早期预警信号表明,气候变化引起的压力在挪威的松树,在东卡尔巴提亚山脉的松树
Andrei Popa1, Ernst van der Maaten2, Ionel Popa3
1National Institute for Research and Development in Forestry 'Marin Dracea', Bucharest, Romania; Faculty of Silviculture and Forest Engineering, Transilvania University of Brasov, Brasov, Romania.
The Science of the total environment
|December 10, 2023
概括
挪威杉 (Picea abies) 森林在东卡尔巴提亚山脉显示,由于气候变化显著增长下降. 虽然立即大规模的衰退并不明显,但增加的脆弱性表明这些重要的欧洲森林的未来风险.
科学领域:
- 森林生态 森林生态
- 气候变化影响气候变化的影响.
- 登德罗年代学 登德罗年代学
背景情况:
- 全球气候变化,以变暖和极端事件为特征,对全球森林生态系统产生重大影响.
- 挪威杉 (Picea abies (L.) Karst.)) 是一种挪威杉. 是一个关键的欧洲针叶树物种,由于最近的干旱,在中欧面临着观察到的衰退.
- 在预计的气候变化下,东欧挪威杉林的未来弹性仍然不确定.
研究的目的:
- 评估在罗马尼亚东卡尔帕提亚地区挪威杉林的当前状况和脆弱性,以应对气候变化.
- 确定这些森林中气候变化引起的压力的早期预警信号,包括生长下降,敏感性增加和生长同步.
- 评估未来东欧松树衰退的可能性.
主要方法:
- 建立了157个挪威松树树的树环网络,这些树来自3000多棵树,跨越了东卡帕提亚山脉的海拔横断.
- 分析了树环数据,以评估气候变化引起的压力指标:生长下降,生长灵敏度 (第一阶自相关和标准偏差) 和生长同步.
- 在不同位年龄和高度上比较成长模式.
主要成果:
- 在过去的二十年中,挪威杉的生长明显下降,在年轻的树和较低的海拔上最严重.
- 虽然增长下降是显而易见的,但增长敏感性和同步性增加的指标在研究区域中并没有表现出一致的模式.
- 这些发现表明,虽然森林面临压力,但立即广泛下降可能不会迫在眉.
结论:
- 东卡尔帕提亚地区的挪威杉林对持续的气候变化表现出更大的脆弱性.
- 尽管没有一贯的早期预警信号,预示着立即的大规模下降,但该地区预计未来会出现衰退事件.
- 该研究强调,在不断变化的气候条件下,需要对东欧的挪威杉进行监测和适应性管理战略.
相关概念视频
Responses to Heat and Cold Stress
13.5K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.5K
Global Climate Change
24.4K
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.
24.4K
Threats to Biodiversity
22.3K
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...
22.3K
Adaptations that Reduce Water Loss
25.6K
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.
25.6K
Responses to Drought and Flooding
10.7K
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.
10.7K
What is Climate?
18.6K
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.
18.6K


