小流域山洪灾害危险性分析之降雨指标选取的初步研究.pdf

第19卷第3期 Vol.19, No.3 2017年3月 Mar., 2017 引用格式：李华威,万庆.小流域山洪灾害危险性分析之降雨指标选取的初步研究[J].地球信息科学学报,2017,19(3):425-435. [ Li H W, Wang Q. 2017. Study on rainfall index selection for hazard analysis of mountain torrents disaster of small watersheds. Journal of Geo-informa- tion Science, 19(3):425-435. ] DOI:10.3724/SP.J.1047.2017.00425 小流域山洪灾害危险性分析之降雨指标选取的初步 研究 1,3 1,2,3* 李华威 ，万 庆 1. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室，北京 100101 ；2. 江苏省地理信息资源开发与 利用协同创新中心，南京 210023 ；3. 中国科学院大学，北京 100049 Study on Rainfall Index Selection for Hazard Analysis of Mountain Torrents Disaster of Small Watersheds LI Huawei1,3 and WAN Qing1,2,3* 1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 2. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China Abstract: Mountain torrents are one of the most dangerous weather-related natural disasters in the world. As the direct driving force and inducing factor of mountain torrent disasters, rainfall can be used as an indispensable in- dex in the hazard analysis of flash flood. In different study areas, the rainfall with different return periods and du- rations may affect mountain torrent disasters differently and would be therefore selected disparately for the haz- ard analysis. However, there is little quantitative research on the principles of rainfall index selection in the previ- ous literatures. Based on the small watershed map (1:50,000 scale), the rainstorm atlas and the spatial distribu- tion of mountain torrent