Xuanzhou District, Xuancheng City, Anhui Province

Xuanzhou District, Xuanzhou District, belongs to Xuancheng City, Anhui Province. It is located at the junction of Anhui Province and Jiangsu Province, between 118 ° 28 '- 119 ° 04' e and 30 ° 34 '- 31 ° 19' n, with a total area of 2585 square kilometers. Xuanzhou District has a subtropical humid monsoon climate with obvious monsoon climate. As of November 2019, Xuanzhou District has 17 townships and 9 streets. Xuanzhou District People's Government in Jichuan street. By the end of 2018, 864 thousand people registered residence in Xuanzhou.

Xuanzhou District was officially established as a county in the early Qin Dynasty, and was named "Yuanling". In 2000, it was renamed Xuanzhou District. Anhui Jiangxi and commercial Hefei Hangzhou Railway meet here, and Shanghai Chongqing Expressway, Xuannan copper, Nanjing Xuanhang and Li Guang Expressway pass through the territory. Xuanzhou District was selected as one of the "top 100 areas of national investment potential" for four consecutive years from 2016 to 2019, and was selected as one of the "top 100 areas of national comprehensive strength" for three consecutive years in 2017, 2018 and 2019. Xuanzhou District was ranked as one of the "top 100 areas of national green development" in 2018 and 2019, and was rated as the advanced county of provincial private economy development.

In 2019, the GDP of Xuanzhou District is 42.6 billion yuan, an increase of 7.5% over 2018, of which the GDP of Xuanzhou District is 34.36 billion yuan, an increase of 7.9% over 2018. By industry, the added value of the primary industry was 4.42 billion yuan, an increase of 3.5%; the added value of the secondary industry was 16.49 billion yuan, an increase of 9.5%; the added value of the tertiary industry was 21.69 billion yuan, an increase of 6.8%.

Historical evolution

Xuanzhou District, named Yuanling in the spring and Autumn period, is the gathering place of the ancient Yue people.

In the early Qin Dynasty, the county was officially established.

In the Western Han Dynasty, Wanling was renamed as Danyang county and Xuancheng County in the West.

The Western Jin Dynasty belongs to Xuancheng county.

In the early Sui Dynasty, Wanling was abandoned as Xuancheng county and Xuanzhou was established.

Xuanzhou was established in the early Tang Dynasty. In the middle of the Tang Dynasty, it was renamed Xuancheng County, and later it was renamed Xuanzhou.

In the Southern Song Dynasty, it was ruled by Ningguo government.

Yuan Dynasty, for Ningguo road rule.

Ming and Qing Dynasties, for Ningguo government.

From the third year of the Republic of China (1914) to the 17th year of the Republic of China (1928), it belonged to Wuhu Road; from the 21st year of the Republic of China (1932) to the 29th year of the Republic of China (1940), it belonged to the ninth and sixth administrative supervision district respectively.

After the founding of the people's Republic of China, Xuanzhou City was set up in the urban area as the residence of Xuancheng special office and Xuancheng county government; in 1950, Xuancheng City was withdrawn and incorporated into the county; in 1952, it belonged to Wuhu special district; in 1980, it was the residence of Xuancheng District; in August 1987, Xuancheng county was abolished and Xuanzhou City at the county level was established; in June 2000, Xuancheng district and Xuanzhou City at the county level were withdrawn and Xuancheng City at the prefecture level was established; Xuancheng City was established Xuanzhou District was established, with the former administrative region of Xuanzhou City at the county level as the administrative region of Xuanzhou District; in December 2000, the city was officially divided into districts.

administrative division

As of November 2019, Xuanzhou District has 17 townships and 9 streets (among them, Feicai street and Jinba Street are entrusted to Xuancheng Economic Development Zone). The government is stationed in Jichuan street.

geographical environment

Location context

Xuanzhou District is located at the junction of Anhui and Jiangsu provinces, between 118 ° 28 '- 119 ° 04' e and 30 ° 34 '- 31 ° 19' n. It is adjacent to Guangde County and Yingxi County in the East, Ningguo City and Jing County in the South and southwest, Nanling County, Wuhu County and Dangtu County in the West and northwest, and Gaochun District in Jiangsu Province in the north. The total area is 2585 square kilometers.

details

geology

Xuanzhou District is a transitional area between Jiangnan ancient land and Nanjing sag, belonging to Jiangning Wuhu stratigraphic District of lower Yangtze division. The regional geological structure is complex, from Cambrian to Middle Triassic is the period of descending sedimentation, to Indosinian movement began to fold and uplift; the late Yanshanian movement (Late Cretaceous) continued to uplift, but most of the area occurred faults, formed depressions, accompanied by magmatic movement; the Himalayan movement inherited the differential rise and fall of Yanshanian movement in the tertiary, continued to uplift in the East, tilted in the south, and uplifted in the West In the Holocene, except for the northern plain area which continued to decline, other areas rose slowly with high erosion and low accumulation.

There is a large fault Zhouwang deep fault in Xuanzhou area. The fault and its secondary faults control the structural pattern and stratigraphic distribution of the area, and fault breccia is widely formed near the East-West Zhouwang fault. The red sandstone and limestone of Xuannan formation are widely distributed in the southeast and southwest of the area, which are generally covered by eluvium and diluvium with a thickness of 3-5M. The alluvial layer at the bottom of the valley is cultivated farmland; the surface layer of the alluvial plain in the middle and north is sandy loam, silty loam and silt with a thickness of 2-6m; the lower layer is generally sand layer and sand gravel layer.

topographic features

Xuanzhou District is located at the junction of the hilly land in southern Anhui Province and the alluvial plain in the middle and lower reaches of the Yangtze River. There are various types of landforms in Xuanzhou District, including low mountains, hills, plains, polder areas, lakes and rivers, accounting for 9.91%, 58.19%, 11.74%, 13.37%, 5.19% and 1.60% of the total land area, respectively. The terrain features are high in the South and low in the north. The southern part is located at the edge of the hilly land in southern Anhui Province Continuous; the middle part of the terrain has obvious transition, mainly hills and hills; the north part of the plain along the river, flat terrain, the vast majority of inland river polders.

Taking Shuiyangjiang River as the boundary, the east side belongs to Tianmu Mountain, and the main branches are Shuangfeng, Magu, etc.; the west side belongs to Huangshan Mountain, and the main branches are Baijian, Gaofeng, Jingting, Jiulianshan, etc. The highest peak is in Xikou town in the South with a ground elevation of 1097.3 meters, and the lowest point is in jinbaowei in the north with a ground elevation of 6.8 meters.

climate

Xuanzhou District is located in a mild and humid subtropical monsoon climate. The annual average temperature is 15.9 ℃, the maximum temperature is 40.5 ℃, and the minimum temperature is - 15 ℃; with the difference of terrain, the temperature decreases from north to south, and the difference is about 0.5 ℃. The frost free period is 235 days, the annual average snow cover days is 5.5 days, the relative humidity is 70-90%, the light is sufficient, and the annual average sunshine hours is 2074 hours; the wind direction has obvious seasonal changes, and the wind direction is stable The frequency of nne-e is the highest, reaching 44%. The annual average wind speed is about 2.9 M / s. Typhoons often occur in the region, with the maximum instantaneous wind speed of 26 M / s.

Due to the monthly variation of solar radiation and the influence of monsoon circulation, the evaporation in Xuanzhou has obvious seasonal characteristics. Taking Xuancheng station as an example, the annual average evaporation is 788.9 mm, the maximum annual value is 1112.7 mm (1995), the minimum annual value is 664.6 mm (1980), and the maximum daily value is 13.0 mm (July 22, 1990). The annual distribution of evaporation is uneven, generally concentrated in May to August, accounting for 53.8% of the annual evaporation.

Xuanzhou District has abundant rainfall, the average annual rainfall is 1356 mm, and the interannual variation of rainfall is large. Taking Xuancheng station as an example, the maximum annual rainfall is 2105.4 mm (1954), the minimum annual rainfall is 760.8 mm (1978), the extreme value difference is 1344.6 mm, and the extreme value ratio is 2.8. The annual distribution of rainfall is very uneven, generally concentrated in May to August, accounting for about 50.6% of the annual rainfall. The rainfall in the region is affected by the topography, and the difference between the north and the south is large. Compared with Xikou rainfall station and xinhezhuang rainfall station, the average rainfall in the south is 1.34 times of that in the north.

The causes of Rainstorm in Xuanzhou area include trough, Jianghuai shear line, vortex and typhoon (or tropical storm), and most of them occur in summer and autumn. Generally, the trough rainstorm is the most frequent from March to may, the shear line rainstorm is frequent from June to July, the vortex is often accompanied by the shear line at the same time from March to July, the typhoon rainstorm is often affected from August to October, the number of rainstorm days is generally 3 to 4 days, and the rainstorm occurs from February to November, with June to August being the most, accounting for more than half of the annual rainstorm times. In addition, the rainstorm is characterized by high intensity, and a large amount of rainfall often occurs in a short period of time. For example, the rainfall of Xuancheng station was 412.4 meters in three days from June 12 to 14, 1984, and the maximum daily rainfall was 291.2 meters.

soil

There are 9 soil types, 16 soil subclasses, 40 soil genera and 73 soil species in Xuanzhou District. Paddy soil, red soil, yellow cinnamon soil, fluvo aquic soil and purple soil accounted for 93.3% of the total soil area, of which paddy soil accounted for 45.54% and red soil 37.69%. The soil was seriously short of phosphorus and potassium, and the content of organic matter was low, which seriously hindered the increase of yield per unit area.

natural disaster

The main natural disasters in Xuanzhou District are drought, waterlogging, low temperature, rainstorm and hail.

natural resources

water resource

Xuanzhou District is rich in water resources. The main water systems are Shuiyangjiang river system and Qingyijiang River system. Shuiyangjiang River and Qingyijiang River are the first class tributaries of the Yangtze River. Among them, Shuiyangjiang river is the largest river in the region, passing through the territory from south to north, with a total length of 91.7 kilometers and a drainage area of 2035 square kilometers. Qingyijiang River flows through Wenchang town in the west of the region, with a length of 18.5 kilometers and a drainage area of 498 square kilometers There are some water surfaces of Nanyi Lake and Gucheng Lake in the north and northeast of the territory, with a total area of 201 square kilometers in the 12 meter water level time zone of Nanyi Lake in the northeast and 30.4 square kilometers in the 12 meter water level time zone of Gucheng Lake in the north.

The main tributaries of Shuiyang River and Qingyi River are Shuangqiao River, Huayang River, Wanxi River and Zhouhan river. The total catchment area is 3485 square kilometers, and the total length of the river is 195.3 kilometers. In addition, there are 33 small and medium-sized reservoirs with a total capacity of 50.662 million cubic meters, and 17300 ponds with a total capacity of 78.12 million cubic meters

Chinese PinYin : An Hui Sheng Xuan Cheng Shi Xuan Zhou Qu