Integrating issue-oriented solution of marine spatial planning (MSP): A case study of Koh Sichang in Thailand

As an effective means of coordinating sea use conflicts and promoting ecological conservation, Marine Spatial Planning (MSP) has been well-known by more and more countries. The study has developed an issue-oriented solution for Koh Sichang and its surrounding sea areas in Thailand. Through multi-source data collection and on-site survey, the characteristics of abundant coral reef resources, numerous waterways and mooring areas have been identified. Then, corresponding thematic studies and zoning were conducted, including cassava scatter risk prediction, habitat risk assessment, demarcation of aquaculture priority areas, and scenario analysis. The results show that: (1) Cassava powder accumulates northeast of Koh Sichang and adjacent areas and distributes as high as 84%, with significant diffusion under south wind. Suggest strengthening maritime transport supervision; (2) Human activities have led to a 100% moderate risk for coral reefs around Koh Sichang. While under conservation pattern, the proportion could be reduced to 30%, highlighting the urgency of protective measures; (3) Contrasting the protection and development patterns reveals the double-edged sword effect of the development of tourism and transportation industries on the environment, emphasizing the need to uphold the concept of sustainable development and ecosystem-based management.