地理学中所采用的表现模型多种多样，例如各种地图、航空和航天遥感图像、统计图表、剖面图等，但是地图是地学中使用最普遍、也是最重要的模型。从模型的特性和实质来看，-Geography in the model used in a variety of performance, such as the various maps, aerial and space remote sensing images, charts, profiles, etc., but the map is used to study the most common and most important model. Characteristics and substance from the model point of view,