Tourism needs to reduce emissions in line with other economic sectors, if the international community's objective of staying global warming at 1.5°-2.0 °C is to be achieved. This will require the industry to half emissions to 2030, and to reach net-zero by mid-century. Mitigation requires consideration of four dimensions, the Scales, Scopes, Stakeholders and Strategies of carbon management. The paper provides a systematic review of these dimensions and their interrelationships, with a focus on emission inventory comprehensiveness; allocation principles at different scales; clearly defined responsibilities for decarbonization; and the identification of significant mitigation strategies. The paper concludes that without mitigation efforts, tourism will deplete 40% of the world's remaining carbon budget to 1.5 °C. Yet, the most powerful decarbonization measures face major corporate, political and technical barriers. Without worldwide policy efforts at the national scale to manage the sector's emissions, tourism will turn into one of the major drivers of climate change.

如果要实现国际社会将全球变暖控制在 1.5°-2.0°C 的目标，旅游业需要与其他经济部门一起减少排放。这将要求该行业到 2030 年将排放量减半，并在本世纪中叶达到净零排放。减缓需要考虑四个维度，即碳管理的规模、范围、利益相关者和战略。本文系统地回顾了这些维度及其相互关系，重点关注排放清单的全面性；不同规模的分配原则；明确界定脱碳责任；以及确定重要的缓解策略。该论文的结论是，如果不采取缓解措施，旅游业将把世界剩余碳预算的 40% 消耗到 1.5°C。然而，最有力的脱碳措施面临重大的企业、政治和技术障碍。如果没有国家层面的全球政策努力来管理该部门的排放，旅游业将成为气候变化的主要驱动力之一。