【摘要】 用点格局分布、混交度和大小比数3个林分空间结构参数,分析了长白山落叶松人工林与天然林木混交的林分空间结构。结果表明:①空间分布:入侵的天然树种呈现明显的聚集分布,落叶松除15m时的聚集分布外均呈现显著的随机分布,林分整体呈现小尺度的聚集分布,在大尺度下呈随机分布。②混交度:林分的混交度为0.84,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。③大小比数:落叶松占据了优势地位,入侵的天然树种冷杉优势最明显,榆树最不具优势。更多还原

【Abstract】 Using the three parameters(point distribution pattern,distribution of mingling and size differentiation) the spatial structure of artificial and natural mixed forest of Larix olgensis in Changbai mountains was analyzed.The results showed that:① Invaded natural species was in gathered distribution,in addition to the 15-meter Larix olgensis was in random distribution,in small-scale forest was in gathered distribution,in large-scale random distribution.② Mixed degree of stands was 0.84,which showed that it is a complicated forest community composed of different species in mixed structure state.③ Larix olgensis occupy a dominant position,advantage of the invaded natural Aiba nephrolepis was the most obvious,Ulmus pumila was the least .更多还原