重庆市滑坡灾害时空特征分析

Analysis of Temporal and Spatial Characteristics of Landslide Disaster in Chongqing

重庆市是滑坡灾害高发的城市，滑坡灾害每年都会造成大量的人员伤亡和经济损失。本文结合历年滑坡统计资料，基于GIS平台，分析重庆市滑坡灾害的时空分布特征。自1980年起，重庆发生滑坡的次数明显增加，且集中发生在5～9月，尤其是7月。80％以上的滑坡为降雨引发，其次是自然灾害和人类活动，人类活动诱发滑坡灾害增长速度最快。重庆滑坡密度大的地区为市区以及万州区、忠县等三峡库区核心地带，滑坡高发地区有东北向西南方向变化的趋势。

Chongqing is a city with a high incidence of landslide disaster, which causes a large number of casualties and economic los- ses every year. Based on the historical records of landslide disaster, this paper analysis the spatial -temporal characteristics of land- shde in Chongqing. Since 1980, the number of landslide in Chongqing has increased significantly, and the increase mostly occurred in May to September, especially in July. More than 80% of the landslides are triggered by rainfall, while other influencing factors are nature disasters and human activities. The high density of landslide in Chongqing are the urban areas and Wanzhou District as well as Zhongxian segment in the Three Gorges area. The high - occurence disaster zone for landslides is changed from the northeast to south- west.