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No. de sistema: 000023266

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 010806c19999999nyu^r^p^^^^^^z0^^^z0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-cp
044 _ _ a| nyu
084 _ _ a| AR/631.47
b| L3
245 0 0 a| Land-use change and carbon flux between 1970s and 1990s in central highlands of Chiapas, Mexico
520 1 _ a| 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.
650 _ 4 a| Cambio de uso de la tierra
650 _ 4 a| Paisajes fragmentados
650 _ 4 a| Carbono
650 _ 4 a| Bosques
651 _ 4 a| Región Altos (Chiapas, México)
654 1 _ a| Forestry
654 1 _ a| Soil science
700 1 _ a| De Jong, Bernardus Hendricus Jozeph
700 1 _ a| Cairns, Michael A.
e| coaut.
700 1 _ a| Ramírez Marcial, Neptalí
d| 1963-
e| coaut.
700 1 _ a| Ochoa Gaona, Susana
c| Dra.
e| coaut.
700 1 _ a| Mendoza Vega, Jorge
e| coaut.
700 1 _ a| González Espinosa, Mario
d| 1950-
e| coaut.
700 1 _ a| March Mifsut, Ignacio José
e| coaut.
773 0 _
t| Environmental Management
g| Vol. 23, no. 3 (1999), p. 373-385
902 _ _ a| GOG / MM
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| CRIIS
905 _ _ a| Biblioelectrónica
LNG eng
Cerrar
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, 1963- (autor)
Ochoa Gaona, Susana (autor)
Mendoza Vega, Jorge (autor)
González Espinosa, Mario, 1950- (autor)
March Mifsut, Ignacio José (autor)
Clasificación: AR/631.47/L3
Contenido en: Environmental Management. Vol. 23, no. 3 (1999), p. 373-385.
Bibliotecas:
San Cristóbal , Villahermosa
No. de sistema: 23266
Tipo: Artículo
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Inglés

"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."

SIBE San Cristóbal
Codigo de barra
Estado
Colección
ECO010003767
(Disponible)
Artículos de investigación ECOSUR
ECO010003766
(Disponible)
Artículos de investigación ECOSUR
SIBE Villahermosa
Codigo de barra
Estado
Colección
VER000037
(Disponible)
Artículos de investigación ECOSUR