Brief introduction of beautiful Yunnan

Yunnan, referred to as Yun (Yunnan) for short, is located in the southwest border of China. The Tropic of Cancer runs through the southern part of Yunnan Province, belonging to low latitude inland areas, bordering Guizhou and Guangxi in the east, Sichuan in the north, Tibet in the northwest, Myanmar in the west and Laos and Vietnam in the south. There are 25 border counties in Yunnan bordering Myanmar, Laos and Vietnam, with a border of 4,060 kilometers.

Yunnan is one of the important cradles of human civilization. Yuanmou, who lived 6.5438+0.7 million years ago, was the earliest human being discovered in China and Asia. During the Warring States period, this was the place where Yunnan tribes lived. Yunnan is the south of colorful clouds, colorful Yunnan, another way of saying it is named because it is located in the south of Yunling.

The total land area of Yunnan is 394 1 10,000 square kilometers, accounting for 4. 1% of the total land area of China, and the total population is 47.705 million (20 16), ranking eighth in China. It is the province with the largest number of ethnic groups in China, with 8 cities and 8 ethnic autonomous prefectures under its jurisdiction.

Extended data:

Geographical environment of Yunnan:

1 location

The total area of Yunnan Province is about 390,000 square kilometers, accounting for 4. 1 1% of the national area, ranking eighth among the provincial administrative regions in China. The Tropic of Cancer runs through the south of the province. Guangxi Zhuang Autonomous Region and Guizhou Province in the east, Sichuan Province in the north and Xizang Autonomous Region in the northwest. The border of Yunnan is 4060 kilometers long and borders three countries: Myanmar in the west (Ruili is the main port), Laos in the south (Mohan is the main port) and Vietnam in the southeast (Hekou is the main port).

2 climate

There are seven climate types in Yunnan province, including north tropical zone, south subtropical zone, middle subtropical zone, north subtropical zone, warm temperate zone, middle temperate zone and plateau climate zone. ? The climate in Yunnan is characterized by low latitude climate, monsoon climate and mountain plain climate. Its main performance is:

3 Regional differences and vertical changes of climate

The latitude of Yunnan is related to altitude. From the latitude point of view, its location is only equivalent to the geographical latitude from Leizhou Peninsula to Fujian, Jiangxi, Hunan and Guizhou. However, due to the high terrain in the north and low terrain in the south, the height difference between north and south reaches 6663.6m, which greatly aggravates the temperature difference caused by latitude factors in the whole province. This combination of high latitude and high altitude, low latitude and low altitude is consistent, that is, the increase of latitude in the horizontal direction coincides with the increase of altitude in the vertical direction. Except Jinsha River Valley and Yuanjiang River Valley, the annual average temperature rises from north to south, with an average temperature of about 5 ~ 24℃ and a temperature difference of about 19℃.

Due to the influence of topography and different weather systems, the zonal distribution law of temperature in the whole province often has special circumstances, and the phenomenon of "hot in the north and cool in the south" appears. Especially in the vertical distribution, due to the mountainous territory, the river bed is constantly eroded, resulting in high mountains and deep valleys. From the valley to the top of the mountain, the climate types are different due to the height rise. Generally speaking, the temperature will drop by about 0.6℃ every time the plateau rises 100 meters. ..

References:

Baidu Encyclopedia-Yunnan (People's Republic of China (PRC) Provincial Administrative Region)