Yanggao County, Datong City, Shanxi Province

Yanggao County Yanggao County is a county under the jurisdiction of Datong City, Shanxi Province. In the Western Han Dynasty, Gaoliu county was set up. In the Jin Dynasty, it was renamed Baideng county. In the third year of Yongzheng reign of the Qing Dynasty (1725 AD), it was renamed now. Yanggao is located in the northeast of Shanxi Province. It is adjacent to Inner Mongolia Autonomous Region by the Great Wall in the north, Hunyuan and Guangling in the south, Yunzhou in the west, Tianzhen county and Yangyuan in Hebei Province in the East, with a total area of 1678 square kilometers.

In 2009, Gaoliu County site was found near liguantun village, Longquan Town, 1.5km away from Yanggao County. Gaoliu County site is about 1000 meters long from east to west and 620 meters wide from south to north, covering an area of 620000 square meters. It is a cultural heritage of the Han Dynasty.

In 2010, the GDP of Yanggao County was 1561.46 million yuan, an increase of 23.7% over 2009.

On September 25, 2018, it won the honorary title of "2018 e-commerce into rural comprehensive demonstration county" of the Ministry of Commerce. On April 18, 2019, the people's Government of Shanxi Province approved Yanggao County to withdraw from the poverty-stricken county.

Evolution of organizational system

In the Western Han Dynasty, Gaoliu county was set up, which belonged to Daijun county and was governed by Duwei in the West.

At the end of the Eastern Han Dynasty, the county was ruled by the county.

Jin restoration, still known as high willow.

In Yongxi year of the Northern Wei Dynasty, Gaoliu county was established in the county.

In the Northern Qi Dynasty, all prefectures and counties were abolished.

Liao set Changqing County, Datong Prefecture.

In the seventh year of Jin Dading (1167), it was renamed Baideng County, where the Baideng river ran through, so it was named.

In the second year of the Yuan Dynasty (1265), Baideng county was abandoned as a town and entered Datong County. Looking for Fuzhi county belongs to Datong Road.

Wuchu county was abandoned in the Ming Dynasty, so it was treated in Baideng village, 25 Li south of Yanggao County.

In the 26th year of Hongwu in Ming Dynasty (1393), Yang Hewei was set up as the commander of Shanxi provincial capital.

Xuande first year (1426) moved gaoshanwei to Tongzhi, belonging to Datong Prefecture. In 1547, Datong East Road was set up.

In the early Qing Dynasty, Yanghe Wei was changed into Yanggao Wei, belonging to Datong Prefecture.

Shunzhi six years (1649) Datong government to rule (eight years to return the old rule).

Yongzheng three years (1725) changed to Yanggao County, Datong Prefecture.

During the Anti Japanese War, the Anti Japanese democratic government of Yanggao County was established in the southern mountainous area of Yanggao County, belonging to the Shanxi Chahar Hebei border region.

Yanggao County was liberated in 1948.

In January 1949, it was returned to Yanbei special office of Chahar province.

In October 1952, he returned to the Jin Dynasty and still belonged to Yanbei.

In July 1993, the prefecture and city merged, Yanbei merged into Datong City, and Yanggao became a county of Datong City.

In 2000, in accordance with the spirit of the State Council, the township was withdrawn and merged with the township. Yanggao County set up 7 towns and 6 townships.

In 2001, Chengguan town and sunrenbao Township merged to set up Longquan town; luowenzao town and taipingbao Township merged to set up luowenzao town; wangguantun town and zhujiayaotou Township merged to set up wangguantun town; Dabaideng town and Pansi Township merged to set up Dabaideng town; Gucheng town and xiashenyu Township merged to set up Gucheng town; shizitun Township and Houying Township merged to set up shizitun township; xiashenjing Township and zhangguantun Township merged to set up shizitun township Xiashenjing township was established.

In January 2018, majiazao township was under the jurisdiction of Tianzhen county.

administrative division

As of February 2018, Yanggao County has jurisdiction over 7 towns and 5 townships, including Longquan Town, wangguantun Town, DaBaiDeng Town, luowenzao Town, Gucheng Town, dongxiaocun Town, Youzai Town, Changcheng Town, beixutun Town, xiashenjing Town, shizitun town and Aoshi Town, with a total of 256 administrative villages. The total area is 1678 square meters.

geographical environment

Location context

Yanggao County is located in the northeast of Shanxi Province, at the junction of Shanxi, Hebei and Inner Mongolia. It is located between 113 ° 28 ′ 36 ″ - 114 ° 6 ′ 15 ″ E and 39 ° 49 ′ 50 ″ - 40 ° 31 ′ 10 ″ n. The county seat is about 5 kilometers below the foot of Yunmen mountain. It is 52 km from Meihai Datong in the west, 412 km from Datong to the provincial capital, 317 km from Zhangjiakou to Beijing in the East, close to the middle section of Beijing Baotou railway, and 517 km from Erlian in the north of Jining. It borders Tianzhen county and Yangyuan County in Hebei Province in the East, Hunyuan county and Guangling County in the south, Xinrong District and Yunzhou District in Datong City in the west, and Fengzhen county and Xinghe County in Inner Mongolia in the north.

geological structure

Yanshanian movement formed the uplift of Liuleng mountain, Yunmen mountain and Cailiang mountain in the territory. After Himalayan movement, the mountains rose obviously and formed a steep mountain. In front of the mountain, there were large faults produced by the uplift, with clear fault triangle. At this time, the mountain is the vast "Datong Lake.". Due to the inherited activity of Yanshan movement, the whole crust rose, the closed mountain pass split from the fault, and the lake water retreated, forming the Cenozoic faulted basin of Sangganhe large anticline in Shanxi platform anticline, with the main composition line of NE-SW. The central part of the North became an inland lake subsidence basin under the Yanshanian movement, and the Yunmen piedmont fault was clearly visible. The margin of the basin is a vast alluvial fan, reflecting the characteristics of the boundary between the ascending and descending areas. About the late Middle Ages, under the action of the Yanshan movement, the whole Shanxi arch rose, making the old fault move again. In addition, a series of normal faults were induced at the crankshaft of the arch, which made the Rift Valley underground pressure. The blocks between them were compressed and relatively uplifted, becoming round hills, that is, today's hills. In the south, under the action of strong pressure, magma gushed out from the fault fissures and became a volcanic remnant mound. In the Mesozoic Jurassic, the Yunmen piedmont fault and the cailiangshan fault in the northwest pressed each other, causing the mountains covered with virgin forests to sink, then the flood overflowed and gradually became inland lake deposits. The basin in today's Changcheng and rural areas is produced here, which is the same as that in the west of Datong Basin and the coal sea. Therefore, there are 2-3 minable coal seams under the strata, mainly composed of black carbonaceous shale with a thin layer of black limestone. Due to the ascending and descending movements of the ascending and descending plates of the NE and NW faults, the basement is uneven and the thickness of the loose sediments varies. Yunmen mountain, Cailiang mountain and Liuleng mountain have a large rise range, and the relative subsidence of the basin is relatively large, forming a deep fault in front of the mountain, with an elevation difference of 1560m.

The main strata in Yanggao County are: Sanggan group, which is mainly distributed in Yunmen mountain, Cailiang mountain, Heilongdong mountain and central hilly area, and Liuling mountain area is also exposed; Great Wall System (generally known as Sinian System), which is distributed in southern Liuling mountain, central Gedun mountain and yujiayao area, is also exposed; Cambrian system, which is distributed in Liuling mountain area and yujiayao area in central hilly area; Ordovician system, which is mainly distributed In the Liuling mountain area, the Jurassic system is distributed in the northwest of China, and the tertiary system is composed of the middle and upper series. Miocene series are exposed in the gullies of the central hills. Pliocene is widely distributed in the central hilly area.

landforms

Yanggao County is a W-shaped folded terrain. The undulating complex landform can be divided into three units: denudation structure, erosion structure and accumulation structure. There are mountains, hills, plains, basins, valleys and other landforms. Traditionally, it can be roughly divided into three types: mountains, rivers and hills.

According to the number of agricultural division, Yanggao County has a total area of 1704.6 square kilometers (256000 mu), including 539.8 square kilometers (81000 mu) in mountainous area (earth rock mountainous area + bianshanyukou), accounting for 31.7%; 622.6 square kilometers (93000 mu) in Sichuan area (Pingchuan + Beach), accounting for 36.5%; and 542.2 square kilometers (81000 mu) in hilly area, accounting for 31.8%. It is close to three parts of the world.

Yunmen mountain is a middle mountain area of denuded fault block metamorphic rocks, covering an area of 31.6 square kilometers. The main peak is at the back of beibailiugou mountain in luowenzao Town, with an altitude of 2118 meters. It is named because of the high mountain and the frequent floating clouds.

Cailiangshan is a middle mountain area of denuded fault block metamorphic rock bedrock, belonging to Yinshan vein, with an area of 149.1 square kilometers. The area is about 10 Li to the west of the county, bounded by kaishankou of Yunmen mountain in the north, Jule of Datong County in the south, and cut off by Yuhe River in the West. The main peak is 2144.6 meters above sea level, southwest of zhuanyingou, which is the watershed with Datong City.

LIULENGSHAN is a denuded fault block mountain area. The planation surface of Beitai period is preserved on the top of the mountain, and the valley between the mountains is more than that of Tangxian period. It covers an area of 60.5 square kilometers, east-west direction. It seems that there are six straight mountain ridges, which are very spectacular. The main peak of huangyangjian, 2420.5 meters above sea level, belongs to Hengshan mountain system and is the highest peak of Beiyue. The north part of Fenshui mountain is the Yanggao boundary. The vegetation on the back slope is good. There are many birch trees. Once there were beasts and snakes. There are iron ore, marble and limestone buried on the mountain. There are more than ten small mountain villas in the valley, such as Huangtupo and wangguanzhang.

Bianshanyukou district includes three bianshanyukou districts, South, North and West, covering an area of 298 square kilometers, accounting for 17.5% of the total area of Yanggao County. Shanyukou in the North covers an area of 130.6 square kilometers; shanyukou in the West covers an area of 90.2 square kilometers; shanyukou in the South covers an area of 71.5 square kilometers. The hilly area is 542.2 square kilometers, nearly one third of Yanggao County. The landform is very typical, gullies develop rapidly, and most of them form "V" shaped valleys. There are many Valley in valley phenomena, which are fragmented. The altitude is between 1100-1400m, and the relative height difference is not big. There are two land types in qiunan and Qiubei, and the watershed is denuded low mountain area. The area of qiunan is 243.5 square kilometers, the area of Qiubei is 298.7 square kilometers, and the eroded low mountain area of Fengren mountain is the watershed of qiunan and Qiubei.

Heilongdong mountain is located in the north of minniangcheng village, with an altitude of 1335.6 meters, which is the highest; Daquan mountain and Fenghuang mountain, with an altitude of 1266 meters, extend to the north in the middle of the hill. Pingchuan District includes the South and the north, covering an area of 238 square kilometers, accounting for 14% of the total area of Yanggao County. Including: beipingchuan, also known as Yanggao basin. With an area of 55.9 square kilometers and an altitude of 1050-1100 meters, Nanchuan Valley is a grain producing area with good water and fertilizer conditions, and it is a part of Datong Basin. It is the lowest altitude in Yanggao County, between 850 and 920 meters

Chinese PinYin : Shan Xi Sheng Da Tong Shi Yang Gao Xian