干旱区生态环境制图的理论与方法 --以土地荒漠化图为例

土地荒漠化制图是生态环境专题制图的前沿领域，按照现代制图学的原理和土地荒漠化的分类体系，综合制图区域自然及人文要素的时空特征，应用遥感与GIS相结合的方法，编制了不同时期的专题类型图。新技术的应用，反映了信息化时代数字制图技术在土地荒漠化专题制图中的应用潜力，极大地丰富了专题制图学的内涵。同时，体现了专题地图高度的灵活性和强大的选择性，良好的现势性及动态性，制图过程的智能化及制图载体的多样化。本研究重点讨论了荒漠化类型的制图综合，专题要素的表现手法以及制图过程的数据挖掘等关键问题。

Theory and Methods of the Charting of Ecological Environment -A Case Study on the Charting of Land Desertification

Charting of land desertification is a forward domain of the thematic charting of ecological environment. According to the fundamentals of modern cartography and the classification system of land desertification, to chart the thematic maps of the different periods can reveal the great application potentials of the numerical charting technology in the thematic charting of land desertification by synthesizing the temporal and spatial characteristics of the natural and artificial factors and by combining the application of remote sensing and geographical information system (GIS). Which can greatly enrich the connotation of thematic cartography and materialize the high flexibility, strong selection, fine trend of the times and the dynamics of the thematic charting, intellection of charting process and diversity of the charting carriers. In this paper, some key issues, such as the charting synthesis of land desertification, expression techniques of the thematic factors, and data collection in the charting process, are discussed.