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El potencial global de restauración de árboles

Jean-Francois Bastin1, Yelena Finegold2, Claude Garcia3,4

  • 1Crowther Lab, Department of Environmental Systems Science, Institute of Integrative Biology, ETH-Zürich, Zürich, Switzerland. bastin.jf@gmail.com.

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La restauración global de árboles ofrece una poderosa solución al cambio climático, con el potencial de 0.9 mil millones de hectáreas de nueva cubierta de dosel que almacenan 205 gigatoneladas de carbono. Se necesitan medidas urgentes ya que el cambio climático amenaza con reducir este potencial para 2050.

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Área de la Ciencia:

  • Ciencias del medio ambiente
  • Mitigación del cambio climático
  • Ecología

Sus antecedentes:

  • La restauración de árboles es una estrategia clave para mitigar el cambio climático.
  • Comprender el potencial de cobertura arbórea global es crucial para una acción climática efectiva.
  • Se proyecta que los impactos del cambio climático alterarán la idoneidad futura de la tierra para los bosques.

Objetivo del estudio:

  • Mapear el potencial global para la expansión de la cobertura arbórea.
  • Cuantificar el potencial de secuestro de carbono de los bosques restaurados.
  • Evaluar el impacto del cambio climático en el potencial de cobertura arbórea futura.

Principales métodos:

  • Mapeo global de la cobertura arbórea potencial en las condiciones climáticas actuales.
  • Exclusión de las zonas forestales, agrícolas y urbanas existentes.
  • Modelación de la cobertura arbórea potencial en el futuro bajo escenarios proyectados de cambio climático.

Principales resultados:

  • Existe un potencial de 4.4 mil millones de hectáreas de cubierta de dosel global bajo el clima actual.
  • Se dispone de 0,9 mil millones de hectáreas adicionales para la restauración, con capacidad para almacenar 205 gigatoneladas de carbono.
  • El cambio climático puede reducir la cobertura global potencial de dosel en aproximadamente 223 millones de hectáreas para 2050, especialmente en los trópicos.

Conclusiones:

  • La restauración global de árboles presenta una solución significativa y efectiva para mitigar el cambio climático.
  • Es imperativo actuar de inmediato para aprovechar todo el potencial de la restauración de los árboles antes de que el cambio climático reduzca las áreas adecuadas.
  • Los hallazgos subrayan la doble oportunidad y urgencia de aprovechar la restauración de árboles para los objetivos climáticos.