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本文用地统计学与分形方法对中国东北样带中 1 6个主要树种 (属 )的空间分布特征进行分析得出 :山杨、蒙古栎、色木槭和白桦的斑块大小在 3 72km左右 ,红松、黄檗、枫桦、椴、胡桃楸、榆、水曲柳、花曲柳、黑桦、云杉、臭松和落叶松的斑块都在 1 0km以下。通过克里格方法得到各树种在样带中的分布区域 ,黑桦、山杨、椴、蒙古栎分布于整个研究区 ,大多数树种分布在 1 2 0°E～ 1 3 1°E之间 ,根据分布位置得到树种的耐旱能力等级。耐旱能力中等的黄檗、胡桃楸、花曲柳、榆和水曲柳的分维数最高 ,它们的空间结构比不耐旱与耐旱的树种复杂
In this paper, the spatial distribution characteristics of 16 major tree species in the northeast transects of China were analyzed by geostatistics and fractal methods. The results showed that the patch sizes of Populus davidiana, Quercus mongolica, Acer palmatum and Betula platyphylla were about 37 km, The patches of red pine, yellow barberry, maple birch, linden, walnut, elm, ash, willow, black birch, spruce, stinkbloom and larch are below 10 km. The distribution area of each species in the transect was obtained by Kriging method. Black birch, aspen, Tilia amurense and Quercus mongolica distributed throughout the study area. Most of the species distributed between 120 ° E ~ 131 ° E , According to the location of distribution of drought tolerance tree species level. The fractal dimension of Huangbai, Juglans mandshurica, Fraxinus mandshurica and Fraxinus mandshurica, which have moderate drought tolerance, is the highest, their spatial structure is more complex than that of the tree species which are not tolerant to drought and drought