Land-use change and carbon flux between 1970s and 1990s in central highlands of Chiapas, Mexico
De Jong, Bernardus Hendricus Jozeph [autor] | Cairns, Michael A [autor] | Ramírez Marcial, Neptalí [autor] | Ochoa Gaona, Susana [autora] | Mendoza Vega, Jorge [autor] | González Espinosa, Mario [autor] | March Mifsut, Ignacio José [autor].
Tipo de material: Artículo impreso(a) Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Cambio de uso de la tierra | Paisajes fragmentados | Carbono | BosquesTema(s) en inglés: Forestry | Soil scienceDescriptor(es) geográficos: Región Altos (Chiapas, México) Clasificación: AR/631.47 / L3 Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Environmental Management. volumen 23, número 3 (1999), páginas 373-385Número de sistema: 23266Resumen:Tipo de ítem | Biblioteca actual | Colección | Signatura | Info Vol | Estado | Fecha de vencimiento | Código de barras |
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Biblioteca San Cristóbal
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ECOSUR | AR 631.47 L3 | 001 | Disponible | ECO010003766 | |
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Biblioteca San Cristóbal
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ECOSUR | AR 631.47 L3/EJ. 2 | 002 | Disponible | ECO010003767 | |
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Biblioteca Villahermosa
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ECOSUR | AR 631.47 L3 | 001 | Disponible | 660225CVER000037 |
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We present results of a study in an intensively impacted and highly fragmented landscape in which we apply field-measured carbon (C) density values to land-use/ land-cover (LU/LC) statistics to estimate the flux of C between terrestrial ecosystems and the atmosphere from the 1970s and 1990s. Carbon densities were assigned to common LU/LC classes on vegetation maps produced by Mexican governmental organizations and, by differencing areas and C pools, net C flux was calculated from the central highlands of Chiapas, Mexico, during a 16-year period. The total area of closed forests was reduced by half while degraded and fragmented forests expanded 56% and cultivated land and pasture areas increased by 8% and 30%, respectively. Total mean C densities ranged from a high of 504 tons C/ha in the oak and evergreen cloud forests class to a low of 147 tons C/ha in the pasture class. The differences in total C densities among the various LU/LC classes were due to changes in biomass while soil organic matter C remained similar. We estimate that a total of 19.99 3 106 tons C were released to the atmosphere during the period of time covered by our study, equal to approximately 34% of the 1975 vegetation C pool. The Chiapas highlands, while comprising just 0.3% of Mexico's surface area, contributed 3% of the net national C emissions. eng
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