El ciclo del carbono de los bosques tropicales y el cambio climático
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.Los bosques tropicales equilibran actualmente el ciclo global de carbono, pero pronto liberarán más carbono debido a la deforestación y el cambio climático, lo que obstaculiza los objetivos climáticos. Se necesitan mejores datos para políticas de conservación eficaces.
Área De La Ciencia
- Ciencias del medio ambiente
- Ciencias del clima
- Ecología
Sus Antecedentes
- Los bosques tropicales juegan un papel crucial en el ciclo global del carbono, actuando como un sumidero casi neutral en la actualidad.
- La deforestación y la degradación liberan carbono, mientras que el cambio climático afecta la capacidad de absorción de carbono de los bosques.
Objetivo Del Estudio
- Para resaltar el cambio proyectado de los bosques tropicales de un estado neutro en carbono a una fuente de carbono.
- Para subrayar las implicaciones de este cambio para los objetivos de calentamiento global.
- Identificar las limitaciones de datos que obstaculizan la acción política efectiva.
Principales Métodos
- Este estudio es una síntesis de los conocimientos y proyecciones actuales sobre la dinámica del carbono en los bosques tropicales.
- Analiza la interacción entre la deforestación, la degradación de los bosques, el cambio climático y el ciclo del carbono.
Principales Resultados
- Se prevé que los bosques tropicales se conviertan en una fuente neta de carbono en un futuro próximo.
- Esta transición exacerbará los desafíos para limitar el calentamiento global a 2°C.
- Los acuerdos internacionales actuales para detener la deforestación carecen de datos suficientes para el seguimiento y la aplicación de políticas.
Conclusiones
- Necesidad urgente de mejorar los sistemas de recogida y seguimiento de datos para los bosques tropicales.
- Las acciones políticas se ven obstaculizadas por una falta fundamental de datos para una conservación y una gestión efectivas del carbono.
- Abordar las lagunas de datos es fundamental para alcanzar los objetivos mundiales de mitigación del cambio climático.
Contact us Si estos videos no son relevantes.
Contact us Si estos videos no son relevantes.
Videos de Conceptos Relacionados
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
Past Periods of Warming and Cooling
In...
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
Biological Carbon Cycle
All...
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
Weather and Climate
Weather and climate are related, though they differ in terms of time scale and predictability. Weather refers to the state of the atmosphere at a specific time and place, whereas climate...
The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
Biogeochemical Cycles and Decomposition
The matter that makes up living organisms, like water, carbon, nitrogen, sulfur and phosphorous, exist in limited quantities within the...
Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...
Entropy is a state function, so the standard entropy change for a chemical reaction (ΔS°rxn) can be calculated from the difference in standard entropy between the products and the reactants.
where np and nr represent the stoichiometric coefficients in the balanced equation of the products and reactants, respectively.
For example, ΔS°rxn for the following reaction at room temperature
is computed as follows:
A partial listing of standard entropies is provided in the table.
...