Distribution of Chinese natural disaster
（1）Coastal disaster zone:
typhoon, storm, rainstorm, flood, drought, seawater intrusion, earthquake
（2）Disaster along rivers：
rainstorm, drought, soil erosion, landslide, mud-rock flow
- ①Drought and flood: most frequent in lower reaches, followed by the middle reaches and minimum disasters in upper reaches.
- ②Landslide, mud-rock flow: most diatributed in upper reaches.
- ③Reasons: sharp reduction of forest area, development of urbanization and industrialization
（3）Mountain Hazards zone:
Earthquake, mud-rock flow, landslide and hail.
Map source: Atlas of Natural Disaster System in China