中文摘要：

以内蒙古克什克腾旗镇郊林场为研究区域,在ArcGIS软件支持下,通过提取地形因子（高程、坡度、坡向）,分析了研究区域内森林主要树种在地形因子各梯度的分布比重和分布特征,以及各树种的动态变化特征.

英文摘要：

The town rural forest of Inner Mongolia Keshiketeng County as a research area,and suppor- ted by ArcGIS software,completes the extraction of some topographic factors and calculates and discusses the distribution gradient of topography factors （elevation, slope, aspect ） of the main forest species and dis- tribution and dynamic characteristics of each specie in the research area.