崩塌、滑坡、泥石流灾害的分布范围占国土面积的44.8％,具有区域性分布规律。在西南地区的云南、四川、重庆、贵州,中南地区的湖北、湖南、广东、广西,西北地区的陕西、甘肃,华东地区的浙江、江西、福建等省发生的频度和危害程度最为严重。西南、西北地区的发育规模往往较大。东南部地区多发育浅层、小规模滑坡。在近年发生的各类突发性地质灾害中,滑坡占总数的65％,数量最多,其次是崩塌和泥石流,分别占总数的19％和12％。 Collapse, landslide, debris flow disaster distribution area accounts for 44.8% of the land area, with a regional distribution. In the southwestern regions of Yunnan, Sichuan, Chongqing, Guizhou and Central South China, the frequency and the harms of the provinces of Hubei, Hunan, Guangdong, Guangxi and northwestern Shaanxi, Gansu and East China, Zhejiang, Jiangxi and Fujian are the most serious. The scale of development in the southwest and northwest regions is often large. The southeastern region more than the development of shallow, small-scale landslide. Among various sudden geological disasters that have occurred in recent years, landslides account for 65% of the total number of landslides, followed by collapses and debris flows, accounting for 19% and 12% of the total respectively.