地球上最偏远的蓝碳生态系统中的有机碳库存
Gaëlle Duchâtellier1, Anna Bakker1, Sam J Purkis1,2
1Department of Marine Geosciences, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Miami, Florida 33149, United States.
Environmental science & technology
|November 5, 2025
概括
热带沿海生态系统储存了大量的蓝色碳. 新的地图显示,这些重要息地,包括红树林和海草,对于长期的碳捕获至关重要,需要进行保护.
科学领域:
- 海洋生态海洋生态学
- 碳科学 是一种碳科学.
- 遥感是一种远程传感.
背景情况:
- 热带沿海生态系统对于蓝色碳封存至关重要,在几个世纪中储存了大量的有机碳 (Corg).
- 通过遥感绘制这些生态系统的地图面临着诸如云层覆盖和不一致的方法等挑战.
- 全球珊瑚礁探险队的高分辨率底层息地图提供了一个独特的数据集,用于评估偏远的蓝色碳息地.
研究的目的:
- 系统地评估在偏远的热带海洋生态系统中蓝色碳息地 (红树林,海草草地,大藻息地) 的范围.
- 提供新的基于地图的蓝色碳储存在这些生态系统的估计.
- 为了确定潜在的蓝色碳热点,并评估息地碎片化.
主要方法:
- 利用了来自哈勒德·本·苏丹生活海洋基金会全球珊瑚礁探险 (2005-2016) 的高分辨率底层息地图.
- 在69个研究区域 (∼15,970平方公里) 绘制了红树林,海草草地和大藻息地.
- 集成地图数据与区域碳库存数据,以估计有机碳储存.
主要成果:
- 新的基于地图的估计量化了69个偏远热带研究区的蓝色碳息地.
- 这些生态系统平均储存41.84 Tg Corg,区域差异很大 (4.69-176.95 Tg Corg).
- 所罗门群岛,巴哈马和哥伦比亚被确定为潜在的蓝色碳热点; 法属波利尼西亚显示高碎片化.
结论:
- 全球一致的绘图和新的库存估计解决了对偏远生态系统的关键知识缺口,其中82%的信息以前没有被评估.
- 这些发现为热带蓝碳生态系统的有效管理和保护策略提供了必要的基线数据.
- 强调这些生态系统对于通过长期碳捕获来缓解气候变化的重要性.
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