| In the light of the difficulty and high cost for scattered geoheritage protection, the needs of its online expression are analyzed and clarified from the perspective of public users, management institutions, domain experts and technicians. By integrating the theories and methods of different disciplines including geology, GIS, computer, and so on, an online expression model of scattered geoheritages, the ″Five-layer Online Expression Model″ and its framework, is proposed. Its content, data and key techniques are analyzed emphatically. Taking Mount Yuelu Scenic Area as an example, its prototype is designed in aspects of function, database, interface and technical environment, and implemented with functions of the online directory query, geoheritage browsing and volunteer information collection. The validity and feasibility of the ″Five-layer Online Expression Model″ and its key techniques are of practical significance to the deep integration of geoheritages and the Internet. |