Which district does Mianyang, Sichuan belong to?
2. Mianyang:
The prefecture-level cities under the jurisdiction of Sichuan Province are located in the northwest of Sichuan Basin, in the middle and upper reaches of Fujiang River, and adjacent to Qingchuan County, Jiange County of Guangyuan City and nanbu county County and Xichong County of Nanchong City in the east. It is connected to Shehong County and Daying County in Suining City in the south; It is adjacent to Luojiang County, Zhongjiang County and Mianzhu City in Deyang City in the west; The northwest borders Jiuzhaigou County, Songpan County and Maoxian County of Aba Tibetan and Qiang Autonomous Prefecture and Wenxian County of Longnan City, Gansu Province. It is located between east longitude103 45'-105 43' and north latitude 30 42'-33 02', and belongs to subtropical humid monsoon climate. The city covers a total area of 20,200 square kilometers, governs 5 counties and 3 districts 1 city, and has a total resident population of 48 1.900(20 16).
In the second year of Emperor Gaozu of the Western Han Dynasty, a county was established. Guanghan County was established in the sixth year of Emperor Gaozu. 1950, Mianyang area was established, belonging to the western Sichuan administrative region. 1952, a leader in Sichuan province. 1953, assigned to Wenjiang area. 1979 Mianyang County was revoked and the county level was merged into Mianyang City. From 65438 to 0985, Mianyang was promoted to a prefecture-level city.
Mianyang, formerly known as "Fucheng" and "Mianzhou", is the hometown of the world-famous great romantic poet Li Bai. It is the northern central city of Chengdu plain urban agglomeration and one of the seven regional centers of Chengdu-Chongqing economic circle. Famous scenic spots include: Yuewanglou, Li Bai's hometown, Qiqu Mountain, Honghu and so on.
3. Administrative divisions:
Mianyang City governs three districts: Fucheng District (including Mianyang High-tech Industrial Development Zone,? Mianyang economic and technological development zone. Mianyang Science and Technology City Modern Agricultural Science and Technology Demonstration Zone), Youxian District (including? Hai Xian tourist resort? Mianyang Science City) and Anzhou District; 5 counties: Santai County, Yanting County, Zitong County, Pingwu County and Beichuan Qiang Autonomous County; Escrow 1 County-level city: jiangyou city.
4. Geographical environment:
Location context:
Mianyang City is located in the northwest of Sichuan Basin. Middle and upper reaches of Fujiang River. East neighbor? Guangyuan city? Qingchuan county,? Jiange county and? Nanchong city? Nanbu county? Xichong county; Suining city south? Shehong county; Luojiang county, Deyang city, western China? Zhongjiang county,? Mianzhu City; Northwest and Aba Tibetan and Qiang Autonomous Prefecture and Gansu Province? Wenxian county borders. Geographical coordinates are: 30 42' ~ 33 03' north latitude and103 45' ~105 43' east longitude. Mianyang is a belt-shaped city with northwest-southeast trend, with a width of about 144 km from east to west and a length of about 296 km from north to south.
Hydrological situation:
Affected by topography, Mianyang City has abundant precipitation, large runoff, vertical and horizontal rivers and developed water system. There are more than 3000 rivers and gullies in Mianyang. All rivers and gullies flow into Fujiang, Bailong River and Xihe River, tributaries of Jialing River, respectively, which belong to Jialing River system.
Climatic characteristics:
Mianyang city belongs to the humid monsoon climate zone in the northern subtropical mountainous area. Mianyang annual average temperature 14.7 ~ 17.3℃. Pingwu County is the lowest, with 14.7℃. The annual average temperature in Mianyang has little interannual change, and the difference between the highest year and the lowest year is only about 65438 0.5℃. The extreme maximum temperature in Mianyang is 36. 1 ~ 39.5℃, and the extreme minimum temperature is -4.5 ~-7.3℃. Mianyang is rich in precipitation, which varies greatly from year to year. The average annual precipitation in Mianyang is 825.8 ~ 14 17mm. Its distribution characteristics are: less in the north and south, more in the middle; There are few in the East and many in the West. Generally the wind speed is small. Only when there is a large-scale invasion of cold air in the north in winter and spring or there is a thunderstorm in summer will there be windy weather. The northeast wind to the north wind prevails in this city. The annual average foggy days in this city are 3.3 ~ 6 1.0 days. Mianyang City is the highest and Pingwu County is the least.
Geological features:
Mianyang mountain area accounts for 6 1.0%, hilly area accounts for 20.4%, and Pingba area accounts for 18.6%. The terrain is high in the northwest and low in the southeast, and the terrain fluctuates greatly. The first mountain range facing the Sichuan Basin in the northwest is the Longmen Mountains in the northeast and southwest, with an altitude of 1000 meters to more than 3000 meters. West of it? Minshan and Motianling in the north are more than 3000 meters above sea level. The highest point is the second peak of Minshan Mountain at the junction of Pingwu County and Songpan County (southeast peak of Xuebaoding in Songpan County), with an altitude of 5440 meters. The southeast is located in the hilly area of Sichuan basin, with an altitude of 400 ~ 600 meters, and the lowest point is located at the short gully mouth of Yongjiang River Valley in Jianzhong Township, Santai County, with an altitude of 307.2 meters. The height difference between the highest point and the lowest point of the city is 5092.8 meters.
Geomorphology is obviously controlled by geological structure. What's the difference in the northwest? Influenced by the northeast fold fault of Longmenshan, the north-south structure of Minshan and the east-west structure of Motianling, the mountain ranges are northeast-southeast-west and north-south-east; The shape of the mountain is also related to geological structure and lithology. The southeast is located at the junction of North Sichuan Depression, West Sichuan Depression and Central Sichuan Uplift of Yangtze paraplatform. Due to the hard basement of the platform, the crust is mainly uplifted in geological history, and the strata are less affected by horizontal movements in various periods, with some gentle and wide folds, and the strata generally have a small dip angle, forming hilly, platform and Fangshan undulating landforms.