(一)自然条件和森林特点大兴安岭地区除少数山岭有海拔1530米和1087米的山峰外,一般属丘陵山地,海拔300～400～600米不等,属我国唯一的寒温带。根据气象站(海拔300米左右)20多年的纪录,全年平均温度为—2°～—4.9℃,绝对最低温度 (A) of the natural conditions and forest characteristics Daxinganling region in addition to a few mountains have 1530 meters above sea level and 1087 meters of peaks, are generally hilly mountains, an elevation of 300 ~ 400 ~ 600 meters, is China’s only cold temperate zone. According to the meteorological station (about 300 meters above sea level) for more than 20 years, the annual average temperature is -2 ° -4.9 ° C and the absolute minimum temperature