The new methodology of geomorphologic zonalization in Xinjiang based on geographical grid;

And from this point of view,the alluvial fan should be separated from the"tilt piedmont plain area"of the traditional geomorphologic zonalization,and should be combined with the alluvial flood plain,named as the"central alluvial fan-alluvial flood plain areas",which seems to meet the requirement of rational economy allocation all the better.

Depth of annual runoff and annual erosion modulus were chosen as the indicators of soil and water loss,and the succession of soil and water loss in four typical morphogenetic zones in the central Loess Plateau during last 50 years was analyzed by Fourier transform.

Method of cluster analysis and Bayes distinguish on regional landforms;