大象传媒

The Darhad valley of Mongolia is surrounded by snow-capped mountains. The summers are never warm enough to thaw the land so permafrost limits the growing season. The nomads living in the valley can predict the carrying capacity of the land. They migrate south for the winter to avoid over-exhaustion of the land. The Mongolian government has tried to encourage permanent grazing, but the nomadic way of life is more suitable for this type of environment.