Gao'an, a county-level city under the jurisdiction of Jiangxi Province, is managed by Yichun city. It is located in the northwest of central Jiangxi Province and the west of Nanchang city. It belongs to the middle and lower reaches of the Yangtze River Plain, 42 kilometers away from Nanchang, covering an area of 2439.33 square kilometers. By the end of 2018, Gao'an city had 2 streets, 21 towns and 1 reclamation farm, with a population of 878300.
Gao'an county was built in the sixth year of emperor Gaozu of Han Dynasty (201 BC), named Jiancheng. In the fifth year of Wude of Tang Dynasty (622), in order to avoid the taboo of Prince Li Jiancheng, it was rebuilt into Gao'an. In 1993, Gao'an county was set up as a city. Gao'an is an advanced county of grain production in China, a big county of pig production in China, a pollution-free vegetable production base in China, a big city of automobile transportation in China, a building ceramic industry base in China, and a calligraphy industry base in China It's the home of the world. Gao'an city has Bafuluo ecological valley scenic spot, hualinzhai upstream Lake scenic spot, Yuan blue and white Museum, Jiajia ancient village and other scenic spots.
In 2020, Gao'an will achieve a GDP of 46844.8 million yuan and a total revenue of 5141.42 million yuan.
Evolution of organizational system
Gaoan county was built in the sixth year of emperor Gaozu of the Han Dynasty (201 BC). It was one of the 18 counties in Yuzhang county. The jurisdiction of the built county is equivalent to the whole territory of Gaoan, Shanggao, Yifeng, Wanzai and a part of Zhangshu City. In the fourth year of the first year of the Western Han Dynasty (184-1 BC), it was transformed into Duoju county. In the first year of Jianwu of the Eastern Han Dynasty (25 BC), the old name of the built county was restored In 1989, a part of Jiancheng county was set up as Shangcai County (now Shanggao county); in the reign of Wu Huangwu (222-228), another part of Jiancheng county and Shangcai County was set up as Yifeng county and YangLe county (now Wanzai county); in Jin and Southern Dynasties, Jiancheng county was still Yuzhang County.
In the ninth year of kaihuang (589), the Sui Dynasty unified the whole country, abolished Wangcai (Shangcai), merged Kangle (YangLe) and restored Yifeng. It was the right time to change Yuzhang County into Hongzhou, so it belonged to Hongzhou. In the early year of Daye (605), the county was abandoned and restored, and the county still belonged to Yuzhang county.
In the fifth year of Wude (622) of the Tang Dynasty, in order to avoid the name taboo of Prince Li Jiancheng, it was renamed Gao'an because of the terrain of "high in the north and low in the south, like high and safe". At the same time, Jingzhou was set up in Gao'an to restore Wangcai, Yifeng and YangLe counties, and Huayang county was added. Together with Gao'an, the five counties were unified in the prefecture. In the seventh year of Wude (624), it was renamed Mizhou first and then Junzhou. In the eighth year of Wude (625), Jingzhou was abolished, and Wangcai, Yifeng, YangLe and Huayang counties were merged into Gao'an county and subordinate to Hongzhou.
In the tenth year of Baoda in the Southern Tang Dynasty (952), Junzhou was restored and led by Gao'an, Shanggao, Wanzai and Qingjiang. Gao'an was the seat of Junzhou.
In 981, Xinchang County (now Yifeng county) was set up in Gaoan and Shanggao respectively; in 1143, Junzhou was renamed Gaoan County, and it was renamed Junzhou five years later. In the first year of Baoqing (1225), because the word "Yun" is homonymous with the name of Zhao Yun of emperor LiZong of Song Dynasty and coincides with the discovery of 14 stems of Ganoderma lucidum grass in biluotang, which is located in the back mountain of Zhouzhi, it is regarded as a sign of auspiciousness, so Junzhou was changed to Ruizhou, and Gao'an is still the name of the county, which is the governing seat of Ruizhou. In the Yuan Dynasty, the state was changed into a road, and Gao'an was governed by Ruizhou road.
In the Ming and Qing Dynasties, Lu was changed to Fu, and Gao'an was governed by Ruizhou.
In the third year of the Republic of China (1914), Jiangxi Province was divided into four districts, and Gao'an was under the jurisdiction of Luling road; in the 15th year of the Republic of China (1926), Lu'ling road was abandoned, and Gao'an was directly under the jurisdiction of Jiangxi Province; in the 21st year of the Republic of China (1932), Jiangxi Province was divided into 13 administrative regions, and Gao'an was under the jurisdiction of the first administrative region; in the 24th year of the people's Republic of China (1935), Jiangxi Province was reduced into eight administrative regions, and Gao'an was under the jurisdiction of the second administrative region; In 1939, Jiangxi Province was expanded into 11 administrative regions, and Gao'an was still the second administrative region; in 1942, Jiangxi Province was adjusted into nine administrative regions, and Gao'an was changed into the first administrative region.
On July 14, 1949, the people's Government of Gao'an county was established, which is under the jurisdiction of Nanchang District inspector general's office of Jiangxi Provincial People's government.
In January 1959, Nanchang Commissioner's office was renamed Yichun Commissioner's office, and Gao'an county was under the jurisdiction of Yichun Commissioner's office.
In February 1968, Yichun Commissioner's office was changed into Yichun regional Revolutionary Committee, and Gao'an county was under the jurisdiction of Yichun regional Revolutionary Committee.
In July 1978, the Yichun regional Revolutionary Committee was changed into Yichun regional administrative office, and Gao'an county was under the jurisdiction of Yichun regional administrative office.
On December 8, 1993, the State Council approved that Gao'an should be set up as a city instead of a county.
administrative division
By the end of 2018, Gao'an has jurisdiction over 2 streets, 19 towns, 2 townships and 1 reclamation farm: junyang street, Ruizhou street, Lanfang Town, Heling Town, huangshagang Town, Huibu Town, Xiangcheng Town, Tiannan Town, Jianshan town, Taiyang Town, Xinjie Town, Bajing Town, DUSHENG Town, Shinao town, Longtan Town, Yangwei Town, cunqian Town, hualinshan Town, Wuqiao Town, Xiangfu Town, Dacheng town and Shangcheng town Huxiang, wangjiaxu, Xiangcheng reclamation farm. There are 54 communities and 300 administrative villages.
geographical environment
Location context
Gao'an city is located in the northwest of the central part of Jiangxi Province, between 115 ° E and 28 ° n. the city government is 52 km away from Nanchang City, belonging to the middle and lower reaches of the Yangtze River Plain, covering an area of 2439.33 square kilometers.
topographic features
Gao'an city is high in the north and low in the south, with gentle and flat terrain in the middle. Low mountains and hills alternate with river valleys and plains. It is generally called "four mountains, one water, three fields, two roads and manors". The terrain is high in the north and low in the south, and the middle is gentle and flat. It is a saddle shape with low mountains and hills alternating with valley plain. The mountainous area is 926.915 square kilometers, accounting for 38% of the total area; the water area is 254.343 square kilometers, accounting for 10.4%.
The altitude of Gao'an city is generally between 40 and 100 meters. In the north, there is the extension of the remaining veins of Jiuling mountains, in the south, there are the meandering veins of Mengshan and Moshan mountains, and in the south of the middle, there are Heling and Fengling mountains. Hualinzhai in the north is the highest point in the city, with an altitude of 800 meters.
climate
Gao'an city has a subtropical monsoon climate with four distinct seasons, abundant rainfall, sufficient light and long frost free period. The annual average solar radiation in the territory is 1.06 million kcal per square meter,. The annual average rainfall is 1560 mm, mainly distributed from April to July, accounting for more than 60% of the annual rainfall, which is very easy to cause floods at the turn of spring and summer; the less rainfall from August to October, which is easy to cause drought in autumn. The annual average temperature is 17.7 ℃, the hottest month is from July to August, and the daily maximum temperature in the hottest month is above 40 ℃; the coldest month is January, and the extreme minimum temperature is minus 10.7 ℃. The annual average frost free period is 276 days.
hydrology
Jin River and Xiao River are the main rivers in Gao'an city. Jinhe River winds from west to East in the middle of the city, flows 70 kilometers to Xinjian County and flows into Ganjiang River; Xiaojiang River flows eastward to Quangang, Fengcheng City and flows into Ganjiang River.
natural resources
land resource
The total land area of Gao'an city is 243936.66 square hectares. Among them: 103521.26 hectares of cultivated land, accounting for 42.6%; 76754.17 hectares of forest land, accounting for 31.59%; 20256.83 hectares of water area, accounting for 8.34%; 42404.83 hectares of town, village, mining, transportation and other land, accounting for 17.46%. The soil texture is fertile, mainly red loam and paddy soil. Among them, red soil accounts for 50.3% of the soil area, and paddy soil accounts for 43.1% of the soil area.
water resource
Gaoan city has developed water system, rich surface water and groundwater resources. The surface runoff belongs to Jinhe, Xiaojiang, Liaohe and Yuanhe River basins. Among them, Jinhe River is the largest river with a flow of nearly 70 km and flows through 12 towns (street offices). The average annual runoff of the city is 2.038 billion cubic meters, and most areas are recharged by river runoff and groundwater. The north of Jinhe River is a simple hydrogeological area with weak weathering fissure water and pore fissure water, and the south of Jinhe River is a complex hydrogeological area with fissure cave water. The groundwater resources of the whole city are more than 400 million cubic meters, and the water quality is good. After years of development, 1538 water storage projects have been built in the city (including 1 large-scale type 2 reservoir, 7 medium-sized reservoirs, 48 small-scale type 1 reservoirs, 257 small-scale type 2 reservoirs and 1225 Shantang reservoirs), The total storage capacity is 587 million cubic meters; there are 343 water diversion projects (including 1 medium-sized project, 2 10000 mu projects and 340 small-scale PI sluice projects); the installed capacity of water lifting projects is 4362 sets, 49966 kilowatts; the hydropower reserves of the city are 25000 kilowatts, and the resources available for development are 13500 kilowatts. 24 small water power stations have been built, with an installed capacity of 4098 kilowatts.
mineral resources
There are 26 kinds of proven mineral resources in Gao'an, mainly including coal, limestone, kaolin, quartzite, porcelain stone, refractory clay, copper, aluminum, zinc, iron, gold, etc. Among them, the coal reserves are 260 million tons, ranking the top in the province; the limestone reserves only in the exposed range reach 1.34 billion tons, and the grade is high, so it is well-known in the whole country. Other major non-metallic mineral resources also have the characteristics of wide distribution, high quality and high development value.
Forestry resources
There are various plant species and vegetation types in Gao'an. There are more than 2000 species of plants, including 452 species of woody plants belonging to 237 genera of 80 families; the basic types of zonal vegetation are coniferous forest, evergreen broad-leaved forest, coniferous and broad-leaved forest, evergreen and deciduous mixed forest, bamboo forest, shrub, grass and so on. The area of forestry land is 84894.6 hectares, accounting for 34.8% of the total area of the whole city; the volume of forest standing trees is 3.174 million cubic meters, and the forest cover area is 1
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