Permafrost degeneration in the east of Qinghai-Xizang Plateau

The zoning boundaries of permafrost are theoretically determined from the relation between permafrost and modern climate in this paper. The boundary elevations are given in a profile. There are many phenomena demonstrating a common degeneration, such as buried frozen soil, pseudo-permafrost landforms, variations of patchy permafrost table, multigelation, and vegetation changing in different regions. The important conclusion is that a basic trend of the permafrost changing in the plateau is degeneration.