<正>采用全站仪对野外设置的临时标准地测定4个角点的相对坐标值和每株树木的相对坐标值，根据数据的特点，提出了消除标准地边界效应计算聚集指数的方法，并利用此方法结合定位数据，对吉林蛟河东大坡自然保护区不同发育阶段的阔叶红松林群落中林木的空间分布格局进行分析。结果表明，该群落中先锋树种占相对优势的发育阶段，林木呈聚集分布；伴生树种占相对优势发育阶段和稳定群落阶段的林木则趋于随机分布。林木由聚集分布趋向随机分布，是阔叶红松林在发育过程中树种生物学特性、树种适应对策和干扰状况共同影响的结果。

In May 6, 1987, a catastrophic forest fire took place in Da Hinggan Mountains, which affected more than 1.33×105 hm2 of natural forest and produced a heterogeneous mosaic of burn severities and islands of unburned vegetatidn across the landscape. Due to natural succession and anthropogenic disturbance, after about ten years, the spatial pattern of the landscape in this area has changed greatly. In this paper,a typical area was selected as a case study,which is the Tuqiang forest bureau,including two forestry farms, the influence of the fire intensity on the change of the forest landscape pattern was analyzed in a landscape scale. The result showed that=the difference of fire intensity induces the change of natural environment factors such as seed source, soil physical and chemical character, and correspondingly decides the renovating and resumptive measures of forest landscape after the fire,and further affects the dynamic change trend of forest landscape structure. The study aims at offering scientific gist for reasonable management and development of forest resources after fire.