A SURVEY ON THE INTEGRATED DISASTER REDUCTION SERVICE IN BIG DATA ERA

In recent years, geospatial big data has attracted great attention from industry, academia, research and government sectors, and even has triggered a lot of industry changes. Geospatial big data for the integrated disaster reduction provides new ideas and methods for emergency management and decision making. At present, there are some problems in Chinese disaster reduction services. Too much emphasis has placed on decision-making and not on early warning. In addition, the technology, system and application integration of disaster reduction services is not enough. This paper analyses the concepts and characteristics of the integrated disaster reduction service, mainly reviews the key technologies in the integrated disaster reduction service, including integrated perception, location, integration and comprehensive scene simulation of emergency information such as disaster events, various disaster-bearing bodies and the disaster-pregnant environment, and knowledgeable disaster reduction services. Besides, the integrated disaster reduction system is introduced with the consideration of the demand for disaster prevention and reduction services.The developed system for the integrated disaster reduction services can solve the integrated perception, positioning, integration and simulation of the scene, and intellectualized disaster reduction services and other technical problems. Finally, the bottleneck problems and technical challenges of the integrated disaster reduction service are discussed.