Video Experimental Relacionado
Updated: Jun 9, 2025
03:42
Author Spotlight: Advancing Place-Based Biochar Production for Ecosystem Restoration and Soil Health
Published on: April 5, 2024
833
Los incendios de más rápido crecimiento y más destructivos en los Estados Unidos (2001 a 2020)
Jennifer K Balch1,2, Virginia Iglesias1,3, Adam L Mahood4
1Environmental Data Science Innovation and Inclusion Lab (ESIIL), University of Colorado Boulder, Boulder, CO, USA.
Science (New York, N.Y.)
|October 24, 2024
Resumen
Los incendios forestales de rápido movimiento son una gran amenaza, destruyendo el 78% de las estructuras y costando miles de millones. Comprender su rápido crecimiento es clave para mejorar el manejo de incendios forestales y la seguridad de la comunidad.
Área de la Ciencia:
- Ciencias del medio ambiente
- Detección remota
- Manejo de desastres
Sus antecedentes:
- Los incendios forestales representan amenazas significativas, con eventos destructivos y mortales a menudo caracterizados por una rápida propagación.
- Comprender la dinámica de los incendios forestales de rápido crecimiento es fundamental para una respuesta y mitigación efectivas.
Objetivo del estudio:
- Para analizar las tasas diarias de crecimiento de los incendios forestales en los Estados Unidos contiguos utilizando datos satelitales.
- Cuantificar el impacto de los incendios rápidos en las estructuras y los costos de supresión.
- Identificar las tendencias en las tasas de crecimiento de incendios forestales, particularmente en el oeste de los Estados Unidos.
Principales métodos:
- Utilizó datos satelitales para analizar las tasas de crecimiento diarias de más de 60,000 incendios forestales desde 2001 hasta 2020.
- Se definen como "fuegos rápidos" aquellos que crecen más de 1620 hectáreas en un solo día.
- Calculó el porcentaje de estructuras destruidas y los costos de supresión atribuidos a incendios rápidos.
Principales resultados:
- Casi la mitad de las ecorregiones estadounidenses experimentaron incendios destructivos rápidos.
- Los incendios rápidos representaron el 78% de las estructuras destruidas y el 61% de los costos totales de supresión (18.900 millones de dólares).
- La tasa promedio de crecimiento diario máximo de incendios rápidos se duplicó en el oeste de los Estados Unidos entre 2001 y 2020 (+ 249%).
Conclusiones:
- Los incendios forestales de rápido crecimiento son una amenaza significativa y creciente en los Estados Unidos, particularmente en el oeste.
- Estos incendios causan una destrucción desproporcionada y conllevan altos costos de supresión.
- Las estrategias de lucha contra incendios mejoradas y la preparación de la comunidad son esenciales para hacer frente al creciente desafío de los incendios rápidos.
Videos de Conceptos Relacionados
01:50Threats to Biodiversity
22.2K
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...
22.2K
02:26Ecological Disturbance
17.0K
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.
17.0K
01:50Global Climate Change
24.2K
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.
24.2K
02:31Habitat Fragmentation
17.4K
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.
17.4K
01:11Hazard Rate
91
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
91
01:22Burn Injuries
2.4K
Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
2.4K