通过建模方法评估潮平原对气候变化和碳中和性的贡献
Sukyeong Yang1, Heung-Sik Park2, Bong-Oh Kwon3
1Research Centre for Climate Change and Energy, Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, 24252, Republic of Korea.
Marine environmental research
|March 11, 2025
概括
韩国的潮平面是重要的天然碳汇,储存大量有机碳,并为减缓气候变化和碳中和目标做出贡献. 这些沿海生态系统有效地封存碳,支持国家气候战略.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 沿海生态 沿海生态
背景情况:
- 潮沿海生态系统作为关键的天然碳汇,通过沉积物中的大气二氧化碳捕获来缓解气候变化至关重要.
- 在潮平面中储存的有机碳在减缓气候变化和实现碳中和目标方面发挥着重要作用,同时防止沿海侵蚀.
- 虽然全球和韩国潮平面碳库存的研究越来越多,但对它们在减缓气候变化中的作用缺乏全面的评估.
研究的目的:
- 量化和模拟韩国潮平面内的有机碳库存.
- 评估这些碳库存在减缓气候变化和实现碳中和方面的作用.
- 评估潮平地对国家气候目标的潜在贡献,例如韩国2050年碳中和战略.
主要方法:
- 从朝鲜海岸沿线的37个代表性潮平原地点收集了高达70厘米深的生物质植被,气象和沉积物数据.
- 应用碳平衡模型来模拟碳捕集率,并预测到2050年的沉积碳库存.
- 利用采样数据估计总有机碳 (TOC) 储存量和随着时间的推移而增加的碳质量.
主要成果:
- 在2050年预测的平均总有机碳 (TOC) 储存:53.41Mg C ha-1为植被和45.48Mg C ha-1为非植被的潮平面 (深达70厘米).
- 随着时间的推移,观察到碳质量的线性增加,碳捕集率从0.037到0.71 Mg C ha-1 yr-1.1.不等.
- 据估计,韩国的潮平面含有11.2亿Mg C (∼4.13×107tCO2eq) 的有机碳 (深度70厘米),预计将为韩国2050年碳中和战略贡献7.64×106的CO2eq.
结论:
- 韩国的潮平面具有作为天然碳汇的巨大潜力,能够储存大量有机碳.
- 这些发现支持将潮平面碳库存纳入"巴黎协定"下的国家自主贡献 (NDC).
- 这项研究提高了对韩国潮平面碳库存及其在减缓气候变化和未来碳中和目标中的关键作用的理解.
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