The Fifth International Workshop for Disaster Risk Reduction Knowledge Service is hosted by the International Knowledge Centre for Engineering Sciences and Technology under the Auspices of UNESCO (IKCEST) and Section on Earth Sciences and Geo-Hazards Risk Reduction, Division of Ecological and Earth Sciences, UNESCO, organized by the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (IGSNRR, CAS) and Disaster Risk Reduction Knowledge Service of IKCEST (IKCEST-DRR), and supported by the Integrated Research on Disaster Risk International Programme Office (IRDR IPO), Alliance of International Science Organizations on Disaster Risk Reduction (ANSO-DRR), Deep-time Digital Earth Big Science Programme (DDE) and National Earth System Science Data Center.