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塔河林业局位于大兴安岭的北坡,地理位置为东经123°47′,北纬52°47′。落叶松是该地区的主要树种,是主要经营对象之一,其林分类型主要有:草类落叶松林,杜鹃落叶松林,杜香落叶松林,溪旁落叶松林和藓类落叶松林。由于该地区落叶松的林型特征比较明显,一般按林型经营是比较方便的。但是我们在该地区考察时发现,同一林型的落叶松其立地条件差异很大,往往包括不同的坡向、坡度、坡位等,例如,草类落叶松林其优势树高的生长差值达2.9—8.8 m,杜鹃落叶松林差值达2.1—6.9 m,杜香落叶松林
Tahe Forestry Bureau is located in the northern slope of Daxinganling, the geographical location of longitude 123 ° 47 ’, latitude 52 ° 47’. Larix is the main tree species in the area and is one of the main business objects. The main types of forest are: larch grass, rhododendron larch forest, larch forest, brook forest and moss larch forest. Due to the obvious larch forest characteristics in this area, it is more convenient for forest management in general. However, when we surveyed in the region, we found that the same forest type of larch has very different site conditions, and often includes different aspect, slope and slope position. For example, the growth difference of dominant tree height in grassland larch forests reaches 2.9-8.8 m, Rhododendron larch forest difference of 2.1-6.9 m, Fragrant larch forest