落叶松——杜鹃林是大兴安岭林区分布最普遍的林型,其立木以落叶松为主,常混有少量白桦,在北坡的西里尼西河以北的林分中,也常混有樟子松。其下木以兴安杜鹃为主,其次为东北赤杨,在大兴安岭北坡,后者的成份往往增大。地被甚发育,盖度90%左右,少有低于50%者,以耐荫草本为主,如越桔、红花鹿蹄草、林萘草、二叶舞鹤草、大叶章、苔草、北极悬钩子等,平坦的小地形上常有片状分布的矶踯躅。土壤为山地棕色太加林土。林分更 Larch - Rhododendron forest is the most widely distributed in Daxinganling forest type of forest, its standing mainly larch, often mixed with a small amount of birch, in the northern slopes of the forest along the west of the Silignhe West also often mixed camphor Loose pine. The following wood to Xing An azalea, followed by Northeast Alder, the northern slopes of Daxinganling, the latter tends to increase the composition. The ground is very developed, covering about 90%, few less than 50%, mainly shade-tolerant, such as bilberry, safflower wintergreen, Lin Naphthalene, Aesculapius, big leaf chapter, Carex grass, Arctic hooks, flat small terrain is often distributed in the sandpiper 片. Soil is mountain brown too jungle soil. Stand more