Distribution Compartment Definition of Arid Valley along Bailongjiang River
According to the technical standard of dry valley partition , the boundary and area of the dry valley in Bailongjing River of Gansu province were surveyed and defined by using the combination ap -proach of “3S” technology ( GPS, GIS and RS) and the ground survey.Results showed that the dry val-ley mainly distributed in Gannan and Longnan city of south-east Gansu province with the altitude from 700 m to 2200 m, and the area was 271214 hm2.
arid valley in Bailongjing Rivercompartment and definitionareadistribution Province
NETL
NSTL
万方数据
维普
