Where is Guang 'an in Sichuan located in the motherland?

Guang 'an is the hometown of Deng Xiaoping, the chief architect of reform, opening up and socialist modernization. Located in the southwest of People's Republic of China (PRC) and the east of Sichuan Basin, it is one of 18 prefecture-level cities under the jurisdiction of Sichuan Province. 1July 3, 9981day, Guang 'an City was formally established. Guang 'an City governs Guang 'an District, Qianfeng District, Linshui County, Yuechi County and Wusheng County, and manages Huaying City. The Huaying Mountain Range divides Guang 'an into Guang 'an District, Qianfeng District, Yuechi County, Wusheng County and Huaying City. It is located in the hilly area of central Sichuan, with little surface fluctuation and criss-crossing gullies. Jialing River and Qujiang River meander southward into the Yangtze River in the form of deep bedrock. Linshui County is located in the east of Huaying Mountain Range and in the parallel ridge and valley area of East Sichuan. Tongluo Mountain and Mingyue Mountain are distributed in parallel in the northeast, and the Great Red River and Yulin River flow into the Yangtze River from north to south. Guang 'an has a warm climate, abundant heat, abundant rainfall, high air humidity, less sunshine, short frost period and low wind.

Guang 'an belonged to Liangzhou in ancient times and Yongzhou in Yin. After the destruction of Yin in Zhou Dynasty, Ji was given the surname of Ba, and the Bazi State was established, to which Guang 'an belonged. In the fifth year of Shen Liang, King of Zhou Dynasty (3 16), King Qin Huiwen ordered Zhang Yi and Sima Cuo to send troops to destroy Bashu, and the county of Sheji was located in Jiangzhou (now Chongqing), and Guang 'an was under the jurisdiction of Ba County.

In the first year of Jianyuan in the Southern Qi Dynasty (479), Hanchu County (now Wusheng County) was established in the north of Dianjiang (now Hechuan City). In the third year of Yuping in Liang Wudi in the Southern Dynasty (522), according to analysis, Dangqu County was located in Shi 'an County (now Guang 'an District). In the third year of Liang Datong in the Southern Dynasty (537), it was analyzed that the eastern part of Dangqu County was located in Linshui County and belonged to a neighboring county. In the third year of the Western Wei Dynasty (556), neighboring states were merged into Quzhou, and Linshui County belonged to Linshan County of Quzhou.

In the third year of Emperor Wendi (583), xian county was changed to Quzhou. In the 18th year (598), it was changed from Anxian County to Yicheng County (now Guang 'an District). In the first year of Yang Di's great cause (605), he moved to Wang Jiaping, Xiaoxi Township. In the third year of Daye (607), Quzhou was changed to Dangqu County, which still governs Xiangcheng County and Linshui County.

In the first year of Wude in Tang Gaozu (6 18), Yicheng County was renamed Shi 'an County. According to the analysis, some areas are located in Fengle County, which governs Hengsheng Gucheng Village (now Gucheng Village of Hengsheng Town in Guang 'an District), belonging to Shannan West Road and Yunhe State. In the same year, neighboring states were rebuilt, under the jurisdiction of Linshui County. In the second year of Wude (6 19), Linshui County was changed to Quzhou. In the eighth year of Wude (625), Fengle County was abandoned and its land was restored to Shi 'an County. Tang Wuzhou lived for two years (697), and Yuechi County was established in Nanchong County (now Gaoping District of Nanchong City) and Xiangru County (now Peng 'an County), belonging to Zhouzhou County of Jiannan Province. In the first year of Tianbao of Emperor Xuanzong of the Tang Dynasty (742), xian county was changed to Qujiang County, and Quzhou County was changed to Linshan County. In the first year of Gan Yuan, Tang Suzong (758), the neighboring mountain county was Quzhou, and Shi 'an County and Linshui County belonged to Quzhou.

In the second year of Song Taizu Kaibao (969), Song Taizu sent troops from Xichuan to Denghui Town at the foot of Ping Xiu Mountain in Qujiang County at the request of Liu Ren. Taking the meaning of "land expropriation", it was named Guang 'an Army, which belonged to Zizhou Road and commanded Qujiang County, Xin Ming County and Yuechi County of Hezhou County. One is in Guang 'an, starting from here. At that time, Qujiang County, as an affiliated county of Guang 'an Army, moved its administrative office from Xiaoxi Wang Jiaping to the northeast of Nonghui Town. In the third year of Song Ningzong Jubilee (1207), Hexi County was added. In the third year of Song Lizong Chunyou (1243), the Mongolian army entered Sichuan, and the Guang 'an Army moved to Daliang City (now Daliang Village, Xiaojing Township, Guang 'an District). In the second year of Song Duzong Xianchun (1266), Guang 'an Army was changed to Ningxi Army, and its subordinate institutions remained unchanged.

In the fourth year of Yuan Shizu to Yuan Dynasty (1267), the county in the early Han Dynasty was changed to Wu Shengjun, and later it was promoted to Dingyuan County. In the 12th year of Yuan Dynasty (1275), Ningxi Army entered Yuan Dynasty. In the same year, the government moved back to Houhui Town from Daliang City. In the 15th year (1278), Ningxi Army was abolished, and Xin Ming and Hexi counties entered Yuechi County, while Qujiang and yuechi county counties were placed under Shunqing Prefecture (now Nanchong City). In the twentieth year (1283), Guang 'an Prefecture was established, which governed Qujiang County, led Qujiang County and yuechi county County, and adjusted Shunqing Road. In the same year, Linshui County was merged into Dazhu County and changed to Linshui Town. In twenty-four years (1287), Dingyuan Prefecture was reduced to Dingyuan County, which belonged to Liuhe Prefecture in Chongqing.

Ming Taizu Hongwu four years (137 1), changed Guang 'an House to Guang 'an House, transferred to Shunqing House, led Qujiang County and Yuechi County, and nine years (1376), increased Qu County and Dazhu County. In the tenth year of Hongwu (1377), Qujiang County was abandoned, and its land was incorporated into Guang 'an House, which governed Yuechi County, Quxian County and Dazhu County. In the first year of Chenghua in Ming Xianzong (1465), Linshui County was added. In the seventeenth year of Chongzhen (1644), Zhang Ruchuan established the Daxi regime.

In the fourth year of Shunzhi in Qing Dynasty (1647), the Qing army destroyed the Daxi regime and Guang 'an Prefecture was incorporated into the territory of Qing Dynasty. However, it is still possible for people to take it for themselves and move to Zhai, Lai Su. In the eighth year of Shunzhi (165 1), the land came from Su Zhai and moved to Zhushanzhai. In the fourth year of Kangxi (1665), he moved back to Denghui Town and led Yuechi County, Quxian County, Dazhu County and Linshui County. In seven years (1668), Yuechi County was abandoned and its land was incorporated into Guang 'an Prefecture. The other three counties belong to Shunqing County, which was a decentralized state without counties at that time. In eight years (1669), Dingyuan County was evacuated to Hezhou. In sixty years (172 1), Yuechi County was restored as Shunqing House on Lichuan North Road. In the sixth year of Yongzheng (1728), Dingyuan county was restored, belonging to Chongqing prefecture in eastern Sichuan. In the third year of Xuantong (19 1 1), the people's army of northern Shu occupied the city, established the "Dahan northern Shu military government", and announced that Guang 'an government had left the Qing government and became the military government residence.

In the first year of the Republic of China (19 12), the "Dahan Shubei Military Government" was abolished, and Guang 'an Prefecture was transferred to northern Sichuan, announcing the commander's mission. In the second year of the Republic of China (19 13), Guang 'an Prefecture was changed to Guang 'an County. Guang 'an County, Linshui County and Lichuan North Road, Yuechi County. In the third year (19 14), Sichuan North Road was changed to Jialing Road, and Guang 'an County, Linshui County and Yuechi County belonged to it. In the same year, Dingyuan County was renamed Wusheng County and belonged to Dongchuan Road. In twenty-four years (1935), Sichuan administrative supervision area was established to unify Sichuan government. Guang 'an County and Linshui County belong to the tenth administrative supervision area of Sichuan Province. Yuechi County and Wusheng County are under the 1 1 administrative supervision area of Sichuan Province.

In the first year of People's Republic of China (PRC) (1949), in February of the same year, Linshui, Vu Thang, Guang 'an and yuechi county counties were liberated one after another.

1950, during the Republic of China, the central people's government changed the patrol area into a special zone. Yuechi County and Wusheng County belong to Nanchong District of North Sichuan Administrative Region, while Guang 'an County and Linshui County belong to Dazhu District of East Sichuan Administrative Region.

Look at Guang 'an (2) 1953 again. Dazhu District is abolished, Guang 'an County is included in Nanchong District, and Linshui County is included in Daxian District of North Sichuan Administrative Region.

1968 and 1970, Nanchong area and Daxian area were successively changed to Nanchong area and Daxian area, and the counties remained unchanged.

1978 165438+1October 10,16 Guang 'an and Yuechi counties set up villages and towns, and changed to Huaying City on February 4th, 1985.

1On July 2, 993, the State Council approved the establishment of Guang 'an area, which governs Guang 'an County, Yuechi County and Wusheng County in Nanchong area, and manages Huaying City and Linshui County in Daxian area.

65438+July 3 1, 1998, Guang 'an was demolished, and Guang 'an County was changed to Guang 'an District of Guang 'an City.

2065438+On February 22, 2003, with the approval of the State Council, the Sichuan Provincial People's Government approved the establishment of Qianfeng District of Guang 'an City, and placed seven towns, namely Kuige Street, Qianfeng District, Daishi, Guantang, Hu 'an, Guangxing, Guangge and Guixing, and five townships, namely Guanghui, Longtan, Xiaojing, Xinqiao and Baocheng, under the jurisdiction of Qianfeng District.

2. Geographical environment

Location context

The geographical coordinates of Guang 'an are 30 01'-30 52' north latitude, 0/05 56'-10719' east longitude, east-west width 134.5km, and north-south length of 93.6km. Guang 'an City is fan-shaped and distributed between the hills in the middle of Sichuan and the parallel ravines, which is the relay zone for the development of the Three Gorges reservoir area. Guang 'an is the nearest prefecture-level city in Sichuan province adjacent to the main city of Chongqing, and is known as the "gateway to eastern Sichuan".

Climatic characteristics

Guang 'an is located in the humid monsoon climate zone in the middle subtropical zone, with warm climate, abundant heat, abundant rainfall, high air humidity, less sunshine, short frost period and strong wind. The annual average temperature 16℃, the average temperature in Leng Yue (65438+ 10) is 3℃, and the average temperature in the hottest month (July) is 33℃. The annual accumulated temperature is 5600℃, which is ≥ 10℃ for many years and the frost-free period is 306-328 days. The annual average precipitation is 1200mm, and 43% of the precipitation is concentrated in the summer when crops grow vigorously. The average runoff coefficient for many years is 0.48, that is, 48% of precipitation flows into rivers, and 52% is absorbed by soil and consumed by plant transpiration. Plants flourish all year round, and there are no seasonal rivers.

optical energy

Guang 'an is one of several areas with less sunshine and low radiation value in China, with more clouds and less sunshine, and cloudless weather in Wan Li is rare. The average sunshine hours for many years are between 1200 hours and 1342 hours. However, the sunshine is synchronized with the farming season. The sunshine is the most abundant in midsummer and begins to decline in September. The annual solar radiation energy is 87. 8 kcal/cm2. April-September is the period with the most light energy, heat energy and precipitation, which is beneficial to the growth and development of crops in Da Chun. According to the calculation, the light energy utilization rate of different farming systems in Guang 'an City is only 0.52% ~ 1.4L%, and the visible light energy utilization potential is huge.

heat energy

The latitude difference between the north and south of Guang 'an is only 0.47 degrees, and the horizontal temperature difference is very small and the vertical temperature difference is very large. The annual average temperature of the whole city 17℃ has little interannual change and obvious monthly change. The most Leng Yue is 65438+ 10 month, with an average monthly temperature of 3℃. The hottest month is July, with an average monthly temperature of 27℃, extreme low temperature of -3.8℃ and extreme high temperature of 40.5℃. In a year, the general trend of temperature change is1the temperature rises gradually from mid-October to late July, and decreases gradually in early August, especially from late August to mid-September. There is a saying that "a rain is autumn". 165438+ The second obvious cooling period appeared in the early to late days of 10, and gradually entered winter.

deposit

The average annual precipitation in Guang 'an is1014 mm ~1282 mm, the longest year is 1485 mm, and the youngest year is 836.6 mm During the year, the precipitation in each season is different. It is 209mm ~ 275mm in spring, 40 1 mm ~ 405mm in summer, 278mm ~ 320mm in autumn and 37mm ~ 58mm in winter. Temperature and precipitation tend to be consistent. This rainy and hot climate is conducive to crop growth.

topography

Guang 'an Rural Part II Guang 'an runs through Huaying Mountain in the southeast and divides Guang 'an into two geomorphic units. Yuechi County, Guang 'an District, Qianfeng District, Wusheng County and Huaying City, west of Huaying Mountain Range, are located in the hilly area of central Sichuan and are part of the "red hills" in Sichuan. The surface is not undulating, and the ravines are vertical and horizontal. Jialing River and Qujiang River meander southward into the Yangtze River in the form of deep bedrock. The exposed strata are mostly Jurassic sandstone and mudstone with gentle shape. The old valley is flat and open, divided into low hills and shallow hills, forming unconnected dams in the hilly landform. The soil is fertile and the rice fields are concentrated. Linshui County is located in the east of Huaying Mountain Range and in the parallel ridge and valley area of East Sichuan. Huaying Mountain, Tongluo Mountain and Mingyue Mountain are distributed in parallel in the northeast, with a distance of 8- 15km. There are two long and narrow valleys between the three mountains. The Great Red River and Yulin River run through the bottom of the valley from north to south, and flow into the Yangtze River through Chongqing Changshou and Yubei. On both sides of the river are horizontal terraces and rice fields. The highest point in the city is the main peak of Huaying Mountain, with an altitude of 1704. 1 m, and the lowest point is Yulin Valley, with a normal water level elevation of185m and a relative elevation difference of1519m. The hills in the basin are 300-500m above sea level, and only jincheng mountain is 824.6m above sea level. The area of middle hills and shallow hills in the territory is 409 1 km2, accounting for 64.49% of the city's land area; The deep mound covers an area of 270 square kilometers, accounting for 4.26%; The flat dam covers an area of 509 square kilometers, accounting for 8.02%; Mountain area 1477 km2, accounting for 23.23%.