Abstract: Application scenarios are the main carrier of digital reform, serving as the backbone and link for achieving digital empowerment and institutional reshaping. Based on the pilot work of application scenarios in various counties (cities, districts), the use of fusion technology can avoid duplicate financial investment at all levels, reduce the burden of grassroots operation and maintenance, and further enhance the effectiveness of digital reform. This article focuses on four existing marine related business systems and application scenarios:marine spatial resource supervision, marine ecological warning and evaluation, marine disaster perception and prevention, and marine economic monitoring and evaluation. From the dimensions of business, technology, and interaction, GIS based digital fusion technology for marine related business is studied, achieving data fusion, technology fusion, and interaction fusion between business systems and application scenarios. Based on the fusion architecture, multiple applications of intelligent control of the ocean in Zhejiang province are integrated and tested.

Key words: GIS, fusion technology, fusion application, intelligent site selection, intelligent marine, marine digital