长白山过伐林区云冷杉针阔混交林空间结构分析

用角尺度、混交度和大小比数3个林分空间结构参数,分析了长白山过伐林区云冷杉针阔混交林的空间结构。结果表明:该林分的平均角尺度为0.504,林木分布格局为随机分布,该林分的平均混交度为0.81。说明它是一个由不同树种呈现强度混交结构状态组成的复杂森林群落。针叶树种具有胸径和树高的优势,尤其是红松的直径和树高最突出。

Analysis on the Spatial Structure of the Spruce-Fir Mixed Stands of Coniferous and Broad-leaved Trees in the Over-logged Forest

Three parameters,which are neighborhood pattern,mingling and neighborhood comparison,are used to describe spatial structure of the spruce-fir mixed stands of coniferous and broad-leaved trees in the over-logged forest of Changbai Mountains.The neighborhood pattern of the stand is 0.504,which shows the distribution of trees in this stand is random;the average mingling in the stand is 0.81,which indicates the stand has the high mixed degree;the coniferous trees(esp.Korean pine) are dominant at DBH neighborhood comparison and height neighborhood comparison.