相关实验视频
Updated: Jul 17, 2025

06:27
Simulating Impacts of Ice Storms on Forest Ecosystems
Published on: June 30, 2020
7.0K
中国南部两种树对气候变化的分布反应
De Tuan Liu1,2,3, Jian Ying Chen4, Wei Bang Sun1
1Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany, Chinese Academy of Sciences Kunming China.
Ecology and evolution
|September 4, 2023
概括
气候变化影响了山地物种的分布. 青海-西藏高原的两个树种类可能会向东移动范围,不同的地形可能会减轻息地丧失.
科学领域:
- 生态生态学 生态生态学
- 生物多样性科学 生物多样性科学
- 气候变化生物学 气候变化生物学
背景情况:
- 气候变化显著影响生物多样性和物种分布,特别是山地物种.
- 山地物种可能会通过迁移到更高的海拔来应对气候变化.
- 青海-西藏高原 (QTP) 和恒都山脉的东南部是生物多样性的关键热点,对树物种对气候变化反应的数据有限.
研究的目的:
- 评估过去,现在和未来气候场景对QTP和恒大山脉两种树物种息地适宜性的影响.
- 确定影响这些树物种分布的关键气候因素.
- 在不同的气候变化场景下预测潜在的范围变化和息地变化.
主要方法:
- 利用Biomod2模型平台来预测物种分布.
- 分析了各种气候场景下的息地适宜性,包括最后的冰川最大值 (LGM),现在和未来 (2050年代,2070年代).
- 确定温度季节性 (生物4) 是物种分布的最关键因素.
主要成果:
- 对于*Acer cesium*和*Acer stachyophyllum*而言,可能适合的息地在LGM期间比现在更大.
- 在目前的条件下,适合的息地集中在西藏东南部,恒达山脉,林达巴山脉和武门达良山脉.
- 未来的情景预测息地损失13.78%45.71%,增加18.88%57.98%,在合适的地区普遍向东转移,特别是在东部的QTP和恒达山脉.
结论:
- QTP和恒duan山脉的多样化地形可能为山地植物提供避难所,以抵御气候变暖引起的范围收缩.
- 这些发现为保护规划提供了关键数据,包括保护区的指定和中国南部的物种保护战略.
- 这些热点地区的树物种面临着严重的息地变迁,需要采取积极的保护措施来应对全球变暖.
相关概念视频
Responses to Heat and Cold Stress
13.6K
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.
13.6K
Adaptations that Reduce Water Loss
25.7K
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.
25.7K
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
Responses to Salt Stress
13.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.2K
Global Climate Change
24.5K
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.
24.5K

