure dependence, allowing to use the geostatistical procedures for mapping it in the Cerrado biome of the Minas Gerais state. The C-stock kriging map showed good accuracy, allowing to verify that the lowest C-stocks in the litter are found from the center to the northern of the Minas Gerais since the highest air temperatures are also verified in this direction.Index terms: Climate change; Kriging; mapping procedures; accumulated biomass. RESUMOA serrapilheira corresponde à camada de matéria morta em decomposição presente sobre o solo. Esta camada é de grande importância na ciclagem de nutrientes e aporte de matéria orgânica sobre o solo, além de estocar carbono. Objetivou-se quantificar a biomassa, teor e estoque de carbono e espacializar o estoque de C da serrapilheira do Cerrado de Minas Gerais. Os dados foram coletados em 26 fragmentos de Cerrado no Estado de MG, totalizando 335 pontos amostrados em todo estado. Foi realizado o estudo variográfico e, para o mapeamento, utilizou-se a Krigagem, para delimitação de zonas homogêneas. Foi possível detectar alta variabilidade nas características avaliadas, biomassa, teor e estoque de carbono na serrapilheira do Cerrado em Minas Gerais, Brasil. O teor de C foi a característica que apresentou menor variabilidade, com intervalo de 40-44%, de modo que não é um atributo crítico para explicar o estoque de C na serrapilheira. O Campo Cerrado tem o mais baixo estoque de C, e o Cerradão o mais alto. O estoque de C apresenta considerável dependência da estrutura espacial, permitindo o uso de procedimentos geoestatísticos para mapeá-lo no bioma Cerrado do estado de Minas Gerais. O mapa de krigagem de estoque de C mostrou boa precisão e com base nele, foi possível verificar que os estoques de menor teor de carbono na serrapulheira são encontrados do centro para o norte do estado de Minas Gerais, onde temse as maiores tempera...

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“…O interpolador geoestatístico básico, que utiliza a técnica de AGRARIAN ACADEMY, Centro Científico Conhecer -Goiânia, v.4, n.7;p. 2017 337 interpolação espacial para realizar as estimativas, é denominado de krigagem (SCOLFORO et al, 2016). Esse método é constituído por um processo de estimativa de médias móveis de valores variáveis, distribuídas no espaço por meio de uma função semivariograma (YAMAMOTO & LANDIM, 2013).…”

Section: Introductionunclassified

MODELAGEM GEOESTATISTICA DOS SORTIMENTOS VOLUMETRICOS EM POVOAMENTOS DE Pinus sp.

Calixto¹,

Pelissari²,

Roveda³

et al. 2017

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Spatial interpolators for improving the mapping of carbon stock of the arboreal vegetation in Brazilian biomes of Atlantic forest and Savanna

Cited by 37 publications

References 29 publications

Spatial and Vertical Distribution of Litter and Belowground Carbon in a Brazilian Cerrado Vegetation

Spatial and Vertical Distribution of Litter and Belowground Carbon in a Brazilian Cerrado Vegetation

Spatial distribution of the litter carbon stock in the Cerrado biome in Minas Gerais state, Brazil

MODELAGEM GEOESTATISTICA DOS SORTIMENTOS VOLUMETRICOS EM POVOAMENTOS DE Pinus sp.

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