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Mapeo de la densidad de árboles a escala mundial
T W Crowther1, H B Glick1, K R Covey1
1Yale School of Forestry and Environmental Studies, Yale University, New Haven, Connecticut 06511, USA.
Nature
|September 3, 2015
Resumen
El número global de árboles forestales es de aproximadamente 3,04 billones, significativamente más alto que las estimaciones anteriores. La deforestación ha llevado a una disminución del 46% en el número de árboles desde que comenzó la civilización humana.
Área de la Ciencia:
- Ecología
- Sector forestal
- Ciencias del medio ambiente
Sus antecedentes:
- Comprender la distribución de los árboles del bosque es crucial para la investigación de la biosfera global.
- Las estimaciones anteriores del número global de árboles eran significativamente más bajas.
Objetivo del estudio:
- Para crear el primer mapa global espacialmente continuo de la densidad de árboles del bosque.
- Para proporcionar una estimación actualizada del número total de árboles en todo el mundo.
Principales métodos:
- Utilizó una combinación de datos basados en la verdad y modelado espacial.
- Datos integrados sobre el clima, la topografía y el impacto humano.
Principales resultados:
- Se estima que la población mundial de árboles es de aproximadamente 3,04 billones.
- Los bosques tropicales y subtropicales identificados como los que tienen la mayor densidad de árboles (1.39 billones).
- Descubrió que la actividad humana ha reducido drásticamente el número global de árboles en un 46% desde el comienzo de la civilización.
Conclusiones:
- El clima y la topografía influyen en la densidad de los árboles a escala local.
- El impacto humano es el factor dominante que afecta a las densidades de árboles a nivel mundial.
- Se estima que 15 mil millones de árboles se pierden anualmente debido a la deforestación.
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