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Patrones globales en el consumo humano de la producción primaria neta
Marc L Imhoff1, Lahouari Bounoua, Taylor Ricketts
1Biospheric Sciences Branch, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA. Marc.L.Imhoff@nasa.gov
Nature
|June 25, 2004
Resumen
Humanidad Humanidad Humanidad.
Área de la Ciencia:
- Ecología Ecología Ecología.
- Ciencias ambientales Ciencias ambientales.
- Ecología humana Ecología humana.
Sus antecedentes:
- El consumo humano tiene un impacto significativo en los ecosistemas de la Tierra.
- La apropiación humana de la producción primaria neta (HANPP) es una métrica clave para evaluar este impacto.
- HANPP afecta a la biodiversidad, la composición atmosférica y los servicios del ecosistema.
Objetivo del estudio:
- Para mapear la demanda y la oferta de la producción primaria neta (PCN) mundial.
- Para analizar la variación espacial de HANPP.
- Para entender la dependencia humana de las importaciones de energía nuclear.
Principales métodos:
- Mapeo global de las centrales nucleares requeridas por el hombre.
- Comparación de la demanda de energía nuclear humana con la demanda de energía nuclear generada por el paisaje.
- Derivación de un balance de oferta y demanda espacial de las centrales nucleares.
Principales resultados:
- La apropiación humana de la producción primaria neta varía ampliamente entre las regiones.
- Algunas áreas apropian significativamente más centrales nucleares que las producidas localmente.
- El análisis revela huellas de consumo global desiguales y dependencias de importación de las centrales nucleares.
Conclusiones:
- El consumo humano crea un impacto espacialmente desigual en los ecosistemas globales.
- Comprender la asignación de energía nuclear es crucial para la gestión sostenible de los recursos.
- Las intervenciones políticas pueden ayudar a mitigar futuros aumentos en HANPP.
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