Mountain In Yunnan Province, The Developmental Characteristics Of Geological Disasters And Hazards

Interpretating fresh RS images and introducing half-measurable method, I divide Yunnan province into 5 areas where geological disasters easy occur, 3 areas where geological disasters relatively easy occur and 3 areas where geological disasters occur by acciden,on the basis of former data and other information. The 5 areas are Deqin-Lushui-Yongsheng-Ninglang, Shuifu-Qiaojia-Dongchuan, Lianghe-Yingjiang, Nanjian-Yunxian and Luchun-Yuanyang-Jinping-Hekou-Malipo. The 3 areas where geological disasters relatively easy arises are Dolong River in Gongshan, shangrila and Dali-Linchang-Huize-Zhenxiong. The 3 areas geological disasters occur by accident are Ruili, Ximeng-Simao-Jinghong and Xuanwei-Wenshan -Funing.From 1949 to 2000, the geological disasters had resulted in 9300 people death, 21000 wounded people and direct economic loss $7200 millions. Since 1990, the annualy direct economic loss induced by geological disasters has amounted to $420 millions and annualy person death amounted to 210. Geological disasters endanger towns, villages, highway, mines, water resourse facilities and farmland, Geological disasters worsen farmers' living environment.The database has been erected, which includes information of 1778 geological disaster spots, 36 counties, 64 towns, 56 mines and 153 preventing projects.It will be very helpful to use landresource in reasons, map out geological disasters plans, promote social and economic sustained development.