From the cultivated land and pasture at the foot of the mountain to the snow-covered area all year round, there are broad-leaved forest belt, mixed forest belt, coniferous forest belt, alpine grassland and alpine rock exposed belt in turn. Because of the relationship between height and slope direction, the vertical height of the natural belt on the north slope and the south slope is different. Generally, the south slope of broad-leaved forest belt is 800 ~ 1 0,800 meters, and the north slope is 800 ~ 1 0,200 meters. South slope of coniferous forest belt 1, 800 ~ 2,000m, north slope 1, 200 ~ 1, 000m, south slope of alpine grassland, 2000 ~ 2,500m, and north slope 1, 800 ~ 2. The exposed rock zone is 2500 ~ 3000m on the south slope and 2000 ~ 2500m on the north slope; The annual snow belt covers more than 3,000 meters on the south slope and 2,500 meters on the north slope. The overall change is that the height of each natural belt is higher on the south slope than on the north slope. The main reason is that the western slope of the northern slope is greatly influenced by the west wind, with more precipitation and lower temperature, so the distribution height of each natural zone is lower than that of the southern slope; The south and east slopes are less affected by the west wind, with less precipitation and high temperature, and subtropical vegetation can be seen in the foothills.