Deliberative valuation of ecosystem services is expected to capture the diversity of values related to ecosystem services and to facilitate learning and reconsideration of previously held preferences and positions. This paper reports on a study of a deliberative non-monetary valuation process that was designed to address the value of peatland ecosystem services in Southern Finland. Three parallel citizen panels were organised in order to consider the relative merits of energy peat extraction and peatland protection and to assign value to peatland ecosystem services. The results suggest that increased understanding of peatlands' role in carbon storage, together with reflection on the underlying value positions, led the panellists to adopt a more critical view of energy peat use. All three panels came independently to the same conclusion that peat extraction should be gradually phased out and replaced with renewable energy production. The results also sustain the hypothesis that deliberative settings evoke citizen preferences as the arguments used in the discussions were predominantly public spirited, referring to the common good instead of individual interests. We discuss the outcomes and factors that influenced the deliberations and make recommendations for effective deliberative designs.

预期对生态系统服务进行审议性估值将捕获与生态系统服务有关的价值的多样性，并有助于学习和重新考虑先前持有的偏好和立场。本文报告了一项研究性非货币估值过程的研究，该过程旨在解决芬兰南部泥炭地生态系统服务的价值。为了考虑能源泥炭开采和泥炭地保护的相对价值，并为泥炭地生态系统服务分配价值，组织了三个平行的公民小组。结果表明，人们对泥炭地在碳储存中的作用的了解加深，以及对潜在价值立场的反思，促使小组成员对能源泥炭的使用采取了更为批判的观点。所有这三个小组均得出一个相同的结论，即应逐步淘汰泥炭开采，并以可再生能源生产代替。结果还支持这样一种假设，即讨论环境引起了公民的偏爱，因为讨论中使用的论点主要是出于公共利益，指的是共同利益而不是个人利益。我们讨论影响审议的结果和因素，并为有效的审议设计提出建议。