alpine permafrost

Alpine permafrost is ground that remains frozen for two or more years and is found at lower latitudes but at high elevations, unlike Arctic permafrost which is found in widespread northern regions. This type of permafrost is known to exist in western China, the contiguous United States, and other mountainous areas globally.1

The presence of permafrost significantly impacts soil conditions. In Arctic tundra, permafrost hinders water drainage, leading to saturated, boggy ground during summer thaws. In contrast, alpine tundra soils tend to be drier due to steep topography and rapid drainage, although some alpine meadows retain moisture.2

Permafrost is sensitive to temperature changes. Thawing permafrost can disrupt the thermal equilibrium of the ground, leading to a thickened active layer and melting ice, which lowers the surface and reduces soil strength. This thawing process is exacerbated by human activities that disturb vegetation or snow cover. Climate change is also a major factor, with rising global temperatures leading to detectable changes in tundra ecosystems, including permafrost melt.34