温暖的气候威胁着亚马逊盆地巨型树的出现
Robson Borges de Lima1, Cinthia Pereira de Oliveira1, Diego Armando S da Silva2
1Laboratório de Manejo Florestal, Universidade Do Estado Do Amapá, 68901-262, Macapá, AP, Brazil.
Journal of environmental management
|January 16, 2026
概括
由于气候变化,亚马逊大树面临息地丧失. 保护工作至关重要,因为一个高排放的场景可能会在2080年减少45%的适合息地.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 森林科学 森林科学 森林科学
背景情况:
- 巨大的树木是亚马逊的重要碳汇和生态系统支柱.
- 气候变化对这些新兴巨人的分布和生态构成重大威胁.
研究的目的:
- 在过去,现在和未来的气候场景下重建和预测亚马逊大树的分布.
- 评估气候驱动因素对Dinizia excelsa和Goupia glabra息地适宜性的影响.
主要方法:
- 整合生态利基模型与LiDAR,森林库存和生物气候数据的整合.
- 使用MARS,随机森林,MaxEnt和GAM算法.
- 在多个生物地理省份和气候场景 (SSP1-2.6,SSP5-8.5) 中进行分析.
主要成果:
- Dinizia excelsa和LiDAR识别的高树对极端温度非常敏感,特别是在圭亚那盾和罗莱玛省.
- 黄 (Goupia glabra) 对降水变化的耐受性更强.
- 根据SSP5-8.5,到2080年,预计将有多达45%的息地丧失,特别是在亚马逊南部的省份.
结论:
- 低排放场景 (SSP1-2.6) 可能导致北亚马逊的息地稳定或扩张.
- 需要紧急的保护战略,以保护关键的避难所和加强生态系统的弹性.
- 有针对性的保护对于保护亚马逊大树免受气候变化影响的加剧至关重要.
相关概念视频
Global Climate Change
28.7K
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.
28.7K
Threats to Biodiversity
26.6K
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...
26.6K
What is Climate?
20.5K
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.
20.5K
Responses to Drought and Flooding
11.9K
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.
11.9K
Adaptations that Reduce Water Loss
27.9K
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.
27.9K
Ecological Disturbance
20.7K
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.
20.7K


