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介绍了动态地理信息系统(TGIS)的概念及研究进展,提出和界定了与TGIS相关的几个重要术语(包括比例尺、尺度、分辨率);对TGIS发展概况,TGIS时空特征和TGIS数据构建方法,TGIS在水土保持研究中应用的几个主要方面———土地利用时空动态分析、试验观测数据表面模型建立与分析等进行了讨论。提出了TGIS研究中几个重要问题,包括:时间空间精度评估和其不确定性,元数据标准等。
Introduced the concept and research progress of TGIS, proposed and defined several important terms related to TGIS (including scale, scale and resolution); analyzed the development of TGIS, TGIS spatio-temporal features and TGIS data construction method , TGIS in soil and water conservation research in the application of several major aspects of land-use dynamic analysis of space-time, experimental observation data surface model establishment and analysis were discussed. Several important issues in TGIS research are proposed, including the evaluation of time-space accuracy and its uncertainty, metadata standards and so on.