Will there be altitude sickness in Yunnan?

In a few places, altitude sickness is caused by the human body rapidly entering an altitude of more than 3000 meters.

Northern Yunnan is the southern extension of the Qinghai-Tibet Plateau, with an altitude of about 3,000-4,000 meters. There are huge mountain systems such as Gaoligong Mountain, Nvshan Mountain and Yunling Mountain, and the Nujiang River, Lancang River and Jinsha River are staggered from north to south. The three rivers flow in parallel, with staggered valleys and steep terrain.

In the south is the Hengduan Mountains, which are below 3000 meters above sea level, mainly Ailao Mountain, Wuliang Mountain and Bangma Mountain. The terrain gradually drops to the south and southwest, and the valley gradually widens. On the southern and southwestern borders, the terrain is gradually gentle, the mountains are short, and there are many wide valley basins. The altitude is about 800 ~ 1000 meters, and it drops below 500 meters in some areas, mainly distributed in tropical and subtropical areas.

Extended data:

I. Location and background

Yunnan is located in the southwest border of China, with an east longitude of 97 31',a north latitude of1061'and a north latitude of 218'. The Tropic of Cancer runs through the south of the province, with low terrain. The maximum horizontal distance from east to west in the province is 864.9 kilometers, and the maximum vertical distance from north to south is 990 kilometers. The total land area of the province is 394 1 10,000 square kilometers.

It borders Guizhou Province and Guangxi Zhuang Autonomous Region in the east, Sichuan Province in the north, Xizang Autonomous Region in the northwest, Myanmar in the west and Laos and Viet Nam in the south. There are 25 border counties in Yunnan bordering Myanmar, Laos and Vietnam respectively, with a border length of 4,060 km, including China-Myanmar border 1.997 km, China-Laos border 7 10 km and China-Vietnam border 1.353 km.

Second, the terrain.

Yunnan belongs to mountainous plateau topography, in which the middle altitude area of 1000-3500m accounts for 87.2 1% of the whole province's land area, and most of Yunnan Province is located in the middle altitude area. The area below the slope of 25 degrees accounts for 56.46% of the land area. In terms of landform types, the areas of plains, terraces, hills and mountains account for 4.85%, 1.55%, 4.96% and 88.64% respectively.

The terrain is bounded by Yuanjiang Valley and the wide valley in the southern section of Yunling Mountain Range, which is divided into two major terrain areas: east and west. The eastern and central Yunnan Plateau is a part of Yunnan-Guizhou Plateau, with an average elevation of about 2000 meters. It is characterized by gently undulating low mountains and round hills, and various types of karst landforms are developed. Mountains and canyons alternate in the west, and the terrain is steep. The relative height difference between mountains and canyons exceeds 1 000m.

Baidu encyclopedia-altitude sickness

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