评论"亚马逊森林的火灾发生率与对REDD的影响"
Jennifer K Balch1, Daniel C Nepstad, Paulo M Brando
1Amazon Environmental Research Institute (IPAM), Brasília, DF 71.503-505, Brazil. balch@nceas.ucsb.edu
概括
农业边界的火灾正在增加,导致无法计数的碳排放. 目前联合国气候条约对森林退化的估计,不包括燃烧的树林.
科学领域:
- 环境科学 环境科学
- 气候科学 气候科学
- 林业 林业 林业 林业 林业
背景情况:
- 农业边界正经历着火灾发生率的增加,即使森林砍伐率在下降.
- 根据联合国气候条约的森林退化组成部分,现有的碳排放估计可能不完整.
- 该研究解决了观察到的火灾趋势和当前的碳核算方法之间的差异.
研究的目的:
- 分析火灾发生与森林砍伐之间的关系.
- 评估火灾对碳排放的影响.
- 评估当前对森林退化碳核算的准确性.
主要方法:
- 分析农业边境地区的火灾数据.
- 火灾趋势与森林砍伐趋势的比较.
- 根据联合国气候条约,审查碳排放估计方法.
主要成果:
- 农业边境的火灾发生率有所增加.
- 这种增长与森林砍伐的减少同时发生.
- 燃烧现存森林有助于未计数的碳排放.
结论:
- 农业边界火灾的增加是未计数的碳排放的重要来源.
- 目前的联合国气候条约对热带森林砍伐和森林退化进行了解释,需要改进以包括现存的森林燃烧.
- 政策和监测应涉及农业边界的火灾管理,以改善减缓气候变化的努力.
相关概念视频
Habitat Fragmentation
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.
Threats to Biodiversity
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...
Burn Injuries
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...
Responses to Drought and Flooding
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
Ecological Disturbance
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.Ecological disturbances can be caused by an event as small as the trampling of underbrush to an incident as wide-ranging as a forest...
Adaptations that Reduce Water Loss
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.

