海洋性增强对减轻海洋酸化对海洋化物负面影响的实质性限制
Hanna van de Mortel1,2, Nina Bednaršek3, Greg Pelletier4
1HvdMortel Consulting, Utrecht 3515GS, Netherlands.
Environmental science & technology
|December 28, 2025
概括
海洋性增强 (OAE) 可以减轻海洋酸化 (OA) 并帮助消除二氧化碳 (CDR). 然而,OAE可能无法完全恢复海洋物种的化,并使气候目标复杂化.
科学领域:
- 海洋化学 海洋化学
- 碳循环科学 碳循环科学
- 海洋生物学 海洋生物学
背景情况:
- 海洋性增强 (OAE) 是一项拟议的海洋二氧化碳去除 (mCDR) 战略.
- OAE的目标是减轻海洋酸化 (OA) 和对海洋化物的负面影响.
- 生物共同效益和OAE的有效性仍然受到很小的限制.
研究的目的:
- 评估OAE对海洋化生物的生物共同益处.
- 为了量化历史的OA驱动的化损失.
- 评估OAE在不同情景下扭转这些损失的潜力.
主要方法:
- 使用回归模型将化与总性 (TA) 和溶解无机碳 (DIC) 联系起来.
- 自工业前时代以来,27个海洋化器的量化化下降.
- 模拟的OAE冲击与没有空海平衡.
主要成果:
- 自工业前时代以来,观察到显著的化下降,特别是在线性反应者 (例如,胃类动物,类动物) 中.
- 一个现实的OAE添加 (50μmol-1kg) 最多恢复了0-52.2%的化,对敏感的种类有更大的好处.
- 恢复工业前化需要更高的TA添加,特别是考虑到CO2平衡.
结论:
- 对某些海洋物种来说,OAE可以部分恢复化,但可能无法完全逆转OA的影响.
- 通过OAE提高CDR效率可以降低其OA缓解潜力.
- 对于气候目标和海洋生态系统健康,OAE的有效性需要在政策和管理中仔细考虑.
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