What is the beneficial effect of Kazakh herdsmen's transition back and forth on the development of local animal husbandry?

First, the climate. Due to the special climate in Tianshan mountain area, the northern foot of Tianshan mountain will be very cold in winter and the snow will be thick, so it is impossible to graze. In order to ensure that the sheep have enough food, we must find a place where there is little or no snow to graze. Secondly, the grass in the grassland can recuperate, and the grassland will not be degraded because of overgrazing. Third, sheep will leave feces wherever they go, and the feces will be decomposed into nutrients for grass to grow, but it takes time to decompose the feces, right?