大兴安岭北部多年冻土区植被对活动层厚度变化的响应

温理想,郭蒙,黄书博,于方冰,钟超,周粉粉

The response of vegetation to the change of active layer thickness in permafrost region of the north Greater Khingan Mountains

Lixiang WEN,Meng GUO,Shubo HUANG,Fangbing YU,Chao ZHONG,Fenfen ZHOU

表1 大兴安岭北部不同类型多年冻土特征［30］

Table 1 Distribution character of permafrost in the Greater Khingan Mountains［30］

冻土类型 面积/104 km2 年平均气温/℃ 年平均地温/℃ 连续程度/% 大片多年冻土 6.8 <-5.0 -3.5~-1.0 65~75 岛状融区多年冻土 4.4 -5.0~-3.0 -1.5~-0.5 50~60