蓝色碳从全球盐沼恢复中受益
Victoria G Mason1,2,3, Annette Burden4, Graham Epstein5,6
1School of Ocean Sciences, Bangor University, Anglesey, UK.
Global change biology
|September 25, 2023
概括
恢复沿海盐沼区显著增加碳储存和温室气体吸收. 再生的沼泽可以抵消全球二氧化碳排放的显著比例,突出其在减缓气候变化方面的重要作用.
科学领域:
- 生态生态学 生态生态学
- 气候科学 气候科学
- 环境管理环境管理
背景情况:
- 在全球范围内,沿海盐沼地区经历了显著的历史覆盖率减少 (25%-50%).
- 恢复工作是由盐沼作为"蓝色"碳汇的潜力驱动的,但全球数据有限.
- 量化碳捕获和温室气体 (GHG) 缓解的盐沼恢复的好处至关重要.
研究的目的:
- 综合全球数据,量化碳积累和温室气体吸收,从盐沼恢复中获益.
- 估计盐沼再生对抵消全球碳排放的潜在贡献.
- 确定影响碳储存和温室气体流动在盐沼地的因素.
主要方法:
- 一项元分析,综合了431项已发表的关于盐沼碳动态研究的数据.
- 在恢复的盐沼中计算平均净碳积累率.
- 基于恢复率的潜在年度二氧化碳封存的估计.
主要成果:
- 全球盐沼储存的碳量估计为1.41-2.44倍克 (Pg).
- 恢复后的沼泽地区的温室气体流量较低,平均净积累率为每公每年64.70二氧化碳当量.
- 盐沼再生每年可以封存12.93-207.03兆 (Mt) 的二氧化碳相当量,可能抵消全球能源相关二氧化碳排放的0.51%.
- 碳积累和温室气体流动受温度,降雨量和植被类型的影响,在美国和澳大利亚的东海岸确定了特定的热点.
结论:
- 盐沼恢复为碳捕获和气候变化缓解提供了一个重要的,但尚未充分利用的,以自然为基础的解决方案.
- 尽管在某些地区存在数据缺口,但盐沼地区抵消碳排放的潜力是巨大的.
- 有效的盐沼恢复和碳抵消取决于政策,管理行动和财政激励.
相关概念视频
Bioremediation
18.8K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.8K
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
The Carbon Cycle
38.3K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
38.3K
Effect of Sea Water on Concrete
271
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
271
Carbon-dioxide Fixation
30
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
30
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


