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Thickness of Frozen Soil in Gaoping Town, Jingchuan County
The thickness of frozen soil in Gaoping Town, Jingchuan County is less than 60 cm.

Tundra, also known as permafrost, tundra or tundra, comes from the Sami language T ū ndra (tundra), which means "treeless plain". In physical geography, it refers to the environment where trees can't grow because of low temperature and short growing season; Geologically, it refers to all kinds of rocks and soils with ice below 0℃. Generally, it can be divided into short-term frozen soil (hours, days or even half a month), seasonal frozen soil (half a month to several months) and permafrost (more than a few years). Frozen soil is a state in which the frozen soil layer is below the freezing point of water for thousands of years or even tens of thousands of years. Permafrost, seasonal permafrost and short-term permafrost account for about 50% of the land area, of which permafrost accounts for 25% of the land area.