1:1000 000 digital geomorphologic mapping methodology based on RS and GIS:taking J-48 for example
Cheng Weiming · Journal of Lanzhou University · 2009
On the basis of the summary of previous geomorphologic mapping research,J-48 was used as an example to discuss two main aspects of the 1:1000 000 digital geomorphologic mapping in China:one is the mapping technology and method,the other is the mapping process and standardization.Our focus was on the digital geomorphologic mapping technology and several key issues,mainly including the relationship between remote sensing images and the assistant maps calculated from DEM,the relationship between geomorphologic types and relief amplitude,the geomorphologic borderline definition and the scale selection of ETM+ image interpretation.Our research will provide both a theoretical basis and practical application for nationwide geomorphologic mapping of 1:1000 000 in China.