Liaocheng Prefecture is located in North China Plain with a long reclamation history of more than 10000 years. In this study the author applied data to explain the relationship between land use patter
Straight river is generally regarded as one of the typical river patterns in conventional classifications in terms of their channel plain landforms. However, ve
According to the principle of the eruption of debris flows, the new torrent classification techniques are brought forward. The torrent there can be divided into