Reasons for the formation of four seasons change in Tianshan pasture
Tianshan Mountain is located in the northwest of China, with low temperature in winter. Herdsmen graze on the lower and warmer grasslands. Warming in spring, moving to the high grassland; In summer, the temperature in China is generally high, and herders move to alpine meadows and grasslands with higher altitude and lower temperature to graze; When the weather turns cold in autumn, herders move to grasslands at lower altitudes; Go back to the foothills pasture in winter and use the hoarded pasture for the winter.
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Tianshan grassland is famous for its vast area, abundant water, lush grass and suitable climate. There are many grasses in Tianshan grassland, which grow intensively, and the grasses vary from region to region: Artemisia and Cyperus are the main species in alpine areas, followed by miscellaneous grasses; Forest grassland is dominated by legumes and miscellaneous grasses; In low mountainous areas, foxtail grass, feather grass, Artemisia and astragalus are the main ones; Spring is also full of yellow, purple, white and red flowers.
The piedmont alluvial plain is mainly Artemisia, Kochia scoparia and short-lived Chenopodiaceae. Grass, Achnatherum splendens, Phragmites communis and Agropyron cristatum are dominant in the valley beach, followed by weeds. Due to the excellent forage quality in Tianshan Mountain, tens of millions of livestock have been raised. The famous Ilima, Barkhuma, Yanqi Horse, Xinjiang Yellow Cattle and Xinjiang Fine Wool Sheep all grow on Tianshan Grassland. The top of the mountain with lower temperature is used as summer pasture, and the foot of the mountain with higher temperature in winter is used as winter pasture.