The authors reviewed the research of planation surface in recent years and commented on the development of method and theory about the planation surface. Some a
To describe the spatial relationship among the earth objects compactly, in this paper, we raised the concept of histo-variogram based on the analysis of the cha
The alpine tundra on Changbai Mountain was formed as a left-over ‘island' in higher elevations after the glacier retrieved from the mid-latitude of Northern He