增加的海平面上升加速了宏观潮盐沼的碳捕获
Rey Harvey Suello1, Daan Temmerman1, Steven Bouillon2
1University of Antwerp, ECOSPHERE, Wilrijk, 2610, Belgium.
The Science of the total environment
|December 17, 2024
概括
随着海平面的上升,盐会吸收更多的碳,在加速相对海平面上升 (RSLR) 的地区观察到的比例更高. 这表明盐沼地区的自然气候解决方案是可持续的,并且可能随着海平面上升而变得更有效.
科学领域:
- 环境科学 环境科学
- 气候变化 生态学 生态学
- 沿海的地形形态学
背景情况:
- 盐沼对于通过碳捕获来缓解气候变化至关重要.
- 加快的海平面上升 (RSLR) 对盐沼功能构成威胁.
- 了解OCAR对RSLR的反应对于气候减缓战略至关重要.
研究的目的:
- 为了研究加速RSLR对盐沼地的有机碳积累率 (OCAR) 的影响.
- 为了比较四十年来在两个附近的地点与不同RSLR率的OCAR.
- 评估RSLR对沉积积率 (SAR) 和碳含量的影响.
主要方法:
- 在两个相邻的荷兰盐沼地研究了OCAR超过40年.
- 一个地点经历了由于沉降而加速的RSLR (9.7-11.7毫米/年-1);另一个地点有低的RSLR (2.0毫米/年-1).
- 在不同地点和不同沼泽区 (地与盆地) 之间比较OCAR和SAR.
主要成果:
- 加速的RSLR站点显示OCAR是低RSLR站点的两倍.
- 在堤上,OCAR增加了63%,在 RSLR 加速的盆地中增加了27%.
- 增加的OCAR主要是由由于增加的潮淹水和沉积物供应而增加的SAR驱动的.
结论:
- 盐沼碳捕集能力随着加速的RSLR而增加.
- 在盐沼地区以自然为基础的气候缓解是长期可持续的.
- 盐沼对于减缓气候变化的有效性可能会随着未来海平面上升而增加.
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