The zoning' boundaries of permafrost are theoretically determined fromthe relation between permafrost and modern climate in this paper. The boundary elevations are given in a profile. There are many phenomena demo...The zoning' boundaries of permafrost are theoretically determined fromthe relation between permafrost and modern climate in this paper. The boundary elevations are given in a profile. There are many phenomena demonstrating a commondegeneration, such as buried frozen soil, pseudo--permafrost land forms,variations ofpatchy permafrost table, multigelation, and vegetation changing in different regions.The important conclusion is that a basic trend of the permafrost changing in theplateau is degeneration.展开更多
文摘The zoning' boundaries of permafrost are theoretically determined fromthe relation between permafrost and modern climate in this paper. The boundary elevations are given in a profile. There are many phenomena demonstrating a commondegeneration, such as buried frozen soil, pseudo--permafrost land forms,variations ofpatchy permafrost table, multigelation, and vegetation changing in different regions.The important conclusion is that a basic trend of the permafrost changing in theplateau is degeneration.
