The saltmarsh carbon storage potential is a key topic in blue carbon research and climate policy. Ecosystem service valuations provide valuable information to policymakers for habitat management and climate change mitigation policies. Yet, only few saltmarsh valuation studies have included the carbon storage service in the UK context. This paper investigates how the public values saltmarsh ecosystem services, focussing on the carbon storage service. We used a choice experiment to elicit the willingness to pay (WTP) of a representative sample of the Scottish public to support interventions that would maintain or improve the provision of these services. Furthermore, we tested the effect of information on individuals' preferences and WTP with a split sample approach where one group received a treatment in the form of additional information. We found that (i) all attributes had a significant influence on individuals' choices; (ii) both groups had, on average, a positive marginal WTP for all presented ecosystem services; (iii) the treated sample had, on average, no significantly different marginal WTP for carbon storage than the control group. This paper adds to the limited literature on the saltmarsh carbon storage ecosystem service and demonstrates a developed nation's public's openness to nature-based climate change mitigation solutions.

盐沼碳储存潜力是蓝碳研究和气候政策中的一个关键课题。生态系统服务估值为决策者提供了宝贵的栖息地管理和气候变化缓解政策信息。然而，只有少数盐沼估值研究包括英国背景下的碳储存服务。本文调查了公众如何评价盐沼生态系统服务，重点关注碳储存服务。我们使用选择实验来得出苏格兰公众代表性样本的支付意愿 (WTP)，以支持维持或改善这些服务提供的干预措施。此外，我们使用拆分样本方法测试了信息对个人偏好和 WTP 的影响，其中一组以附加信息的形式接受治疗。我们发现 (i) 所有属性都对个人的选择产生重大影响；(ii) 平均而言，这两个群体对所有呈现的生态系统服务都有积极的边际支付意愿；(iii) 平均而言，处理过的样品与对照组相比，碳储存边际支付意愿没有显着差异。本文补充了关于盐沼碳储存生态系统服务的有限文献，并展示了发达国家公众对基于自然的气候变化缓解解决方案的开放态度。