Lanxi City, Jinhua City, Zhejiang Province

Located in the Midwest of Zhejiang Province, Lanxi City, Lanxi, is located in the middle reaches of the Qian Tang river. The geographical coordinates of the north of the Jinqui basin are 29 degrees 1'20 "- 29 degrees 27'30", 119 degrees 13'30 "119 degrees 53'50", 67.5 km east-west, 38.5 km wide north and south, 20.5 km from Jinhua, 132 km from Hangzhou, 1313 square kilometers, and 2018 registered residence at the end of 2018.

Guangxu's Lanxi County annals clearly stated at the beginning, "although the city is small, it should be the four Chong. It is located in the upper reaches of Hangzhou and Yan, the key to the gate of Quzhou and Wu, covering oukuo in the South and huishe in the north. Those who have appointed their positions are called the important areas in eastern Zhejiang, and they are not slandered. " Wujiang River and Qujiang River meet at the foot of Lanyin mountain to form Lanjiang River. They go northward to Meicheng to meet Xin'an River, which is called Fuchunjiang River. If they continue northward to Fuyang, they are called Qiantang River. Lanxi has been known as "the confluence of three rivers", "the waist of Six Rivers" and "the thoroughfare of seven provinces" since ancient times.

The city is adjacent to Jindong District and Wucheng District of Jinhua City in the southeast, Longyou County in the southwest, Jiande City in the northwest, and Pujiang County and Yiwu City in the northeast. The water system in Lanxi City belongs to Qiantang River system, which is mainly composed of three rivers (Qujiang, Jinhua and Lanjiang) and five rivers (Meixi, Ganxi, Chixi, youbu and madaxi). The city trees and flowers are camphor and orchid.

Evolution of organizational system

Many Paleolithic sites and stone tools have been found in Lanxi, which indicates that as early as 7000 years ago, there were ancestors living on the land of Lanxi.

From the summer to the Zhou Dynasty, Lanxi was in Yue. It belonged to Yue State in the spring and Autumn period and Chu state in the Warring States period. The county system was practiced in Qin Dynasty, and Lanxi County was Wushang County of Kuaiji County, which was caused by the Western Han Dynasty.

In 1921, Changshan County was located in the southwest of Wushang County, and Lanxi County was located in Changshan County.

In the first year of Wu Baoding (266), Dongyang county was set up in Changshan, and Lanxi belonged to Changshan County.

In 598, Changshan was changed into Jinhua County, and Lanxi belonged to Jinhua County.

Lanxi County was built in the fifth year of Xianheng (674 A.D.), and it was upgraded to Lanxi state in the first year of Yuanzhen (1295 A.D.).

Dali thirteen years (778) was promoted to tight county.

In 1073, it was promoted to Wangxian county.

In the first year of Yuanzhen (1295), it was promoted to be a state (a state without jurisdiction over counties) and still belonged to Wuzhou.

In 1370, the county was restored to Jinhua Prefecture. This is the cause of the Qing Dynasty.

In 1912, Lanxi was designated as a first-class county.

In 1914, Jinhua Road was set up in the abandoned government, which governed 19 counties of Jin, Qu and Yan, and Daoyin was stationed in Lanxi. In 1916, he moved to Quxian county.

In September 1933, Lanxi experimental county was established.

In August 1934, Lanxi District Office of the Commissioner of administrative supervision was established, which has jurisdiction over 8 counties of Jinhua Prefecture and 11 counties of Jiande, Tonglu and Fenshui.

In 1937, Lanxi district was renamed the fourth special district, and its residence was moved to Jinhua.

In 1949, Lanxi was liberated and the people's political power was established.

In November 1949, Lanxi City (county level, the only one in Zhejiang Province) was set up in the urban area. The next year, the city was withdrawn and merged into the county, and lanchen was changed into Lanxi.

On May 15, 1985, the State Council approved the removal of Lanxi County and the establishment of Lanxi City (county level). Lanxi is the first county-level city in Zhejiang Province.

administrative division

Lanxi City governs 6 streets, 7 towns and 3 townships (including 1 nationality township): Yunshan street, Lanjiang street, Shanghua street, Yongchang street, Chixi street and nubu street; Youbu Town, Zhuge Town, Majian Town, Xiangxi Town, Huangdian Town, Meijiang Town, Hengxi Town, Baishe Town, Lingdong town and Shuiting she town.

geographical environment

Location context

Lanxi City is located in the Midwest of Zhejiang Province, in the middle reaches of Qiantang River and the northern margin of Jinqu basin. Since ancient times, it has been known as "the confluence of three rivers", "the waist of Six Rivers" and "the thoroughfare of seven provinces". It is adjacent to Jindong District and Wucheng District of Jinhua City in the southeast, Longyou County in the southwest, Jiande City in the northwest, and Pujiang County and Yiwu City in the northeast.

The geographical coordinates of Lanxi City are 29 ° 5 ′ 20 ″ n to 29 ° 27 ′ 30 ″ E and 119 ° 13 ′ 30 ″ e to 119 ° 53 ′ 50 ″. It is 67.5 kilometers long from east to west and 38.5 kilometers wide from north to south, covering an area of 1310 square kilometers.

geology

Lanxi is located in the northern margin of Jinqu basin, geologically known as "Shaoxing Jiangshan deep fault zone". The rock mass is mainly sedimentary rock with a small amount of intrusive rock mass and subvolcanic rock mass.

The geological structure belongs to the Zhuji Quzhou depression in the western Zhejiang platform fold belt of the Yangtze paraplatform. The plate tectonics belongs to the late Proterozoic subduction zone of the Pacific plate. The city is a stable area where the peak ground motion acceleration is less than 0.05g.

landforms

The landform is Hilly Basin in the middle of Zhejiang Province. It is surrounded by mountains in the northeast, low hills in the southwest and plain in the middle. There are four mountains in the territory: Longmen Mountain and Jinhua mountain in the East, qianligang mountain in the northwest, and xianxialing mountain in the south. There are three hills: the northern hills, the Southern Hills and the Western Hills. There are two basins: Jinqu basin and Duntou basin. A plain: Sanjiang River valley plain. There are 822 square kilometers of mountains and hills, 403 square kilometers of basin plains and 85 square kilometers of water surface. Since ancient times, it has been known as "Six Mountains, one water and three fields".

hydrology

All rivers in the territory belong to the Qiantang River system. Qujiang River flows from west to East, Jinhua River flows from east to west into Lanxi City and forms Lanjiang River. Qujiang River is 23.3 km long, Jinhua River is 12.4 km long and Lanjiang River is 22.5 km long. Qujiang, Wujiang and Lanjiang have 13 first-class tributaries in the city, of which 5 have a rainfall collection area of more than 100 square kilometers: youbuxi, Chixi, madaxi, Ganxi and Meixi, commonly known as "Wuxi". The area of Lanjiang River Basin is 19467.5 square kilometers, including 18529 square kilometers above the "Sanjiangkou". The average annual surface runoff is 994 million cubic meters, 1500 cubic meters per capita; the average annual transit water is 17.28 billion cubic meters, 26000 cubic meters per capita.

At 20:15 on June 25, 2017, due to the rainstorm in Zhejiang Province, the water level of Lanxi station on Lanjiang River had a peak of 32.04m, which was the largest flood in Qiantang River Basin since the "June 21" catastrophic flood (33.49m) in 1955.

Climatic characteristics

The climate of Lanxi City belongs to East Asian subtropical monsoon region. It is warm and humid, with four distinct seasons, high temperature in summer and autumn, cold in winter and spring, and obvious summer drought in Meiyu. It was also affected by typhoon from July to September. It has the characteristics of basin climate and vertical distribution. The annual average temperature is 17.6 ℃, the annual average precipitation is 1476.5 mm, the annual total sunshine hours is 1766.2 hours, the annual average wind speed is 1.6 m / s, the annual average evaporation is 1388.6 mm, the annual average relative humidity is 76%, and the annual average frost free period is 264 days. Superior climate conditions create a good ecological environment, but at the same time, Meiyu drought is easy to form floods and droughts.

natural resources

Soil resources

There are five soil types in Lanxi: red soil, yellow soil, lithologic soil, fluvo aquic soil and paddy soil. Red soil and lithologic soil account for 28% of the total area respectively, which has great improvement potential. Paddy soil accounts for about 40% of the total area.

Biological resources

The vegetation is subtropical evergreen broad-leaved forest belt with various vegetation types and rich animal and plant resources. The vegetation in mountain area has obvious vertical distribution characteristics. There are 69760 hectares of forest land and 55033.3 hectares of forest land in Lanxi City. In 2005, the volume of standing trees was 1.851 million cubic meters, and the forest coverage rate was 49.48%.

mineral resources

The geological background and metallogenic conditions of the city are in the transitional zone between eastern Zhejiang and Western Zhejiang, which are different from both. The mineral resources that have been exploited and utilized mainly include stone coal, raw coal, limestone, phosphorus, clay, sand and stone, etc.

Population nationality

In 2016, 7017 people were born, the birth rate was 11.24 ‰, 4131 people died, the death rate was 10.13 ‰, and the natural population growth rate was 1.12 ‰. At the end of the year, the total registered residence population was 665 thousand and 100, of which 344 thousand were men and 321 thousand and 100 were women, of whom 260 thousand and 500 were urban and 404 thousand and 600 were rural. At the end of the year, the total number of households in the city was 219600, with an average household population of 3.03. According to the sample survey of population change in 2016, the permanent resident population at the end of the year was 565100, with an urbanization rate of 50.1%.

In 2017, there were 8092 births, with a birth rate of 12.19 ‰, 7742 deaths, a mortality rate of 11.66 ‰, and a natural population growth rate of 0.53 ‰. At the end of the year, the total registered residence population was 663 thousand, of which 342 thousand and 400 were men and 320 thousand and 600 were women, of whom 286 thousand and 100 were urban and 376 thousand and 900 were rural. At the end of the year, there were 217300 households with an average population of 3.05. According to the sample survey of population change in 2017, the permanent resident population at the end of the year was 566100, with an urbanization rate of 51.8%.

At the end of 2018, the registered residence population was 660 thousand and 500, of which 341 thousand were men and 319 thousand and 500 were women, of whom 284 thousand and 700 were urban and 375 thousand and 800 were rural. There are 6786 people born in the city, the birth rate is 10.27 ‰, the death rate is 8.72 ‰, and the natural population growth rate is 1.55 ‰. At the end of the year, there were 215800 households with an average population of 3.06. According to the sampling survey of population change in 2018, the permanent resident population at the end of the year was 567100, with an urbanization rate of 53.6%.

The majority of the residents are Han nationality, followed by She nationality, and there are still Miao, Hui and Han nationalities with a small population

Chinese PinYin : Zhe Jiang Sheng Jin Hua Shi Lan Xi Shi