Debris flows and landslides always cause
serious hazards in Taiwan because of
Taiwan’s geological, heavy rainfall and also
typhoons. This research mainly focus on
analyze the morphologic characteristics of
landslides from aerial photo interpretation of
Chenyoulan river, we would like to discus the
characteristics, distribution, and evolution of
those. 921 earthquake and the typhoon Toroji
in 2001 stroke that place severely.
