Published on Jan 26, 2017Rising temperatures will also change how permafrost affects the land. As the active layer becomes thicker, the landscape may change. The ground can become weak. In hilly areas, thawing can cause landslides. In some areas, thawing changes the landscape, creating slumping ground, unstable forests, and shallow lakes. These landforms are examples of thermokarst features.
Without permafrost, water would drain away or evaporate into the air. Wetlands would dry up. Fewer plants would grow, and with reduced resources, fewer animals would be able to survive. People may also find it harder to find water and food in regions where permafrost has disappeared.