中文摘要：

针对几何图形变化对时空变化进行描述研究中较少考虑形状、结构等空间形态特征在变化语义描述中发挥的重要作用这一问题,该文针对河流要素的空间形态特征,总结了7个形态特征描述子,并基于此给出河流形态特征变化的基本类型库,通过构建形态特征变化与几何变化间的映射关系,从语义层面解释了几何变化在现实世界中代表的意义,为时空变化描述和时空分析提供了一种思路。

英文摘要：

Currently description of space-tempo changes is mainly from the point of geometry and shape and structure is seldom considered,where S plays an important role.Aiming at the spatial elements of river morphology,the seven morphological descriptors were summed up and morphological characteristics of the river was given based on this fundamental change in the type library.Geometry changes in the real world were explained at the semantic level by building a mapping relationship between geometry changes,which provided a new way of temporal analysis and temporal spatial variation describing.