Video Experimental Relacionado
Updated: Dec 9, 2025
08:16
Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
Published on: October 24, 2025
237
La degradación forestal a largo plazo supera la deforestación en la Amazonía brasileña
Eraldo Aparecido Trondoli Matricardi1, David Lewis Skole2, Olívia Bueno Costa3
1Department of Forestry, University of Brasilia, Campus Darcy Ribeiro, Brasília 70.900-910, Brazil. ematricardi@gmail.com skole@msu.edu.
Science (New York, N.Y.)
|September 11, 2020
Resumen
La degradación de los bosques en la Amazonía brasileña, una importante brecha de datos, ahora afecta a más áreas que la deforestación. Este estudio cuantifica esta perturbación desde 1992 hasta 2014.
Área de la Ciencia:
- Ciencias del medio ambiente
- Sector forestal
- La teledetección
Sus antecedentes:
- La deforestación en la Amazonía brasileña está bien documentada.
- La extensión de la degradación forestal sigue siendo una brecha de datos significativa.
- La degradación tiene implicaciones críticas para la conservación, el ciclo del carbono y la política.
Objetivo del estudio:
- Proporcionar una evaluación cuantificada a largo plazo de la degradación forestal en la Amazonía brasileña.
- Medir y mapear toda la gama de actividades de degradación forestal.
- Evaluar la relación entre la degradación forestal y la deforestación.
Principales métodos:
- Se utilizaron datos de teledetección para evaluar la degradación del bosque.
- La degradación cuantificada en toda la Amazonía brasileña.
- Mapa de la degradación desde 1992 hasta 2014.
Principales resultados:
- El área total de bosques degradados fue de 337.427 km2 entre 1992 y 2014.
- El área de bosque degradado excedió el área deforestada (308.311 km2).
- La degradación de los bosques es una forma creciente de perturbación de los bosques.
Conclusiones:
- La degradación de los bosques es un problema sustancial y creciente en la Amazonía brasileña.
- El área afectada por la degradación es ahora mayor que la de la deforestación.
- Los hallazgos ponen de relieve la necesidad de estrategias de conservación que aborden la degradación.
Videos de Conceptos Relacionados
01:50Threats to Biodiversity
26.2K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
26.2K
02:31Habitat Fragmentation
20.7K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
20.7K
02:26Ecological Disturbance
20.3K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
20.3K
02:07Conservation of Declining Populations
12.3K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
12.3K
01:23Lumber Defects
387
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
387
02:17Ecological Succession
21.0K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.0K