Landscape geochemistry features and evaluation for working method and technique of regional geochemical prospecting in Gansu Province

The paper analyzed geology and topography,as well as climate in Gansu Province in detail and divided Gansu into 6 geochemical landscapes on the basis of summarizing working methods of region geochemistry in 20 years in Gansu Bureau of Geological and Mineral.Through making statistic to working methods of region geochemistry past and analyzing data in existence and summarizing effect of looking for mine approx imately,we think working methods of region geochemistry of the 5 geochemical landscapes have more or less errors except sout heast Gansu Province,which is to be studied further.