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Mapa de referencia de las emisiones de carbono de la deforestación en las regiones tropicales
Nancy L Harris1, Sandra Brown, Stephen C Hagen
1Ecosystem Services Unit, Winrock International, Arlington, VA 22202, USA. nharris@winrock.org
Science (New York, N.Y.)
|June 23, 2012
Resumen
Las estimaciones precisas de las emisiones de carbono de la deforestación son cruciales para la política. Este estudio utiliza datos satelitales para proporcionar emisiones de carbono de bosques tropicales estadísticamente limitadas, ofreciendo un punto de referencia más confiable para el monitoreo global.
Área de la Ciencia:
- Ciencias ambientales Ciencias ambientales.
- La teledetección es la sensorización remota.
- La investigación sobre el cambio climático investiga el cambio climático.
Sus antecedentes:
- Las políticas efectivas para mitigar las emisiones de deforestación requieren datos precisos sobre el impacto del carbono.
- Los métodos actuales a menudo se basan en suposiciones generales o datos poco confiables, lo que limita la precisión.
Objetivo del estudio:
- Desarrollar estimaciones estadísticamente limitadas y espacialmente explícitas de las emisiones de carbono de la deforestación tropical.
- Mejorar los métodos existentes mediante la integración de observaciones por satélite y datos detallados de las reservas de carbono.
Principales métodos:
- Utilizó observaciones satelitales para mapear la pérdida bruta de cobertura forestal en las regiones tropicales (2000-2005).
- Integrado un mapa de las reservas de carbono de los bosques con los datos de pérdida de bosques.
- Las emisiones brutas de carbono calculadas con intervalos de predicción estadísticamente limitados.
Principales resultados:
- Las emisiones anuales brutas de carbono estimadas de la deforestación tropical entre 2000-2005 en 0,81 petagramas de carbono.
- Proporcionó un intervalo de predicción del 90% de 0,57 a 1,22 petagramos de carbono por año.
- Los resultados son 25-50% más bajos que algunas estimaciones publicadas recientemente.
Conclusiones:
- Las estimaciones refinadas ofrecen un punto de referencia más preciso para el monitoreo de las emisiones de deforestación.
- Los datos mejorados apoyan políticas mejor informadas para reducir las emisiones de la deforestación.
- El emparejamiento sistemático de las áreas de pérdida de bosques con las reservas de carbono previas a la limpieza mejora las capacidades de monitoreo.
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