关键词: 巴丹吉林沙漠, 沙丘形态, 示量指征, 测定

Abstract: The quantitative method for dune's morphology study is used popularied by more and more desert researchers. But dune's morphological parameters are mostly eastimated from topography map in the past years. Thus, more effective data cann't be obtained and studies to middle and small dunes become more difficult. In the paper, a method which makes use of stereo comparator to measure the dune's model is put forward. By this method, high accuracy parameters of dune's morphology such as length, wideth, height and diameter etc. can be obtained. The step of the method is that:at first, to put pairs of stereo mate on stereo comparator and to establish photogrammetric stereomodel of studied dune; then to measure and calculate the parameters of dune's morphology. The Badain Jaran Desert is famous for its giant megadune. Dune's mophology includes longitudinal sand ridge, crescent dune and barchan chain, complex dune, compound megadune and star dune. By appling the method put forward in the paper, the acuracy morphology parameters of these five types dune in the northern area of Badain Jaran Desert are obtained. The results provid reliable references about dune's dynamic evolution and forming mechanism etc.. The method is a simple and feasible scientific approach. Its acuracy is higher than that of the other methods before. A great of acuracy data can be got in the condition of no field investigation.

Key words: Badain Jaran Desert, Dune's morphology, Parameter, Measurement