The achievement of "dual-carbon" goals in tourism has become one of the key indicators of tourism high-quality development. In this paper, Jiangxi Province, a national demonstration area of ecological civilization, is taken as the research case. Based on the measurement of carbon emissions and carbon sinks of tourism industry, STIRPAT model and GM grey prediction model are used to predict the carbon peak and carbon neutralization of tourism industry in different scenarios. The results show that: (1) From 2000 to 2019, both carbon emissions and carbon sinks of tourism in Jiangxi displayed a growth trend. The carbon emissions changed from a slow growth at the early stage to a rapid growth at the late stage, and the carbon sinks continued to grow slowly. The average annual change rates of carbon emissions and carbon sinks in the 20 years were 21.09% and 9.11%, respectively. (2) The intensity of tourism carbon emission will have an important impact on the realization of tourism carbon peak. In the benchmark scenario, the medium scenario and the low carbon scenario, the time reaching tourism carbon peak in Jiangxi is about 2035, 2030 and 2025, respectively, indicating the great divergence among the three scenarios. (3) It is predicted that the carbon sink of tourism in Jiangxi will remain a steady growth in the future. Under the relevant policies of low-carbon scenarios, Jiangxi’s tourism can achieve carbon neutrality before 2060. It is suggested that the tourism industry should take measures to ensure the reduction of tourism carbon emissions and promote the ecologicalization of tourism to increase tourism carbon sinks in order to achieve the goal of "dual carbon".

The Beijing Winter Olympic Games is the first major international sports event after China was committed to achieve "carbon peak by 2030 and carbon neutrality by 2060". Green Olympics is one of the four concepts of the Beijing Winter Olympics. This paper studies carbon emission reduction technologies and carbon neutral measures in the Beijing Winter Olympics through literature and case analysis methods, investigating the application of green and low-carbon technologies in Beijing Winter Olympic Games and the experiences, as well as the enlightenment to the development of low-carbon tourism. The results show that: (1) Guided by the concepts of "Carbon Peaking and Carbon Neutrality", "Sustainability" and "Two Mountains Theory", the carbon emission reduction technologies and carbon neutralization measures are implemented into the whole process, before, during and after the Beijing Winter Olympic Games, providing technique reference for the transformation and application of green and low-carbon technologies and achieving great social, ecological and economic benefits. (2) The application of green and low-carbon technologies in Beijing Winter Olympic Games is of great significance to the sustainable development of low-carbon tourism. This paper discusses the path of achieving low-carbon tourism development from the following eight aspects: the scientific site selection of tourism projects, the formulation of low-carbon tourism standards, the efficient use of existing facilities, the construction of low-carbon energy system, the building of low-carbon transportation system, the creation of low-carbon product system, the establishment of carbon neutrality mechanism and the green consumption by tourists.

The successful staging and image dissemination of ecological festivals will help the construction of ecological cities and the formation of tourists’ green concepts and pro-environmental behaviors. Taking the 2019 Beijing International Horticultural Exposition as an example, based on the "projected image-perceived image" analytical framework, the image projection and perception difference of typical ecological festivals were evaluated by using content analysis, correspondence analysis, and component analysis methods. The research shows that: (1) The image of Beijing Horticultural Expo is divided into four dimensions: tourism attractions, environment and local atmosphere, facilities and services, and tourism experience. (2) The difference between projected image and perceived image is small in the dimension of tourism attractions; whilst differences are large in the dimensions of environment and local atmosphere, facilities and services, and tourism experience. (3) The projected image and the perceived image have large component differences in the dimensions of tourism experience, environment and local atmosphere. In the dimension of tourism attractions and facilities and services, there are obvious differences within the projected image, which is reflected in the large component difference between the projected image and the perceived image of the official Weibo in the dimension of tourism attractions, and the large component difference between the projected image and the perceived image of the official public account in the dimension of facilities and services. (4) The green ecological environment and local atmosphere constructed in the Beijing International Horticultural Expo are poorly perceived by tourists. The reason is that the festival organizers have a monotonous projection strategy for green ecological images, and tourists regard ecological festivals as tourist destinations and pay more attention to travel-related information, resulting in the deviation of image projection and perception. This study focused on the differences in the direction and composition of the projected image and the perceived image of Beijing International Horticultural Exposition, revealing its distinctive features in different thematic dimensions, which will benefit the scientific and refined evaluation of ecological events and support the improvement of its image communication effect.