1:25万《毛乌素风沙地貌图》的编制

风沙地貌图是认识和研究沙漠（沙地）最基本的图件。毛乌素沙漠沙丘类型复杂多样，对毛乌素沙漠风沙地貌进行详细划分，编制《毛乌素风沙地貌图》对深入研究毛乌素沙漠风沙地貌成因、分布和演化规律具有重要意义。根据编图范围和印刷纸张的要求，将《毛乌素风沙地貌图》的比例尺确定为1∶25万。选用1∶10万地形图作为基础资料，并以1∶5万地形图和1∶20万地质图作为补充资料；专题内容资料以landset-8卫星影像为主，结合Google Earth影像对部分细节内容进行补充。在形态成因相关分析的基础上建立地貌分类体系，将毛乌素沙漠地貌划分为风成地貌、湖成地貌、流水地貌、干燥地貌、黄土地貌和其他等6类，其中风成地貌是本图重点展示的内容。根据毛乌素沙漠的地貌特征，采用图例系统和地貌晕渲相结合的方法表示毛乌素沙漠的具体地貌类型，其中图例系统包括底色、符号、代码和注记等多种表示方法，地貌晕渲的使用增强了地貌的立体感，使地图看起来更加美观。

Compilation of Geomorphic Map of the Mu Us Desert

Desert geomorphic map can provide the basic information for studying deserts. The dune types were complex in the Mu Us Desert, so it was important to divide aeolian landforms in detail and compile a geomorphic map of the Mu Us Desert. The map can help us to study the causes, distribution characteristics and evolution laws of aeolian landforms. The scale of the map was determined to be 1:250 000, considering the cartographic region to be shown and the required specification of printing paper. 1:100 000 topographic maps were selected as the basic data and 1:50 000 topographic maps and 1:200 000 geologic maps were selected as supplementary. The images provided by landset-8 and Google Earth were selected as the thematic contents. The geomorphic types were classified as aeolian landforms, lacustrine landforms, fluvial landforms, arid landforms, loess landforms and others. Aeolian landforms were the key elements to be manifested in the thematic map. Legend system and hill-shading were used to show the geomorphic types according to the topographical features of the Mu Us Desert. Legend system included many representing methods, such as colours, symbols, codes, notes and so on. Using hill-shading enhanced the stereo sense on the vision and made the map more beautiful.