THE CHARACTERISTICS OF AEOLIAN SANDY LANDFORM IN ANCIENT YELLOW RIVER COURSE AREA AT NORTHERN HENAN PROVINCE

By aerial photograph interpretation and field expedition, the sandy land distributing regularity in ancient Yellow River course area at Northern Henan province was analysed and the sub types of aeolian sandy landform have been divided from shape genesis angle. Controlled by the geological structure of rise and depression inter distributing in NNE direction, the types of wind erosion landform exist no difference, while that of wind deposition are various. In the development of aeolian sandy landform, wind and water functions take place alternatively. The scale of aeolian sandy landform development was limited by the bio climatic condition and sand source. The heights of wind doposition landform are no more than 10 m in general.