XIA Jun, ZHAN Chesheng, ZENG Sidong, ZOU Lei, SHE Dunxian, ZUO Qiting

Abstract: The protection of the Yangtze River is one of the most important national strategies in the new era. The green development of the Yangtze River Economic Belt which linked by water is facing many problems in the systematic management of the upper-middle-lower reaches and the left-right banks of the basin, as well as the land-sea integration, the supervision of the implementation of the Yangtze River Protection Law, and the comprehensive planning and management of the river basin under changing environment. Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences and National Natural Science Foundation of China, the idea of "Yangtze River Simulator" was proposed by the author's research team in 2019. This paper systematically summarizes the concept and connotation of the Yangtze River Simulator, and constructs its outline framework after a lot of work. It is believed that the essence of the Yangtze River Simulator is a river basin simulation system and scientific device developed by taking the Yangtze River Basin as the object and the water cycle of the basin as the link, coupling the natural process with the human process. On the basis of analyzing the functions, key scientific problems and subject requirements of the Yangtze River Simulator, the theoretical system of the Yangtze River Simulator construction is proposed, which mainly includes Earth System Science Theory, Economic and Social Science Theory, and Information Science Theory. The method system for the Yangtze River Simulator is constructed by incorporating five key technologies (intelligent perception technology, data fusion technology, computing support technology, emergency processing technology, service construction technology) and four main methods (computing resource allocation method, numerical simulation calculation method, artificial intelligence simulation method and optimization decision-making control method). In addition, the service system of the Yangtze River Simulator is summarized, which is oriented to six major services, namely scientific and technological innovation services, comprehensive management services, government decision-making services, emergency management services, public cultural services, and data application services. Finally, the application examples of the Yangtze River Simulator V1.0 that have been developed are introduced. The Yangtze River Simulator can provide important scientific simulation and support tools for scientific management and decision-making in many fields such as water conservancy, environmental protection, urban construction, agriculture, industrial layout, natural disaster prevention, and public incident prevention and control. It also provides reference for the research and development of river simulators in the Yellow River and other river basins in China.

Keywords: Yangtze River Simulator, theoretical system, method system, service system, Yangtze River Economic Belt