Up to now

1

203 landslides have been researched in Yangtze River Valley. Most of them distribute along with the up reaches of Yangtzi River on the western part of this valley in large scale and great number. The others are in the middle part of the valley

the major scales are small to middle

but on the slopes of the two banks of Yangtzi River in the section between Fuling and Nanjunguan

the large and the largest landslides with a purt of volume over thousands cubic meter are distributed. The eastern part is with fewer landslides

its major scales is in 10 to 100 thousands cubic meters. All of those mentioned above is from neotectonic action

stability of rock

shape of slope

rainfall intensity

the side erosion of river and the human activities. As the economy and engineering activity is increasing

the landslide event is tending to develop sharply.