摘 要: | Longitudinal dunes,also known as linear dunes,are the most widespread of all dune types,which occupy1/2to2/3of the total area in the world sand seas.They mainly occur in the southern part of Africa,Arabian Peninsular,Australia,Central Asia and North Af-rica-Middle East regions[1],in China they mainly ap-pear in the Gurbantnggt Desert.Many researches have been done on wind dynamics of the sand dune and its relations with environmental conditions[2—9],but comprehensive studies on sand …
|