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PurposeThis study initiated an investigation of how the Macau–Zhuhai tourism cooperated and discussed how Macau and Zhuhai could join hands to develop tourism in the region. The study demonstrated an approach for destination marketing organizations to explore online tourist-generated content and to understand tourists' perceptions of the destination image (DI).Design/methodology/approachA total of 1,291,057 reviews (535,317 for Macau and 755,740 for Zhuhai) were collected, analyzed and examined to determine how the DI s of Macau and Zhuhai changed during the period of 2015–2019 based on tourist-generated content on travel websites (TripAdvisor, Ctrip.com and Qyer.com) through a text-mining approach.FindingsThe result revealed that Macau and Zhuhai were in a hybrid of competition and collaboration on tourism DI s. First, Macau and Zhuhai competed in hotel and catering industry. Macau was appealing to international tourists and provided high-end and prestigious offerings; while Zhuhai was impressed by cost-effective accommodation and food. Second, Macau diversified industrial structure with diverse "Tourism, Leisure and Recreation" and "Culture, History and Art" more than Zhuhai did. Meanwhile, Macau should balance the different demands of international and Chinese tourists. Third, complementary potentials were found in natural resources, urbanization technology and tourism innovation and related projects.Practical implicationsThe research provides valuable insights for policymakers and industrial managers on their endeavors to develop DIs. Policymakers should be able to develop supportive mechanisms and tourism facilitators to promote industrial collaboration and mutual DIs. Managers could refer to the components in the changing DIs and identify the developmental gaps and cooperation potentials in their targeted areas.Originality/valueThe research fulfills the gap in regional tourism studies on Macau, in which the evaluation on synergetic influence and neighbor effect from Zhuhai has been underexplored. Facilitated by up-to-date data mining techniques, the study contributes to both DI and coopetition literature in tourism marketing; and this should inspire further studies on the antecedences of DI changes, resolutions to the competing interests and DIs of different stakeholders in different forms of strategic cooperation in regional tourism. The employment of DIs is an explicit demonstration of tourists' immersion and values attached to the destination, providing effective cues on the status of coopetition.

Alpine grasslands on the Tibetan Plateau, being vulnerable to environmental and anthropogenic changes, have experienced dramatic climate change and intensive livestock grazing during the last half-century. Climate change, coupled with grazing activities, has profoundly altered alpine grassland function and structure and resulted in vast grassland degradation. To restore degraded grasslands, the Central Government of China has implemented the Ecological Security Barrier Protection and Construction Project since 2008 across the Tibetan Autonomous Region. However, the relative effect of climate change and grazing activities on the variation in alpine grassland productivity is still under debate. In this study, we quantified how aboveground net primary production (ANPP) varied before (2000-2008) and after (2009-2017) starting the project across different alpine grasslands and how much variance in ANPP could be attributed to climate change and grazing disturbance, in terms of temperature, precipitation, solar radiation, and grazing intensity. Our results revealed that Tibet's climate got warmer and wetter, and grazing intensity decreased after starting the project. Mean ANPP increased at approximately 81% of the sites, on average from 27.0 g C m(-2) during 2000-2008 to 28.4 g C m(-2) during 2009-2017. The ANPP positively correlated with annual temperature and precipitation, but negatively with grazing intensity for both periods. Random forest modeling indicated that grazing intensity (14.5%) had a much lower influence in controlling the dynamics of grassland ANPP than precipitation (29.0%), suggesting that precipitation variability was the key factor for alpine grassland ANPP increase across Tibet.