Along the Belt and Road regions is a high incidence area of earthquakes, droughts, floods and other disasters. The disaster risk reduction is highly required, but the data and information service capabilities in the regions are relatively weak. For the need of the knowledge service of disaster risk reduction, this paper discusses the origin of the knowledge service and the main characteristics of the knowledge service system. A framework of the knowledge service for the disaster risk reduction is constructed, centered on the global disaster meta-database, the disaster risk reduction knowledge network and the portal of the knowledge service system. The disaster risk reduction knowledge service system (DRRKS) is established and the basic applications are analyzed, including the disaster metadata standard, the data product, the knowledge applications and the case sharing. The typical applications of the current disaster risk reduction knowledge service system in the area along the Belt and Road regions include the knowledge service application of the Belt and Road disaster environment data, the application of the thematic knowledge in the spatial-temporal display of the arable land drought level along the "Belt and Road" regions, the knowledge application of the spatial-temporal data service of the main historical disasters in the China-Mongolia-Russia Economic Corridor, the total factor data service knowledge application of the disaster-prevention environment land cover in Mongolia, and the knowledge application of the grassland yield in the China-Mongolia-Russia Economic Corridor of the Belt and Road. The future of the knowledge application may include six aspects: the disaster data management based on the knowledge organization, the disaster resource navigation based on the data sharing, the data-driven disaster information products, the artificial intelligence application in the disaster risk reduction, the emergency-oriented rapid disaster mapping and the application of social media data mining.

knowledge service  /  the Belt and Road  /  disaster risk reduction  /  knowledge service system