气候变化和人类活动引起的植被动态:对沿海湿地恢复的影响
Qinling Bai1, Tiejun Wang2, Qiong Han3
1Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Weijin Road 92, Tianjin, 300072, PR China.
Journal of environmental management
|May 4, 2025
概括
尽管有恢复工作,但沿海湿地植被正在下降,受气候变化和水产养殖等人类活动的影响. 有针对性的恢复措施可以帮助特定地区的恢复.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 沿海湿地是重要的生态系统,面临着气候变化和人类活动带来的重大威胁.
- 了解植被动态对于有效的沿海湿地管理和恢复至关重要.
研究的目的:
- 分析贝达加格湿地自然保护区植被动态 (NDVI) 的时空变化.
- 研究气候变化和不同的人类影响 (低干扰,高干扰,恢复) 对植被反应的影响.
主要方法:
- 利用Landsat数据和现场调查来评估植被变化.
- 分析了从1984年到2023年的规范差异植被指数 (NDVI) 趋势.
- 基于干扰水平和气候因素 (如温度) 的不同植被反应.
主要成果:
- 总体而言,生长季节的NDVI显示出明显的下降趋势 (-0.0025 a-1).
- 由于温度上升,植被在低干扰地区增加,但在高干扰地区减少.
- 水产养殖和补水的遗留影响阻碍了恢复,而特定的恢复措施改善了它.
结论:
- 沿海湿地植被动态是由气候变化和人类活动之间的复杂相互作用所塑造的.
- 人类活动,特别是历史的土地利用,对湿地植被恢复有持久的负面影响.
- 战略性恢复干预对于改善受威胁的沿海湿地的植被健康至关重要.
相关概念视频
Ecological Succession
17.0K
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...
17.0K
Ecological Disturbance
16.9K
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.
16.9K
Adaptations that Reduce Water Loss
25.0K
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.
25.0K
Responses to Drought and Flooding
10.5K
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.
10.5K
Threats to Biodiversity
21.9K
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...
21.9K
Global Climate Change
24.0K
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.
24.0K


