基于GIS的微地形因子识别与提取

A GIS-based Method for Identifying and Extracting Micro-topography Factors

由于微地形对局地气候条件会产生显著影响,因而在输电线路设计冰区划分和覆冰模型构建中均需考虑微地形因子。针对GIS软件难以直接获取地形类别等微地形因子的问题,本文提出了利用GIS识别和提取微地形因子的方法,并通过实例论述了其可行性与有效性。

Due to the significant influence of micro-topography factors on local climate, micro-topography factors should be taken into account for the icing zone categorizing and icing model constructing. Micro-topography factors can hardly be obtained directly by existing GIS software at present. In view of this, A GIS-based method for identifying and extracting micro-topography factors was proposed, which was proved to be feasible and effective.