Zigong City, Sichuan Province

Zigong Zigong, a prefecture level city in Sichuan Province, is located in the south of Sichuan Basin; it is adjacent to Longchang city and Luxian County in the East, Luzhou City and Yibin City in the south, Qianwei county and Jingyan County in the west, Renshou County, Weiyuan County and Neijiang City in the north; its geotectonic system is yangzihuai area, Sichuan taiao, central Sichuan Taigong and Zigong depression; it has subtropical humid monsoon climate; in 2017, the city covers an area of 4381 square kilometers It has jurisdiction over 4 districts and 2 counties, and 3 million 239 thousand and 400 registered residence population.

Zigong "set up a city because of salt", and the two words "Zi, Gong" come from the names of "Ziliujing" and "Gongjing". At the same time, Zigong is also an important dinosaur fossil producing area in China, known as the "hometown of dinosaurs". Zigong Dinosaur Museum, one of the three largest dinosaur museums in the world, is famous at home and abroad. Zigong salt is the ancestor of all kinds of flavors, rooted in Bashu culture and born in Sichuan cuisine series. With the prosperity and development of salt industry economy, Zigong Salt Gang cuisine has become the representative of "Xiaohe Gang" in southern Sichuan, which is different from "Shanghe Gang" and "Xiahe Gang" cuisine in Chengdu and Chongqing.

Zigong has two universities, Sichuan University of light chemical industry and Sichuan Vocational College of health and rehabilitation.

In January 2019, Zigong won the title of "hometown of Chinese Salt Gang cuisine".

In 2020, GDP will reach 145.844 billion yuan

Historical evolution

In the Qin Dynasty, Fushun and Rongxian belonged to Bajun and Shujun respectively.

In the Han Dynasty, Qianwei county was established. Fushun Prefecture belonged to Jiangyang County of Qianwei County, while Rong County belonged to Nan'an County of Qianwei county. During the reign of emperor Zhang of the Eastern Han Dynasty, well salt was produced in Zigong area. The famous salt wells include Fushi well and Dagong well.

During the reign of Emperor Wu of the Northern Zhou Dynasty, counties and towns were set up because of salt. Fushi county was established in the name of fushijing, and Gongjing town was established in the name of dagongjing.

In the Tang Dynasty, Fushi county was renamed Fuyi County, and shenggongjing town was Gongjing County, subordinate to Rongzhou.

Song Dynasty, abandoned Gongjing County into Rongde county

In Ming Dynasty, Fuyi county changed its name to Fushun County, and Rongzhou was reduced to county. During the Jiajing period of Ming Dynasty, Fushun salt production center moved westward and new wells such as Ziliu were opened.

During the Anti Japanese War, the coastal areas were occupied, and Sichuan salt helped Chu again. In order to meet the needs of economic development and wartime military supplies, food and support the Anti Japanese War, the national government decided to set up cities. In August 1939, with the approval of Sichuan provincial government, the salt producing areas of the Fifth District of Fushun County and the Second District of Rongxian county were designated, which were taken from Liujing and Gongjing. On September 1 of the same year, Zigong municipal government was established and subordinate to Sichuan provincial government.

On December 5, 1949, Zigong City was liberated and subordinate to the South Sichuan administrative office.

In 1952, the southern Sichuan administrative office was revoked and subordinate to the people's Government of Sichuan Province.

In April 1978, all of Rong County and six communes in Heshi District of Fushun County were under the jurisdiction of Zigong City.

On March 3, 1983, the State Council approved that Fushun County in the former Yibin area should be put under the jurisdiction of Zigong City.

administrative division

Zigong has 6 county-level administrative divisions (4 municipal districts, 2 counties) and 91 township level administrative divisions (26 streets, 63 towns, 2 townships). It covers an area of 4382 square kilometers and has a population of 3.29 million. Zigong Municipal People's government is located at 443 Dangui street, Ziliujing district.

Remarks: Zigong High tech Industrial Development Zone (managed by Dangui street, Xueyuan street, Gaofeng street, Hongqi Street and Bancang Street) is listed separately in the plan and enjoys the authority of social and economic affairs management in the managed area.

geographical environment

Location context

Zigong City is located in the south of Sichuan Basin, between 28 ° 55 ′ 37 ″ - 29 ° 38 ′ 25 ″ N and 104 ° 02 ′ 57 ″ - 105 ° 16 ′ 11 ″ E. It is adjacent to Longchang city and Luxian County in the East, Jiangyang District, Jiang'an County, Nanxi District, Cuiping District and Xuzhou District of Luzhou City in the south, Qianwei county and Jingyan County in the west, Renshou County, Weiyuan County, Shizhong District of Neijiang City and Dongxing District of Neijiang City in the north. It covers an area of 4381 square kilometers.

topographic features

The geotectonic system of Zigong City is yangzihuai area, Sichuan platform depression, central Sichuan platform arch and Zigong depression. It is adjacent to Weiyuan longnusi dome in the north, Chishui sag in the southeast, Luzhou uplift in the South and Liangshan fold fault zone in the southwest. The structure is simple and the occurrence of rock strata is gentle. In the southeast, the folds are tight and the structures are narrow and long, while in the northwest, the structures are relatively wide and gentle. The terrain is high in the northwest and low in the southeast. The northwest part of the city is the concentrated distribution area of low mountains, and the elevation of mountains is generally 500-800 meters. The highest point is the main peak of Dingjia mountain in Rong County, with an altitude of 901 meters. The southeast is generally about 300-400 meters above sea level, mostly 300 meters (± 50 meters). The lowest point is at the water surface of Tuojiang River, which is 241 meters above sea level. The maximum relative elevation difference is 661m, and the relative elevation difference of general terrain is less than 50m. The landform type is low mountain and hill, which is composed of low mountain landform, Hill landform, flat dam landform and valley landform. The low mountains are banded, distributed in the northwest and Southeast, with wide distribution area, crisscross valleys and interspersed in the hills. The terrain is mainly hilly, flat terrain is very narrow, scattered, generally for the terraces along the river, the flat between hills. The area of low mountains accounts for 7.1%, hills 83.7% and gentle hills and flat dams 9.2%. In addition, there are various types of gullies, including gullies, gullies, erosion gullies, karst trough valleys, basins and valleys. The density of all kinds of gullies is 2.85 km per square kilometer.

climate

Zigong has superior natural conditions and subtropical humid monsoon climate. The annual average temperature is 17.5-18.0 ℃. It is warm in winter, hot in summer, early in spring, short in autumn and abundant in rainfall. The annual average temperature of Zigong City is 18.8 ℃, 1.0 ℃ higher than that of the normal year, ranking the third highest in history; the annual average total precipitation of Zigong City is 780.7mm, 20% less than that of the normal year, ranking the fifth lowest in history. The temperature in winter and summer is abnormally high, the temperature in spring and autumn is normal and slightly high, the precipitation in winter and spring is less, and the precipitation in summer and autumn is less. During the year, the cold air activity was less and the intensity was weak; severe drought in winter, spring and summer occurred in the western region, and moderate drought occurred in some parts of the eastern region; there were six regional or local rainstorm weather processes in the flood season, including thunderstorm, gale and hail weather in some parts; the high temperature and hot time in midsummer was long; the rainy weather in autumn was obvious. The annual average precipitation of the whole city is 780.7mm, ranking the fifth lowest in history, 20% less than the normal. In 2017, the total sunshine hours in Rong County, urban area and Fushun County were 1391.9 hours, 1260.0 hours and 1197.8 hours respectively, 166.1 hours, 288.8 hours and 100.9 hours more than those in 2016.

natural resources

water resource

The rivers in Zigong belong to Minjiang River and Tuojiang River. Yuexi River and mangxi River in the West belong to the Minjiang River system, with a drainage area of 1207 square kilometers. The rest of the rivers belong to the Tuojiang River system. There are primary tributaries Fuxi River, secondary tributaries Xushui River, Weiyuan River, Changtan River, Zhenxi River, etc. There are 44 rivers with a drainage area of more than 50 square kilometers, most of which are feathery or dendritic in shape. Zigong is extremely short of water resources, with a total of 1.842 billion cubic meters of water resources, including 211 million cubic meters of groundwater resources, which is one of the 50 most serious water shortage cities in China. The water resources per capita and per mu are 576 cubic meters and 960 cubic meters respectively, accounting for 18.2% and 31.0% of the province's water resources per capita respectively. The water shortage problem is particularly prominent in the densely populated, factories and mines concentrated, and prosperous business and trade urban central areas. The water resources per capita is only 307 cubic meters, accounting for 9.7% of the province's water resources per capita.

land resource

The soil in Zigong City can be divided into 5 soil types, 9 sub types, 25 soil genera and 70 soil species under the comprehensive effects of specific climate, topography, parent material, biology and human activities. High yield soil accounted for 33.5%, middle yield soil 42.6%, low yield soil 23.9%, purple soil 50.1%, paddy soil 34.6%, new soil 0.9%, yellow soil 13.7%, Black Lime Soil 0.7%.

mineral resources

Zigong is an area with poor mineral resources. There are 16 kinds of mineral resources in the area, including coal mine, salt mine, limestone for cement, limestone for building stone, sandstone for cement proportioning, clay for brick and tile, sandstone for building, shale for brick and tile, kaolin, ceramic soil, bentonite, sandstone, mineral spring, limestone, quartzite, shale, etc. The main minerals are salt and coal. The theoretical reserves of shale gas resources are about 2.5 trillion cubic meters. The administrative area is basically covered by shale gas blocks, mainly involving Fushun Yongchuan, Weiyuan and Jingyan Qianwei blocks. Among them, Fushun Yongchuan block involves Fushun area, Weiyuan block involves most of Rongxian area, and Jingyan Qianwei block involves the border area of Rongxian and Leshan City. PetroChina block accounts for about 93%, Sinopec block accounts for about 4.5%, and blank block accounts for about 2.5%. Rock salt resources are concentrated in Changshan town in the west of Rong County, accounting for 1 / 3 of "Weixi rock salt body"; coal resources are concentrated in Rong County in the North West and Fushun County in the South East; limestone is mainly distributed in Rong County, Fushun County, Gongjing district and Da'an district; quartz sandstone is mainly distributed in Rong County, Fushun County, Yantan district and Ziliujing district; bentonite is mainly distributed in Shuangshi District of Rong County Kaolin is mainly distributed in Yujia Township, Shuanggu town and Tiechang town in the northwest of Rong County; common building materials mineral resources and brick shale are widely distributed in all districts and counties of the city. There are 7.93 billion tons of rock salt resources, 170 million tons of coal resources, 8.91 million tons of kaolin resources and 8.91 million tons of stone resources

Chinese PinYin : Si Chuan Sheng Zi Gong Shi