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Carbon flux and patterns of land-use/land-cover change in the Selva Lacandona, Mexico

Tipo de material: Artículo impreso(a) y electrónico Artículo impreso(a) y electrónico Idioma: Inglés Tipo de contenido:
  • texto
Tipo de medio:
  • sin medio
  • computadora
Tipo de soporte:
  • volumen
  • recurso en línea
Tema(s): Clasificación:
  • AR/631.47 C3
Recursos en línea: En: AMBIO Volumen 29, número 8 (diciembre 2000), páginas 504-511Resumen:
Inglés

Based on land-use/land-cover (LU/LC) maps for the 1970s and satellite imagery for the 1990s we estimate LU/LC change and associated C fluxes in 3 subregions of the Selva Lacandona, Chiapas, Mexico. The total area of closed forest was reduced by 31%, whereas secondary forests expanded more than ninefold, secondary shrubs by almost sixfold, and cultivated land and pasture areas expanded 21% and 92%, respectively. However, the LU/ LC change was not uniformly distributed over the entire study area. Total mean C densities ranged from 452 Mg C ha-1 for closed mature forests to a low of 120 Mg C ha-1 for pasture. The heavily converted areas lost an estimated 24% of their total 1976 C pools, whereas the low impacted region lost only 3%.

Número de sistema: 26767
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Artículos Biblioteca Campeche Artículos (AR) ECOSUR AR 631.47 C3 003 Disponible ECO040002471
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Based on land-use/land-cover (LU/LC) maps for the 1970s and satellite imagery for the 1990s we estimate LU/LC change and associated C fluxes in 3 subregions of the Selva Lacandona, Chiapas, Mexico. The total area of closed forest was reduced by 31%, whereas secondary forests expanded more than ninefold, secondary shrubs by almost sixfold, and cultivated land and pasture areas expanded 21% and 92%, respectively. However, the LU/ LC change was not uniformly distributed over the entire study area. Total mean C densities ranged from 452 Mg C ha-1 for closed mature forests to a low of 120 Mg C ha-1 for pasture. The heavily converted areas lost an estimated 24% of their total 1976 C pools, whereas the low impacted region lost only 3%. Inglés