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Carbon stocks and accumulation rates in tropical secondary forests at the scale of community, landscape and forest type

Tipo de material: Artículo impreso(a) Artículo impreso(a) Idioma: Inglés Tipo de contenido:
  • Texto
Tipo de medio:
  • Computadora
Tipo de soporte:
  • Recurso en línea
Tema(s) en español: En: Agriculture, Ecosystems & Environment volumen 171 (May 2013), páginas 72-84Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso Resumen:
Inglés

Rapid increases of secondary forest areas in the tropics make understanding of their carbon dynamics critical to estimate net CO2 emissions and uptake. This understanding is needed for performance based mechanisms that aim to halt global warming (REDD+). Despite the importance of secondary forests to global C cycling, the impacts of recovering secondary vegetation on C dynamics are poorly understood. We present carbon stocks and accumulation rates in biomass and soil pools, using as a basis of analysis 87 sampling plots established along a secondary forest chronosequence derived from shifting cultivation. We test the influence of age, land-use intensity (prior land-use history) and two site quality indices on the size of the C stocks and C accumulation rates. Biomass and Total C pools were positively correlated with age and negatively with LU intensity, whereas C accumulation rates had opposite signs for both parameters. Soil C did not show any variation along the age gradient, but C in the upper 20 cm was positively correlated to both site quality indices. The LU-intensity influenced the tree C stock in the younger plots. We propose a nested approach in which detailed studies can be up-scaled to landscape and regional estimates of carbon pools in forest fallow and undisturbed forests and carbon accumulation rates in forest fallow.

Número de sistema: 35664
Lista(s) en las que aparece este ítem: ASA-Campeche
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Artículos Biblioteca Campeche Artículos Hemeroteca (AR HM) ECOSUR 001 Disponible 640702C35664-10
Artículos Biblioteca Electrónica Recursos en línea (RE) ECOSUR Recurso digital ECO400356644444

Disponible para usuarios de ECOSUR con su clave de acceso

Rapid increases of secondary forest areas in the tropics make understanding of their carbon dynamics critical to estimate net CO2 emissions and uptake. This understanding is needed for performance based mechanisms that aim to halt global warming (REDD+). Despite the importance of secondary forests to global C cycling, the impacts of recovering secondary vegetation on C dynamics are poorly understood. We present carbon stocks and accumulation rates in biomass and soil pools, using as a basis of analysis 87 sampling plots established along a secondary forest chronosequence derived from shifting cultivation. We test the influence of age, land-use intensity (prior land-use history) and two site quality indices on the size of the C stocks and C accumulation rates. Biomass and Total C pools were positively correlated with age and negatively with LU intensity, whereas C accumulation rates had opposite signs for both parameters. Soil C did not show any variation along the age gradient, but C in the upper 20 cm was positively correlated to both site quality indices. The LU-intensity influenced the tree C stock in the younger plots. We propose a nested approach in which detailed studies can be up-scaled to landscape and regional estimates of carbon pools in forest fallow and undisturbed forests and carbon accumulation rates in forest fallow. Inglés

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