Linear logic models are insufficient to understand how interventions work in complex areas such as sustainable tourism. We present Participatory Systems Mapping (PSM), a novel method to develop shared understandings and collective management of complex policy issues among stakeholders. We use PSM with stakeholders in Barcelona to support the design of an upcoming evaluation of an existing sustainability programme. Discussion during workshops, and analysis of the PSM map produced, suggest sharing best practices and improving peer-to-peer learning are pivotal to improving sustainability. We show how a complex systems approach, implemented via PSM, can provide a more holistic understanding of the contexts and interactions of tourism policy. We offer learning and guidance on how the method can be used by others.

线性逻辑模型不足以理解干预措施如何在可持续旅游等复杂领域发挥作用。我们提出了参与式系统映射 (PSM)，这是一种在利益相关者之间发展对复杂政策问题的共享理解和集体管理的新方法。我们与巴塞罗那的利益相关者一起使用 PSM 来支持即将对现有可持续发展计划进行评估的设计。研讨会期间的讨论以及对生成的 PSM 地图的分析表明，分享最佳实践和改进点对点学习对于提高可持续性至关重要。我们展示了通过 PSM 实施的复杂系统方法如何能够更全面地了解旅游政策的背景和相互作用。我们提供有关其他人如何使用该方法的学习和指导。