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1.树木性状的多变性及其与生长的关系在同一树种中常有品种、变种和类型之分,因此个体之间往往存有很大差异。例如:在同一日本落叶松林分中,有的树1年生枝条带玫瑰色,有的则不带。从球果早期的颜色看,有红色、杂色、绿色之分;就球果体积而言有大、中、小之别。树冠也有稀、疏、密、宽、窄的不同。这些质量性状都在一定程度上反映着树木生长的差别。1974年我们在抚顺矿务局和睦林场对一片未经抚育的日本落叶松林分按树皮类型进行了调查,结果见表1。
1. The variability of tree traits and their relationship with the growth of species in the same tree species, varieties and types of points, so there are often very different individuals. For example, in the same Japanese larch forest stand, some trees have 1-year-old branches with rose color, while others do not. From the early color ball cones, there are red, variegated, green points; in terms of the volume of fruit there are big, medium and small differences. The crown is also thin, sparse, dense, wide and narrow different. These quality traits all reflect to some extent the differences of tree growth. In 1974, we conducted an investigation of an unswept Larix kaempferi forest by tree bark type at Fushun Mining Bureau and Mule Forestry Farm. The results are shown in Table 1.