未来的西藏草原将减少:从建设性草物种的新见解
Guoyong Tang1, Qingwan Li1,2,3, Shunbin Wang1
1Chuxiong Normal University, Chuxiong, China.
iScience
|January 7, 2026
概括
由于气候变化,到2060年,西藏草原面临预计4.6%的下降. 虽然生产性草原减少,但野生动物息地可能会扩大,影响牧民生计和生物多样性.
科学领域:
- 生态生态学 生态生态学
- 气候变化科学 气候变化科学
- 保护生物学 保护生物学
背景情况:
- 西藏的草原是一个关键的生态系统,支持牧民生计和野生动物.
- 在气候变化和人类压力下,未来的草原分布尚未得到充分理解.
研究的目的:
- 使用物种级建模框架,预测西藏草原未来的空间分布.
- 评估气候变化对草原动态的影响,并确定牧场和生物多样性之间的权衡.
主要方法:
- 开发了一种创新的物种级建模框架.
- 在各种变暖情景下模拟了44种构造性草的未来空间分布.
- 分析了草原总面积,生产性草原和野生动物息地的草原的预测变化.
主要成果:
- 预计到2060年,草原总面积将净减少4.6%,预计到2060年,草原总面积将减少4.6%.
- 生产性草原预计将减少6.7%,而野生动物息地的草原可能会扩大6.6%.
- 在更极端的变暖情景下 (2°C/世纪或5°C/世纪) 预计会有更大的草原损失.
结论:
- 气候变化给西藏草原的牧场生产力带来了挑战.
- 预计的变化可能会通过扩大息地来造福西藏野生动物.
- 结果为在高海拔生态系统中平衡牧场可持续性和生物多样性保护提供了洞察力.
相关概念视频
Ecological Succession
21.2K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.2K
Light Acquisition
9.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.4K
Plant Breeding and Biotechnology
21.4K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
21.4K
Threats to Biodiversity
26.5K
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...
26.5K
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


