符号构成元素设计及其在专题地图制图中的应用

在地图传输论的基础上，针对地图制图提出符号构成元素的概念，总结出符号构成元素设计的模式为叠置和相加、强化和减弱、拉伸和压缩、选择和组合．并以一幅专题地图设计的实例，说明专题地图设计的重心应该放在符号构成元素的选择、变化和联合上．符号构成元素设计突破了传统的专题内容表示方法的束缚，提的专题地图制图水平．

Design of symbolic constitution elements and it's application of thematic mapping

Based on cartographic communication theory, the symbolic constitution elements are put forward 9 such as position, shape, colour, brightness, size, texture 9 direction and notation. The designing models of symbolic constitution elements are piling and adding, strengthening and weakening, extending and condensing, selection and constitution. A example of the atlas of Xi'an is given to show that the focal point of thematic mapping are some forms of the symbolic constitution elements, such as the selection, change and association. It is very important that the design of symbolic constitution elements breaks through the binding of traditional expression of thematic factors so as to increase design level of thematic mapping.