基于GIS的北京市不同地类规模分布特征分析

采用GIS技术,结合景观格局模型,以北京市第二次土地利用现状调查(简称二次详查)数据成果为基础,揭示了北京市不同地类规模分布特征。通过对不同土地利用分区研究结果表明:(1)各地类在远郊平原区的比重和密度最大;(2)各地类用地规模较小,绝大部分分布在0．06-6．7hm~2之间;(3)近郊区的耕地和园地规模较小,分布比较零散;远郊平原区的农村居民点在规模分布上出现了一些规模较大的农村居民点;独立工矿规模比较均匀,远郊山区规模最小,分布比较分散。

THE SCALE DISTRIBUTION CHARACTERISTICS OF BEIJING DIFFERENT LAND USE TYPE BY GIS

Land use current situation in Beijing was surveyed for the second round.According to the administra- tive division,the district was divided into four land-use subarea.Based on it,farmland,garden plot,rural set- tlement,independent industry were withdrawn.The distributing characteristics and dynamic changes of the four lands,combin were cuvahied and theu the scale characteristics with the landscape pattern model.The research results showed that:(1)The proportions and density of all classes in the area of far suburb were more than that in the other areas.(2)The average area of all classes were small and the area of the majority was 0.06-6.7hm~2. (3)The farmland and garden plot were small scale and scattered in near suburban area.The scale of some of vil- lage residents in the plain of far suburb was relative large,while that in the mountain of far suburb was relative small due to the limit of terrain,environment and economy.The scale of independent industry was relative sym- metrical and small