A Research On Information Mining Of The Loess Plateau Gully Based On DEM

The characteristic of gully is the main landform characteristic ofloess plateau. Applying the theories of GIS, Geomorphology, Hydrology and Systems Science, taking the Loess Plateau of North Shaanxi Province, China as the research area, this dissertation explored the basic theories and techniques of information mining about gully from DEMs and try to reveal the spatial distribution of the characteristic of gully in the area. Firstly, the main structure of information mining about gully has been ascertained in this dissertation. Secondly, the theory and techniques about gully's information mining has been discussed by six indexes. Some new academic concepts and correlative analysis approaches were firstly put forward. This will make deep and positive influence on developing the theory of the loess plateau and establishing the gully spectrum of the loess plateau. Finally, the above mentioned theory and techniques were used to analyse the characteristic of gully in different geomorphologic type areas of the Loess Plateau of North Shaanxi Province. Its spatial distribution was got and the main influencing factors are discussed.