Study of Earthquake Disaster Population Risk Based on GIS A Case Study of Wenchuan Earthquake Region

For the earthquake disaster frequently happened in china, it is necessary to do some research about risk analysis of earthquake. The paper analyzed major factors of earthquake disaster firstly, established earthquake disaster risk assessment model with data of earthquake disaster between 1966 to 2010 and determinated the value of three factors quantitatively. Finally, taking Wenchuan earthquake region as an example, used the spatial analyst function of ArcMap system, analyzed the risk of population in earthquake disaster and created the population risk distribution map with a division of population high risk areas.