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量化盐沼作为脆弱的碳汇的作用:来自葡萄牙北部的案例研究

Jacinto Cunha¹, Edna Cabecinha², Sebastian Villasante³

¹CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal; CITAB/Inov4Agro - Centre for Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.

The Science of the total environment

|March 6, 2024

概括

沿海盐沼是重要的碳汇,储存数百万的碳价值. 海平面上升威胁着这些生态系统,危及到2100年大幅减少碳排放和增加排放.

科学领域:

沿海生态沿海生态
气候变化科学气候变化科学
蓝碳研究蓝碳研究

背景情况:

盐沼对于碳捕获至关重要,但面临着气候变化引起的海平面上升 (SLR) 的威胁.
了解蓝色碳库存及其经济价值对于保护工作至关重要.
盐沼碳储存能力的区域和地方变化需要详细评估.

研究的目的:

评估葡萄牙盐沼地区的区域和地方规模的蓝色碳库存变化.
为了估计这些碳库存的经济价值.
根据IPCC AR6情景,根据预计的海平面上升 (SLR) 预测潜在的息地和碳损失.

主要方法:

在葡萄牙北部的三个河口盐沼 (Minho,Lima,Cávado) 中量化有机碳库存.
估计了储存的蓝色碳的经济价值.
基于2050年和2100年的IPCC AR6 SLR场景,建模了潜在的息地丧失和相关的碳排放.

主要成果:

研究的盐沼地拥有38,798 ± 2880有机碳的综合碳储量,估值约为396万欧元.
在物种和地点之间观察到碳库存的显著变化,利马盐沼显示某些物种 (如Spartina patens) 的较高值.
卡瓦多盐沼面临着由于SLR造成的洪水和息地丧失的最高风险,而利马盐沼则表现出更大的弹性.

结论:

考虑到当地和地区的变化,对蓝色碳的特定地点的评估至关重要.
由于SLR造成的盐沼地区的息地丧失可能导致大量的二氧化碳排放,到2100年将达到22000至130000.
保护和恢复盐沼对于维持它们作为碳汇的作用和缓解气候变化至关重要.

关键词:

蓝色碳是一种蓝色碳.生态系统服务生态系统服务国际气候变化专门委员会 (IPCC) 的情景葡萄牙葡萄牙葡萄牙盐沼地区盐沼地区海平面上升的海平面上升.

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