Analysis On the Driving Force of the Permafrost Degeneration in Daxinganling

Daxinganling is the largest virgin forest in north-east of China,and is the unique cool-temperate conifer forest in China.In the paper,the driving forces of permafrost degradation were analyzed by the aspests of climate warming and human being activity,and the main factors that affect the permafrost degeneration in Daxinganling were disclosed.