Dadukou District, Chongqing Municipality

Dadukou District Dadukou District, located in the southwest of Chongqing, is the main urban area and metropolitan area of Chongqing. It is an important part of Chongqing metropolitan area and one of the 12 groups in the downtown area of Chongqing. It was established in 1965.

Dadukou District is adjacent to Banan District in the East, Jiangjin District in the South and Jiulongpo District in the West and North. By the end of 2017, Dadukou District had jurisdiction over 5 streets and 3 towns, with an area of 102.83 square kilometers and a permanent resident population of 340000.

The tourism resources of Dadukou District are mainly natural landscape and human resources, including Jinao mountain, Jianshi mountain, Dadukou Forest Park, Dadukou Yidu Park, Masangxi ancient town, Yanxing paper-cut, etc.

Dadukou District has won the honorary titles of national greening model city, municipal civilized city, municipal sanitary city, municipal environmental protection model district, municipal landscape garden city, and national sanitary city (District).

Historical evolution

In the pre Qin period, Dadukou belonged to Jiangzhou, the state of Bazi.

During the Qin and Han Dynasties, the area belonged to Jiangzhou County, Bajun county.

During the northern and Southern Dynasties, in 487, Jiangzhou county was changed to Dianjiang County, and the territory belonged to Dianjiang County; in 561, Dianjiang County and Zhixian county were replaced by Baxian County, and the territory belonged to Baxian county.

From Sui, Tang to the end of the Northern Song Dynasty, it was Baxian County of Yuzhou. From the end of the Northern Song Dynasty to the beginning of the Southern Song Dynasty, it was Baxian County of Gongzhou. In the 16th year of Chunxi in the Southern Song Dynasty (1189), it was Baxian County of Chongqing Prefecture.

In Yuan Dynasty and Ming Dynasty, Baxian county was still under the jurisdiction of the district.

Dadukou was originally named beidukou. In 1899, Yidu was set up at masang River on the North Bank of the Yangtze River in Baxian county. The river is wide and the water is slow. There are many people crossing the river. The scale of the ferry is the first along the river for tens of miles. It is called "Dadukou".

After the founding of the people's Republic of China, in 1965, Chongqing Municipal People's government established Dadukou District, covering an area of 7.46 square kilometers, in order to serve Chongqing Iron and Steel Co., Ltd.; after the zoning adjustment in 1995, the area under its jurisdiction was expanded to 103 square kilometers.

administrative division

By the end of 2017, Dadukou District has jurisdiction over five streets and three towns: Xinshan village street, Yuejin Village street, jiugongmiao street, qiezixi street, Chunhui road street, Baqiao Town, Jiansheng town and Tiaodeng town.

geographical environment

Location context

Dadukou District is located in the south of Chongqing City, between 106 ° 23 '- 106 ° 31' e and 29 ° 20 '- 29 ° 30' n. In the southeast, it faces Huaxi town and Yudong street in Banan District and Luohuang town in Jiangjin district across the river. In the northeast and southwest, it is adjacent to Jiulong Town, Zhongliangshan Town, Tongguanyi Town, taojia Town, Shiban town and Huayan Town in Jiulongpo District. It is 17.25 kilometers long from north to South and 13.75 kilometers wide from east to west, covering an area of 102.83 square kilometers.

Geology and geomorphology

Dadukou area is located in the arc-shaped structural belt of Southeast Sichuan, Southeast of Huayingshan broom shaped fold cluster and East Wing of guanyinxia anticline. Its structural framework was formed in the late Yanshanian fold movement. The structural features from west to East are Zhongliangshan fault zone, jinaosi (Hualongqiao) syncline, longwangdong anticline, Shapingba to Chongqing Jiefangbei syncline. The folds in the area are gentle and open with gentle dip. The axis and wing are composed of sandstone and mudstone of shangshaximiao formation. The fold dip angle is 2-8 ° and the rock occurrence is gentle with dip angle of 3-15 °. Zhongliangshan fault zone passes through the area from the southwest of Dadukou District, which is a compression torsion thrust fault.

Scenery of Dadukou District

Dadukou area belongs to the parallel range valley area in East Sichuan. The geomorphic type is affected by the lithology and geological structure of the stratum. The anticline generally uplifts into mountains, and the syncline erodes for a long time to form hills. The whole area changes from northwest to Southeast in a ladder shape, gradually from high to low. In the west, it belongs to Zhongliang mountains, mainly low mountains, with the highest elevation of 650 meters. In the middle and Southeast, it is mainly medium hills, shallow hills, flat dams and terraces along the river. The lowest point is located at the exit of the Yangtze River, with an elevation of 150 meters and a relative elevation difference of 500 meters.

Climatic characteristics

Dadukou District has a subtropical monsoon humid climate. The annual average temperature is 18.7 ℃, the minimum temperature in winter is 6-8 ℃, the average temperature in summer is 27-29 ℃, the total sunshine hours are 1000-1200 hours, the winter is warm and the summer is hot, the frost free period is long, the rainfall is abundant, and the annual rainfall is 1000-1400 millimeters.

River system

All rivers in Dadukou District belong to the Yangtze River system, with a drainage area of more than 10 km (except the Yangtze River), including Tiaodeng River, Taohua River and Funiu river. The main stream of the Yangtze River flows around the District, with a flow of 32 km; Tiaodeng river originates from Huayan Town, Jiulongpo District, and flows into the Yangtze River from Xiaonanhai town through Tiaodeng Town, with a flow of 25.8 km; Funiu river originates from citizen village, Baqiao Town, and flows into the Yangtze River, with a length of 6.2 km; Taohua river originates from Shiqiao Town, and directly flows into the Yangtze River through the urban area, with a length of 32.0 km.

natural resources

land resource

Dadukou District has a variety of soil types, including paddy soil, fluvo aquic soil, purple soil, yellow soil, limestone soil, etc. Purple soil accounted for 51% of the total area, and paddy soil accounted for 32%.

mineral resources

The mineral resources of Dadukou District are mainly non-metallic minerals, including limestone, dolomite, mudstone, sandstone, river sand, etc. Limestone is mainly distributed in the low mountain area of Zhongliangshan anticline, and dolomite is mainly produced in Leikoupo Formation.

Hydropower resources

The main water resources in Dadukou District are surface runoff and transit water resources. The annual average surface water resources are 43.9 million cubic meters, and the transit water resources are 280.5 billion cubic meters.

Geothermal resources

The karst troughs formed by the lower Triassic carbonate rocks in the axial or near axial part of the Guanyinyan anticline in Dadukou District gather atmospheric precipitation to the depth of the strata, and the groundwater temperature increases with the increase of geothermal temperature and chemical heat. The geothermal reserves consist of three parts: the first is the thermal reserves horizon, which is composed of carbonate strata of Jialingjiang formation of Lower Triassic and Leikoupo Formation of Middle Triassic, with a thickness of 500m. The second is thermal reservoir cap rock, which is composed of clastic rock layer of Xujiahe formation of Upper Triassic and red rock mudstone sandstone layer of Jurassic, with a thickness of more than 1000m. The third is the water resisting stratum in the lower part of the thermal reservoir, which is mainly composed of clastic rocks intercalated with carbonate rocks of Feixianguan Formation of Triassic, with a thickness of more than 500 meters.

Population nationality

population

In late 2017, the registered residence population in Dadukou District was 264 thousand, an increase of 2609 persons compared to 2016, including 130 thousand males and 134 thousand females. In the whole year, 3166 people were born, with a birth rate of 12.0 ‰; 4925 people died, with a mortality rate of 18.7 ‰; and the natural growth rate of population was negative 6.7 ‰. There are 355000 permanent residents, including 345800 urban residents, with an urbanization rate of 97.41%, 0.09 percentage point higher than that in 2016.

nation

By the end of 2012, there were about 3000 ethnic minorities in Dadukou District, accounting for 0.1% of the total population, mainly including 28 ethnic minorities such as Tu, Hui, Miao and Manchu.

Economics

overview

In 2017, Dadukou District achieved a GDP of 19.65 billion yuan, an increase of 7.4% over 2016, of which the added value of the primary industry was 150 million yuan, a decrease of 12.5%; the added value of the secondary industry was 7.65 billion yuan, an increase of 9.0%; the added value of the tertiary industry was 11.85 billion yuan, an increase of 6.6%. The added value of the primary industry accounted for 0.8% of the region's GDP, down 0.1 percentage point; the added value of the secondary industry accounted for 38.9%, up 0.6 percentage point; the added value of the tertiary industry accounted for 60.3%, down 0.5 percentage point. According to the annual average resident population, the per capita GDP of the whole region is 56547 yuan.

primary industry

In 2017, Dadukou District achieved a total agricultural output value of 231.79 million yuan, down 9.5% from 2016, including: agricultural output value of 17.03 million yuan, down 9.5%; forestry output value of 25.12 million yuan, up 7.8%; animal husbandry output value of 13.34 million yuan, down 41.7%; fishery output value of 5.07 million yuan, up 15.3%; agriculture, forestry, animal husbandry and fishery service industry output value of 18.23 million yuan, up 2.2%. In 2017, the sown area of vegetables in the region was 23600 mu, and the total yield of vegetables was 41000 tons; 895 pigs, 337 goats and 72000 poultry were sold.

the secondary industry

In 2017, Dadukou District achieved an industrial added value of 5.25 billion yuan, an increase of 10.6% over 2016, of which the added value of industries above designated size increased by 10.9% and that of strategic emerging industries increased by 14.8%. 84 Industrial Enterprises above Designated Size achieved an increase of 17.4%; the value of export delivery reached 1.51 billion yuan, an increase of 14.8%. In 2017, the operating revenue of the above designated industries in the region was 20.61 billion yuan, up 18.7% year on year, and the operating cost was 16.71 billion yuan, up 19.3%.

In 2017, the added value of construction industry in Dadukou District was 2.4 billion yuan, an increase of 5.5% over 2016; the total output value of construction enterprises in the whole year was 19.03 billion yuan, an increase of 14.6%; the contract value signed by construction enterprises was 55.97 billion yuan, an increase of 25.7% over 2016.

the service sector; the tertiary industry

In 2017, the total retail sales of social consumer goods in Dadukou District reached 4.91 billion yuan, an increase of 9.1%. From the perspective of commodity sales, the total sales of wholesale and retail industry in the region reached 23.31 billion yuan, an increase of 14.0%, and the operating revenue of accommodation and catering industry reached 1.29 billion yuan, an increase of 8.2%.

In 2017, the total import and export volume of the region reached 277.31 million US dollars, an increase of 27

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