Data/hora: 03/06/2024 05:24:23

Biblioteca(s): | Embrapa Amazônia Oriental.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 05/11/2014
Data da última atualização: | 18/10/2022
Autoria: | BERENGUER, E.; FERREIRA, J.; GARDNER, T. A.; ARAGÃO, L. E. O. C.; CAMARGO, P. B. de; CERRI, C. E.; DURIGAN, M.; OLIVEIRA JUNIOR, R. C. de; VIEIRA, I. C. G.; BARLOW, J.
Afiliação: | ERIKA BERENGUER, Lancaster University; JOICE NUNES FERREIRA, CPATU; TOBY ALAN GARDNER, University of Cambridge / International Institute for Sustainability / Stockholm Environment Institute; LUIZ EDUARDO OLIVEIRA CRUZ ARAGÃO, University of Exeter / INPE; PLÍNIO BARBOSA DE CAMARGO, CENA/USP; CARLOS EDUARDO CERRI, ESALQ/USP; MARIANA DURIGAN, ESALQ/USP; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; IMA CELIA GUIMARÃES VIEIRA, MPEG; JOS BARLOW, Lancaster University / MPEG.
Título: | A large-scale field assessment of carbon stocks in human-modified tropical forests.
Ano de publicação: | 2014
Fonte/Imprenta: | Global Change Biology, v. 20, n. 12, p. 3713-3726, 2014.
DOI: | 10.1111/gcb.12627
Idioma: | Inglês
Conteúdo: | Tropical rainforests store enormous amounts of carbon, the protection of which represents a vital component of efforts to mitigate global climate change. Currently, tropical forest conservation, science, policies, and climate mitigation actions focus predominantly on reducing carbon emissions from deforestation alone. However, every year vast areas of the humid tropics are disturbed by selective logging, understory &#64257;res, and habitat fragmentation. There is an urgent need to understand the effect of such disturbances on carbon stocks, and how stocks in disturbed forests compare to those found in undisturbed primary forests as well as in regenerating secondary forests. Here, we present the results of the largest &#64257;eld study to date on the impacts of human disturbances on above and belowground carbon stocks in tropical forests. Live vegetation, the largest carbon pool, was extremely sensitive to disturbance: forests that experienced both selective logging and understory &#64257;res stored, on average, 40% less aboveground carbon than undisturbed forests and were structurally similar to secondary forests. Edge effects also played an important role in explaining variability in aboveground carbon stocks of disturbed forests. Results indicate a potential rapid recovery of the dead wood and litter carbon pools, while soil stocks (0?30 cm) appeared to be resistant to the effects of logging and &#64257;re. Carbon loss and subsequent emissions due to human disturbances remain largely unaccounted for in greenhouse gas inventories, but by comparing our estimates of depleted carbon stocks in disturbed forests with Brazilian government assessments of the total forest area annually disturbed in the Amazon, we show that these emissions could represent up to 40% of the carbon loss from deforestation in the region. We conclude that conservation programs aiming to ensure the long-term permanence of forest carbon stocks, such as REDD+, will remain limited in their success unless they effectively avoid degradation as well as deforestation.
Thesagro: | Biomassa; Floresta Secundaria; Solo; Vegetação.
Thesaurus Nal: | Amazonia.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (50363-1) - UPC - AP - DV -  -  -  - DIS