Traditional Culture Encyclopedia - Weather forecast - Is the beautiful Great Harmony in the Eastern Hemisphere or the Western Hemisphere?

Is the beautiful Great Harmony in the Eastern Hemisphere or the Western Hemisphere?

Beautiful Datong lies in the old hemisphere.

geographical position

Datong is located in the north of Shanxi Province, bordering Inner Mongolia in the north, looking at Hebei in the east, 380 kilometers away from Beijing and 352 kilometers away from Taiyuan in the south. It is actually the barrier of the capital, the gateway to the north of Shanxi Province, and the throat of Shanxi, Hebei and Inner Mongolia. It is a battleground for military strategists in past dynasties. Historically, Datong was once the capital of three generations and an important town of two dynasties. Before the Qing Dynasty, all famous soldiers were sent to guard it, which not only prevented foreign aggression, but also ensured the safety of the capital. It is called the "northern lock key". Today's Datong is the intersection of Beijing-Baotou-Tongpu railway, the starting point of Daqin railway, and the midpoint of Shenfu, Zhungeer emerging energy zone and Beijing-Tianjin-Tangshan developed industrial zone. It is the largest coal energy base and national historical and cultural city in contemporary China.

Because Datong is located in the eastern part of Central China, and its traffic is relatively developed, it not only has an important strategic position in the construction of coal energy base, but also has great potential in border trade with the Soviet Union and Mongolia.

Changes in circumstances

About two or three million years ago, Datong was a huge lake. Archaeologists call this lake "Datong Lake", which is a closed inland lake. At that time, the climate here was warm, with abundant rainfall and towering trees all over the lake. Wild horses, hairy rhinoceros and bighorn deer chase Mercedes-Benz here; Many stickleback and carp are playing freely in the lake. According to archaeological research, Datong Lake experienced numerous changes with the ups and downs of the earth's crust and the alternation of dry and wet, and finally disappeared quietly tens of thousands of years ago.

During the Northern Wei Dynasty, Li Daoyuan recorded the environmental conditions of Weidu in detail in Notes on Water Classics. "Yunzhong County Records" also records that the scenery of Datong is "dripping green and flowing Xia, and Kawahara wants to be charming. Grass is lush and sheep are scattered all over the place. ..... is fragrant, but the onions are cool. " All these show that Datong used to be a good place with rich vegetation and beautiful scenery.

Datong shanshui

Datong area is surrounded by mountains, including Cailiang Mountain, Mapu Mountain, Jinshan Mountain, Banren Mountain, Liuling Mountain, Chanfang Mountain, Qifeng Mountain, Xiyansi Mountain, Wuzhou Mountain, Leigong Mountain, Yehuling Mountain, Gushan Mountain and Fangshan Mountain, with Yinshan Mountain in the north and Heng Yue in the south. The altitude varies from 1000 meters to 2,000 meters. If you use the painter's brushwork of "Spring Mountain is as light as a smile", I am afraid it is difficult to reproduce this magnificent mountain. In addition, among the mountains, there are three gullies running through them, namely, Zhenchuan, Yungang and Kouquan, which have become the three main channels connecting cities.

There are as many as twenty rivers in Datong, large and small, which are spread all over the country like cattail fans, and all meet at Sanggan River. The main rivers are: Yu He River, Shili River, Kouquan River and Ganhe River, as well as the smaller Nihe River, Xixijian River, Yumu River, Sihe River, Zhenchuan River, Juanzi River and Kaishankou River. Because they are all seasonal rivers, the water flow in winter and summer is very different. Usually, the water is below the knee, and sometimes it even dries up. These trickles are short-term, and there is no saying that "thousands of miles of waves stack colored glasses". However, they are also unique because of their simplicity. In addition to rivers, there is Wenying Lake in the east of Datong, with an open lake (about 6000 mu) and a mirror. It is not only the main fish producing area in Datong, but also a beautiful lakeside tourist attraction. In addition, there are several good places near mountains and rivers, such as Zhaojiayao Reservoir in Xinrong District and Shuiquan Bay (formerly known as Liu Quan Bay) in the south of the city.

Weng Juan, a poet in the Song Dynasty, once left such a poem: "Come to the mountains to see wild water, and suddenly see the green hills under the water." (Wang Ye) I hope people can take time out, get out of the city walls, make friends with Datong mountains and rivers, and appreciate the interest of nature.

Datong climate

Datong is located in the temperate continental monsoon climate zone, affected by the monsoon, with four distinct seasons, which makes people fondle it.

In spring, the temperature rises rapidly, with an average temperature of 6.5~9. 1℃, sometimes warm and sometimes cold. It is windy with little rain, and the average precipitation is only 56. 1mm, accounting for 14.6% of the annual precipitation. After the Three-North Shelterbelt Project began to take shape, the "yellow fog" (sandstorm) weather in Datong in spring decreased. Once the dust is flying, girls and children often wrap their heads up and down with thin and transparent gauze towels, forming a colorful flow. Spring in the south is often accompanied by crisp light rain; In spring in Datong, however, it often snows and melts snow.

The climate in summer is mild, with an average temperature of 19~2 1.8℃ and concentrated rainfall, with an average precipitation of 246.9mm, accounting for 64.3% of the annual precipitation. People often say that "it's always spring when it's colorful", but it's summer when it's colorful. Datong is cool and comfortable in summer, with a soft southeast wind. There are more tourists visiting this summer resort than in summer.

After autumn comes, the temperature drops gradually, with an average temperature of 5.8~8.4℃ and an average precipitation of 72.96 mm, accounting for 19% of the annual precipitation. At this time, Wan Li is clear and crisp in autumn. Slightly cold, quite comfortable. Frost usually occurs in late September (the final frost period is April of the following year).

Winter is longer than spring, summer and autumn. For more than four months, the northwest wind prevailed, the days were short and the weather was cold. The average temperature is between-12.8~-6.3℃, the highest in Leng Yue is 65438+ 10 month, and the average temperature is-1.3℃. There will be several snows in winter, which will make the whole city wrapped in silver. The average precipitation is 8.06mm, accounting for 2. 1% of the annual precipitation. Although it is cold outside this season, the extreme minimum temperature actually reached-29. 1967 65438+ 10/5 in June, but the local people's work, study, entertainment places and houses are all heated by heaters or stoves, and the indoor is very warm, but it is more pleasant than the south.

The average elevation of Bohai Sea is1056m, and its four seasons change in this way, which not only reduces monotony, increases interest, and brings people the stimulation of seasonal change, but also has less interference from miscellaneous bacteria, making it an ideal environment for fermentation industry. There is a big temperature difference between day and night here, and there are many alpine crops and medicinal materials. Although the output is small, the quality is good. The annual sunshine hours are long, and the average sunshine hours are 282 1.6 hours, so the utilization potential of light energy is considerable.