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Ingreso atmosférico de dióxido de carbono de la quema de madera
Science (New York, N.Y.)
|April 14, 1978
Resumen
La quema de madera, especialmente los incendios forestales, contribuye significativamente al dióxido de carbono atmosférico (CO2). Este estudio cuantifica esta entrada, comparándola con las emisiones de combustibles fósiles y explorando la sedimentación marina como una estrategia de eliminación de CO2.
Área de la Ciencia:
- Ciencias ambientales Ciencias ambientales.
- Química de la atmósfera química de la atmósfera
- Investigación del Cambio Climático Investigación del Cambio Climático
Sus antecedentes:
- Los niveles atmosféricos de dióxido de carbono (CO2) son un factor crítico en el cambio climático.
- La quema de madera, incluidos los incendios forestales, es una fuente importante de CO2 atmosférico.
- La contribución de la quema de biomasa al ciclo global del carbono requiere una cuantificación precisa.
Objetivo del estudio:
- Para estimar el ingreso anual bruto y neto de dióxido de carbono atmosférico por la quema de madera.
- Para comparar las emisiones de CO2 de la quema de madera con las de los combustibles fósiles.
- Evaluar la relevancia de la sedimentación mejorada de detritos marinos como un mecanismo de eliminación de CO2.
Principales métodos:
- Estimación de las emisiones de CO2 basadas en los datos reportados de incendios forestales y cultivos cambiantes.
- Comparación de las entradas de CO2 de la quema de biomasa con los datos establecidos de emisiones de combustibles fósiles.
- Análisis del papel potencial de la sedimentación marina en la mitigación del CO2 atmosférico.
Principales resultados:
- La entrada de dióxido de carbono atmosférico bruto de la quema de madera se estima en 5,7 x 1015 gramos de carbono por año.
- La entrada neta de dióxido de carbono atmosférico de la quema de madera se estima en 1,5 x 10 ^ 15 gramos de carbono por año.
- Las emisiones de CO2 de la quema de biomasa son significativas en comparación con la producción de CO2 de los combustibles fósiles.
Conclusiones:
- La quema de madera representa una fuente sustancial de CO2 atmosférico, comparable a las emisiones de combustibles fósiles.
- Los hallazgos apoyan la investigación de la sedimentación marina como un mecanismo potencial para eliminar el exceso de CO2 atmosférico.
- La cuantificación precisa de las emisiones de la quema de biomasa es crucial para comprender el presupuesto global de carbono.
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