Yan 'an City is located in the hilly and gully region of the Loess Plateau in northern Shaanxi, with the latitude of 35 21'~ 37 31'and the longitude of107 41'~10 3/kloc-. Yulin City in the north, Xianyang, Tongchuan and Weinan in the south, Linfen and Lvliang in Shanxi across the Yellow River in the east and Qingyang in Gansu in the west, with a maximum horizontal distance of 257.85km from east to west and a maximum vertical distance of 239.12km from north to south, with a total area of 37,000km2. The terrain is high in the northwest and low in the southeast, with hilly and gully landforms on the Loess Plateau, and the terrain is mainly plateaus and ridges. Average elevation 1000 m. All rivers in the territory belong to the Yellow River system. To the east of Laoshan-Huanglong Mountains, Yanhe River and other rivers directly flow into the Yellow River; To the west, the Luohe River system flows southward into the Weihe River. It is an inland arid and semi-arid area with four distinct seasons, abundant sunshine and large temperature difference between day and night. The average frost-free period is 170 days, the annual average temperature is 7.7℃- 10.6℃, the annual average sunshine hours are 2300-2700 hours, and the annual average precipitation is about 500mm.
At the end of 2006, the total population of the city was 2150,800, a net increase of 43,800 or 2.08% over the end of last year. There were 20,499 births and 5,970 deaths. The birth rate is 9.59‰, the death rate is 4.43‰, and the natural population growth rate is 5. 16‰.
In 2009, the total population of the city was 215180,000 (permanent population), with an increase of 0.46%, a self-increasing rate of 4.64‰, a birth rate of 10.44‰ and a mortality rate of 5.8‰.
According to historical records, Yan 'an was in the summer and now in Yongzhou. Business is a ghost. The Western Zhou Dynasty was the territory of dogs and dragons.
During the Spring and Autumn Period, Baizhai tribe lived in the territory. In the early Warring States period, the northern part of China was subordinate to Wei, and the southern part belonged to Qin, all of which belonged to Qin.
After Qin unified the six countries (former 22 1), this territory belonged to.
Han is still an upper county.
During the Northern Wei Dynasty, there were four counties in the southern part of this area, namely, North China Prefecture and Central, Fucheng, Yizhou and Lezhou. In the north, there are Quancheng, Ding Yang, Shang Jun and Shuofang counties in the east of Xiazhou and Jin Ming county in Zhou Xia. Yanzhou, Fuzhou and Danzhou were established in the Western Wei Dynasty.
In the third year of Emperor Kai of Sui Dynasty (583), seven counties including Cheng, Wen 'an, Zhong, Fucheng, Danyang, Lezhou and so on were withdrawn, and Yanzhou, Fuzhou and Danzhou were still established. In the third year of Great Cause (607), the state system was abolished and two counties, Shang Jun and Yan 'an, were established. In the first year of Sui Yining (6 17), Danyang County was added.
Both Tang and this area belong to Guannei Road. In the first year of Wude (6 18), Shang Jun, Yan 'an and Danyang were evacuated and as _ Zhou, Yanzhou and Danzhou were established. Wude two years (6 19), plus weekly release. In the first year of Tianbao (742), the state system was abolished and four counties were established: Yan 'an, Luojiao, Central and Xianning. In the first year of Gan Yuan (758), the county system was abolished and Yanzhou, Danzhou and Zhangzhou were rebuilt.
In Song Dynasty, this area belonged to Yongxing Army Road, and there are still Yanzhou, Zhangzhou, Zhoufang and Danzhou. In the early Song Dynasty, the northwest was occupied by Xixia. After the recovery, two armies of security and border defense were established. In the first year of Li Qing (104 1), the road was expanded. In the fourth year of Yuan You (1089), Yanzhou was promoted to Yanan prefecture.
Jin still set up _ Yan Road, which initially governed Yan 'an Prefecture, _ Prefecture, Danzhou Prefecture, Suide Prefecture (located in today's Yulin area), as well as the security and Dingbian armies. In the sixth year of Emperor Tong (1 146), he withdrew the border guards. In the 11th year of Dading (1 17 1), the security forces were reduced to security counties. In the 22nd year of Dading (1 182), Baoan county was promoted to Baoan state.
Yuan Jia Yan 'an Road, Lingzhou, Jiazhou and Suide (the last two states are in Yulin City).
In the second year of Hongwu in Ming Dynasty (1369), Yan 'an Road was changed to Yan 'an House.
In the third year of Yongzheng in Qing Dynasty (1725), _ Zhou was promoted to the governor of Zhili. There are two provincial administrative agencies in this area, namely, Yan 'an area and _ state.
In the second year of the Republic of China (19 13), the state was withdrawn and the county was transferred to Yulin Road. In 9 years (1920), Daozhi moved to the city. 17 years (1928), roads were abandoned, and counties were directly under the jurisdiction of the province.
In the 23rd year of the Republic of China (1934), two Soviet areas along the Shaanxi-Gansu border and northern Shaanxi were established.
1935165438+10. In October, the two Soviet areas along the Shaanxi-Gansu border and northern Shaanxi were renamed as Shaanxi-Gansu province and northern Shaanxi province. 1936 merged into Shaanxi-Gansu-Ningxia province in May. After the Xi Incident broke out, it was renamed the Special Zone of the Republic of China. On September 6th, 1937 was renamed as the Shaanxi-Gansu-Ningxia Border Region, and on October 6th,110 was renamed as the Shaanxi-Gansu-Ningxia Special Zone. 1938 1 month, also known as the Shaanxi-Gansu-Ningxia border region.
After the Central Red Army's Long March arrived in northern Shaanxi, China Soviet * * * and China Northwest Temporary Central Office were established in June1935+065438+1October.
1937 1.00 the central government stationed in Yan' an, and on September 6, the Shaanxi-Gansu-Ningxia border region was established.
1In July, 942, the Shaanxi-Gansu-Ningxia Border Region decided to build Wuqi County, which belongs to a trilateral division. 1 1 month, set the extension branch.
1943 65438+ 10, Yan Shu District Administrative Supervision Department was established, which governs Yan 'an City and 9 counties of Yan 'an, Zichang, Yanchuan, Yanchang, Gu Lin, Ganquan, Fuxian, Zhidan and Ansai.
1In May, 945, the Shaanxi-Gansu-Ningxia Border Region was moved to Xi 'an, and in May, 1 1 year, it was changed to the northern Shaanxi administrative region.
1948 65438+ 10, the administrative supervision department of Huanglong District was established, which governs Luochuan, Huangling, Yijun, Yichuan, Huanglong, Chengcheng, Hancheng, Heyang, Baishui and Fuping 10 counties.
After the founding of People's Republic of China (PRC), in May 1950, Yan 'an District of Shaanxi Province was established, and the Administrative Inspector Office of Yan 'an District of Shaanxi Province was established. June 5438+10, called Yan 'an Special Zone, Shaanxi Provincial People's Government was established.
1955 changed its name to Yan' an Commissioner's Office of Shaanxi Province in May.
1August, 968, Yan 'an District Revolutionary Committee was established.
1September, 969, it was renamed Yan 'an Revolutionary Committee.
1June, 978, the Revolutionary Committee of Yan 'an District was abolished and the administrative office of Yan 'an District was established.
1996165438+1October 15 with the approval of the State Council, the Yan' an area was abolished and the prefecture-level Yan' an city was established (199765438+1October 8, Yan' an People's 0 was formally established). Cancel the county-level Yan' an city and set up the county-level pagoda area. 1996 governs 1 district, 12 county, 197 township and sub-district office, 34 16 villagers' committee, 162 residents' committee, 463354 households and16 households.
In April of 20021year, Yan' an ranked 72nd in the national ranking of urban communication heat (prefecture-level cities) in 20021year.
In April of 20021,Yan' an was selected as one of the top 100 cultural cities in China in 20021.
In March, 20021year, Yan' an ranked 196 in the comprehensive strength ranking list of China cities in 20021year.
202 1,1The ranking of influential cities for rural revitalization and communication in 2020 was released, and Yan 'an ranked ninth.
202 1, 1, the ranking of China urban science and technology innovation and development index was released in 2020, and Yan 'an ranked 185.
From June 5438 to February 2020, Yan 'an ranked 1 1 in the list of the most distinctive tourist cities in China in 2020.
From June 5438 to February 2020, the ranking list of China's business environment in 2020 was released, and Yan 'an ranked 153.
In June, 2020 165438+ 10, the Central Civilization Office announced the list of cities selected for the 6th National Civilized City, and Yan 'an was awarded the 6th National Civilized City.
June 5438 +20201October, Yan 'an won the title of National Model City (County) with Double Support in 2020.
In June 2020, "20 19 China's Best City for Studying Abroad" was released, and Yan 'an ranked 1 15 (representing universities: Yan 'an University).
In 2020, 20 19, the GDP ranking of cities in Shaanxi province was released, and Yan' an ranked sixth with 166389 billion yuan.
From July, 2065438 to July, 2009, the National Health and Wellness Commission and state administration of traditional chinese medicine identified Yan 'an as a pilot city for the construction of urban medical complex.
20 17 10, the Ministry of Housing and Urban-Rural Development named Yan 'an as 20 17 National Garden City.
On July 20 16, Yan' an was awarded the title of national model city (county) with double support.