长白山区天然蒙古栎林空间分布规律的研究

Study on the Spatial Distribution of Natural Quercus mongolica Forest in Changbai Mountain

从吉林省红石林业局森林资源调查小班中筛选出天然蒙古栎小班,利用ArcGis对蒙古栎小班进行空间热点分析。结果表明:显著热点分布区蒙古栎小班3193个。其中,在不同坡度级上主要分布在坡度适中的斜坡,小班个数可达1506个;在不同坡位上主要集中在坡中,小班个数可达1290个;在不同坡向上主要分布在东南、南和西南等阳坡、半阳坡,小班个数可达1437个;多分布在海拔300~650 m,小班个数可达1319个。因而,天然蒙古栎林适宜的立地条件为坡度斜缓的坡中、海拔300~650 m之间的阳坡或半阳坡。

Classes of natural Quercus mongolica were chosen from forest resources investigation classes of Hongshi Forestry Bureau.The spatial hotspot of the classes were analyzed based on ArcGis.The results showed that there were 3193 classes in the significant hotspot distribution area.The moderate slope was the most suitable slope level,the number of classes was 1506.The middle hillside was the most suitable slope position,and the number of classes was 1290.The sunny slope,half sunny slope were the major distribution areas,including southeast,south and southwest,the number of classes was 1437.The most suitable elevation distributed between 300 m and 650 m,and the number of classes was 1319.The suitable conditions for the natural Quercus mongolica were moderate slope,middle hillside,sunny slope or half sunny slope,elevation distributed between 300 m and 650 m.