Relationship Between Frozen Soil Together with Its Water-Heat Process and Ecological Environment in the Tibetan Plateau

The relationship between frozen soil together with its water-heat process and vegetation-growing environment is discussed according to the monitored data of active layers in the Tibetan Plateau. The water-heat process in seasonal frozen soil is compared with that in permafrost. Freezing and thawing process changing with meadow ecology is discussed. Analysis result shows that vegetation ecology in cold region has an interactive relationship with frozen soil and its water-heat process. Frozen soil and its water-heat process not only control the change of surface state, but also affect the vegetation-growing extent. They have an extensive relationship of interaction. If the surface condition and the balance between vegetation growth and water-heat in frozen soil are destroyed, there present desertification.