Spatial pattern and influencing factors of landslide casualty events

摘要: Analysis of casualties due to landslides from 2000 2012 revealed that their spatial pattern was affected by terrain and other natural environmental factors, which resulted in a higher distribution landslide casualty events southern China than northern China. Hotspots landslide-generated were the western Sichuan mountainous area Yunnan-Guizhou Plateau region, southeast hilly area, part loess Tianshan Qilian Mountains. However, local patterns indicated also influenced economic activity factors. To quantitatively analyse influence environment human-economic Probability Model for Landslide Casualty Events (LCEC) built based on logistic regression analysis. The results showed relative relief, GDP growth rate, mean annual precipitation, fault zones, population density positively correlated with caused landslides. Notably, rate ranked only second relief as primary factors probability occurrence event increased 2.706 times increase 2.72%. In contrast, vegetation coverage negatively LCEC model then applied calculate each county there are 27 counties high but zero events. divided into three categories: poverty-stricken counties, mineral-rich real-estate overexploited counties; these key areas should be emphasized reducing risk.