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Factores que controlan el secuestro a corto y largo plazo del CO2 atmosférico en un bosque de latitudes medias
C C Barford1, S C Wofsy, M L Goulden
1Division of Engineering and Applied Science and Department of Earth and Planetary Science, Harvard University, Cambridge, MA 02138, USA.
Science (New York, N.Y.)
|November 27, 2001
Resumen
Este estudio muestra que los bosques maduros secuestran una cantidad significativa de dióxido de carbono anualmente. El manejo forestal, teniendo en cuenta factores como la edad, puede mejorar esta vital capacidad de secuestro de carbono.
Área de la Ciencia:
- Ecología forestal ecología forestal.
- Los ciclos biogeoquímicos son ciclos biogeoquímicos.
- mitigación del cambio climático mitigación del cambio climático
Sus antecedentes:
- Los ecosistemas forestales juegan un papel crítico en el ciclo global del carbono.
- Comprender el secuestro de carbono en los bosques maduros es esencial para las estrategias de mitigación del cambio climático.
- Estudios anteriores han puesto de relieve la variabilidad en la absorción de carbono de los bosques.
Objetivo del estudio:
- Para cuantificar la absorción neta de dióxido de carbono en un bosque maduro utilizando la covarianza del remolino.
- Para validar las mediciones de covarianza de los remolinos con datos biométricos sobre el almacenamiento de carbono.
- Identificar los factores clave que influyen en el secuestro de carbono a escala decenal en los bosques.
Principales métodos:
- Utilizó la técnica de covarianza de remolinos para medir el intercambio neto de dióxido de carbono en el ecosistema.
- Empleó métodos biométricos para evaluar el almacenamiento de carbono en biomasa viva, desechos de madera gruesa y suelos.
- Se analizaron datos de 1993 a 2000, correlacionando la absorción de carbono con las características climáticas y forestales.
Principales resultados:
- La absorción neta de dióxido de carbono fue en promedio de 2.0 +/- 0.4 megagramos de carbono por hectárea por año.
- Las evaluaciones biométricas confirmaron el almacenamiento de carbono de 1,6 +/- 0,4 megagramos de carbono por hectárea por año.
- El clima estacional y la edad/composición de los bosques fueron identificados como los principales reguladores de la absorción de carbono.
Conclusiones:
- Los bosques maduros son importantes sumideros de carbono, lo que confirma los hallazgos de covarianza de remolinos con datos biométricos.
- El secuestro de carbono forestal está influenciado por el tiempo, el clima y los atributos históricos.
- Las prácticas de manejo forestal, particularmente aquellas que abordan la edad y la composición de la población, pueden optimizar el secuestro de carbono en los bosques orientales.
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