Carbon and nitrogen stock and fluxes in coastal Atlantic Forest of southeast Brazil: potential impacts of climate change on biogeochemical functioning

Villela, Dora Maria; Mattos, EA de; Pinto, Alexandre de Siqueira; Vieira, Simone A.; Martinelli, Luiz Antônio

doi:10.1590/s1519-69842012000400003

Cited by 19 publications

(15 citation statements)

References 72 publications

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“…Depending on the successional stages and management interventions, the forests can act as a source and/or a sink of C (Masera et al 2003 , which is found to be 23% less than in BRF in the same ecoregion due to differences in dbh and height of the tree species. Forest C stock is also found to increase with increases in elevation, mainly due to fine root area, fine root length growth, and decreases in temperature (Jobbagy & Jackson 2000;Amundson 2003;Villela et al 2012;Girardin et al 2013). The TCD (16.65 million ton) of the BRF is calculated by multiplying (average TCD per hectare) with its total catchment area (40,062 ha).…”

Section: Resultsmentioning

confidence: 99%

Estimation of carbon stocks of Balganga Reserved Forest, Uttarakhand, India

Kumar

Sharma

2015

Forest Science and Technology

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Forest carbon (C) stock estimation was carried out for tree species of Balganga Reserved Forest (BRF) in district Tehri Garhwal, Uttarakhand, India. The highest total biomass density (TBD) and total carbon density (TCD) were estimated at site III in the altitudinal range of 1800À2600 m as 108.26 and 53.45 MgÁha ¡1 followed by site II in the range of 1600À1800 m as 83.92 and 41.96 MgÁha ¡1 , and the least at site I in the altitudinal range of 1000À1400 m as 57.22 and 28.61 MgÁha ¡1 with an average of 83.13 and 41.56 MgÁha ¡1 , respectively. The study found average TBD and TCD of the BRF are 23% more when compared to forests located in the same ecoregion due to difference in diameter at breast height and height of tree species. It also found that the C stock increases with increasing altitude due to fine root area, fine root length growth, and decreasing temperature. The BRF was found to have 16.65 million tons of forest organic C stocks in the year 2014. Accordingly, the C transported to the reservoir from the catchment undergoes aerobic/anaerobic degradation to release greenhouse gases to atmosphere. The study also reveals that oak, devdar, and fir have greater C sequestration capacity compared to other species found in BRF.

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Section: Resultsmentioning

confidence: 99%

Estimation of carbon stocks of Balganga Reserved Forest, Uttarakhand, India

Kumar

Sharma

2015

Forest Science and Technology

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“…The C stock varied greatly between sites: soil under passion fruit cultivation showed a C stock of 162.64 Mg ha −1 , whereas soil under Eucalyptus plantation had a C stock of 284.69 Mg ha −1 . These values are higher than those reported in previous studies for soils subjected to different uses in low-altitude regions 6/9 Fontana A, Pereira MG, Balieiro FC, Chagas CS, Donagemma GK, Oliveira LS Floresta e Ambiente 2020; 27(1): e20190091 (Vieira et al, 2011;Villela et al, 2012;Coutinho et al, 2014;Martins et al, 2015). The C stock changes in the humic A horizon can be a result of several factors, including inherent characteristics related to the formation of the soil, as well as past and present land use and management practices-from wood harvesting since colonization and coffee and cattle production days to modern times.…”

Section: /9mentioning

confidence: 72%

Resistance of Soil Organic Matter in “Humic A Horizons” of the Mountainous Region in the State of Rio De Janeiro

et al. 2020

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Soils with high organic carbon content, such as those with "humic A horizon", occur in different regions of Brazil. This study aimed to determine the quantitative and qualitative characteristics of organic matter regarding the humic A horizon under different land uses in Bom Jardim, in Rio de Janeiro State, Brazil. Samples from forest, pasture, Eucalyptus plantation, coffee cultivation, olericulture, and also passion fruit soils were sampled and analyzed. In October 2011, undisturbed samples from humic A horizons, were collected for soil density analysis. In addition, disturbed samples were collected for the determination of organic carbon (C org) content, total carbon, humic substance fractions contents and natural abundance of 13 Carbon (δ 13 C). Low C org contents were observed in areas under olericulture, pasture and passion fruit cultivation. The fulvic acid fraction was higher than other fractions, regardless of land use. The small variability in δ 13 C indicated maintenance of original C org and suggest high resistance of Soil Organic Matter in humic A horizons.

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“…Consequentemente, estimativas apontam que o estoque de carbono nesse compartimento aumentou aproximadamente 50 Mg ha -1 ao se compararem as altitudes de 100 e 1000 m (VILLELA et al, 2012). Tal resultado parece ser influenciado pela ocorrência de elevada precipitação pluviométrica, cuja distribuição ao longo do ano é mais homogênea, o que favorece o crescimento florestal (ROSENFIELD;SOUZA, 2014).…”

Section: Discussionunclassified

“…Embora Scaranello et al (2012) tenham verificado o incremento da biomassa viva aérea com o aumento da altitude para árvores com DAP > 30 cm, o aumento da biomassa com o aumento da altitude não foi observado para árvores com DAP > 100 cm. Sob elevadas altitudes, principalmente a partir de 1500 m acima do nível do mar (VILLELA et al, 2012), o menor crescimento de Floresta Atlântica ocorre em função da diminuição da incidência da radiação solar pela formação de nuvens espessas e densa neblina, o que ocasiona menores valores de temperatura do ar e menor disponibilidade de nitrogênio e fósforo no solo para as plantas.…”

Section: Discussionunclassified

“…Os teores de carbono na biomassa verde ou fresca variam conforme a espécie florestal (WATZLAWICK et al, 2014) e raramente ultrapassam 50% (DALLAGNOL et al, 2011). Por não ter sido possível obter a real porcentagem de carbono contido na biomassa das espécies nas áreas estudadas, consideramos, de maneira genérica, que o teor desse elemento na biomassa das plantas foi igual a aproximadamente 50% da matéria de massa seca (TIEPOLO et al, 2002 A biomassa morta acima do solo também foi avaliada, por meio de coleta da camada de serapilheira disposta sobre a superfície do solo e circunscrita em um gabarito quadrado de madeira com as dimensões de 1 x 1 m (1 m 2 ).…”

Section: Methodsunclassified

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Estoque De Carbono Em Áreas De Restauração Florestal Da Mata Atlântica

Azevedo

Camara

Francelino³

et al. 2018

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ResumoEcossistemas florestais são importantes no processo de estocagem de carbono da atmosfera. Áreas de reflorestamentos podem contribuir de maneira substancial nesse processo e diminuir a pressão extrativista sobre florestas nativas. Este trabalho objetivou avaliar a biomassa acima do solo viva (por meio do método não-destrutivo -equações alométricas) e morta (serapilheira) e o estoque de carbono nesses compartimentos em áreas de reflorestamento com diferentes idades (3, 5 e 7 anos) e em área de Floresta Ombrófila Densa (testemunha), localizadas no município de Cachoeiras de Macacu (RJ). Foram alocadas 30 parcelas (10 x 10 m cada) na área testemunha e 20 parcelas (20 x 30 m cada) nas áreas de reflorestamento. Os indivíduos arbóreos foram identificados, e a altura total, circunferência e diâmetro à altura do peito foram medidos. A serapilheira foi coletada com gabarito quadrado (1 x 1 m) em cinco repetições em cada área. Os valores de biomassa acima do solo e carbono estocado aumentaram à medida que a idade dos plantios de restauração florestal avançou. Os modelos alométricos utilizados foram adequados no estudo. Contudo, é necessário testar a confiabilidade dos dados com a utilização do método destrutivo nas áreas reflorestadas. Palavras-chave: Sequestro de carbono, restauração florestal, biomassa acima do solo, serapilheira. AbstractCarbon stock in forest restoration areas of the Atlantic Forest. Forest ecosystems are important in the process of storing carbon from the atmosphere. Reforestation areas can contribute substantially in this process and reduce the extractive pressure over native forests. This study aimed to assess the aboveground live biomass (by non-destructive method -allometric equations) and dead biomass (litter layer standing stock) and carbon stock in these compartments at areas of reforestation of different ages (3, 5, and 7 years old) and at a Dense Ombrophylous Forest (control) area, located in the municipality of Cachoeiras de Macacu (state of Rio de Janeiro, Brazil). We allocated 30 plots (10 x 10 m each) in the control area and 20 plots (20 x 30 m each) in the reforestation areas. Tree individuals were identified, and total height, circumference, and diameter at breast height were measured. The litter standing stock was collected by square gauge (1 x 1 m) in five replicates at each area. The values of aboveground biomass and stored carbon increased as the age of forest restoration plantings advanced. The allometric models used were adequate in the study. However, it is necessary to test the reliability of the data, using the destructive method in the reforested areas.

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Carbon and nitrogen stock and fluxes in coastal Atlantic Forest of southeast Brazil: potential impacts of climate change on biogeochemical functioning

Cited by 19 publications

References 72 publications

Estimation of carbon stocks of Balganga Reserved Forest, Uttarakhand, India

Estimation of carbon stocks of Balganga Reserved Forest, Uttarakhand, India

Resistance of Soil Organic Matter in “Humic A Horizons” of the Mountainous Region in the State of Rio De Janeiro

Estoque De Carbono Em Áreas De Restauração Florestal Da Mata Atlântica

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