Lezhi county, Ziyang City, Sichuan Province

Lezhi county, subordinate to Ziyang City, Sichuan Province, is located in the middle of Sichuan Basin, on the watershed of Tuojiang River and Fujiang River, between 30 ° 0 ′ 2 ″ - 30 ° 30 ′ 4 ″ N and 104 ° 45 ′ 2 ″ - 105 ° 15 ′ 2 ″ E. It is adjacent to Anju District of Suining City in the East, Anyue County and Yanjiang District in the south, Jianyang City of Chengdu City in the west, Jintang County of Chengdu City, Zhongjiang County of Deyang City and Daying County of Suining City in the north, and is only 77 km away from the provincial capital Chengdu.

Lezhi county has a total area of 1425 square kilometers, and it has 1 townships, 18 towns and 2 streets in 2019. In 2015, the registered residence population was 837 thousand and 602 (permanent residents 515 thousand and 200). In 2015, the gross national product (GDP) of the county area was 17 billion 810 million yuan, an increase of 8.9% over 2014. The terrain inclines from northwest to Southeast. There are more than 20 rivers, including Panlong River, Quandong River and Jingshi river. It has a subtropical monsoon climate with an average annual temperature of 16.7 ℃ and an average annual precipitation of 949.4 mm.

Lezhi county was established as duoye County in the Northern Zhou Dynasty and changed into PuCi County in the Sui Dynasty. Tang Wude three years (620 years) analysis set up Lezhi county. It is named after the Lezhi Lake in the east of the county. There are "Chen Yi's former residence", "Sleeping Buddha in Ma Luo", Baoguo temple in Sui Dynasty, Qingjian south tower and other places of interest. There are 318 national highway, 319 National Highway and 106 provincial highway running through Lezhi county. Chengdu Anyu Expressway and suizimei Expressway connect the north and the south.

Historical evolution

Before the county was built, it was under the jurisdiction of ancient Shu, Qin, Han, Jin, Southern Dynasties (song, Qi, Liang and Chen), Northern Wei and Western Wei.

In the fourth year of Jiande (575) of the Northern Zhou Dynasty, the county was located in duoye County, which was subordinate to PUCI county. Since then, the county has been established.

In 583, PUCI county was abolished and duoye County belonged to Puzhou.

In 605, the first year of Daye in Sui Dynasty, Puzhou entered Zizhou, and PUCI county was subordinate to Ziyang County.

In the second year of Tang Wude (619), PUCI county was restored to Puzhou.

Tang Zhenguan first year (627) county with Puzhou Li Jiannan road.

Tang Shangyuan two years (675) with the Puzhou Li Jiannan road Dongchuan.

In 742, Tang Tianbao changed Puzhou into Anyue County.

In the first year of Qianyuan (758) of Tang Dynasty, the counties were changed to prefectures and prefectures.

At the end of the Tang Dynasty and the Five Dynasties, the county was founded by the former Shu (907-925), the latter Tang (925-934) and the latter Shu (934-965), all following the Tang system.

In the third year of Qiande (965) of the Northern Song Dynasty and the East and west of Jiannan road in the Tang Dynasty, Xichuan road was established, and the county was subordinate to Puzhou.

In the fourth year of Xianping (1001) of the Northern Song Dynasty, Zizhou road was set up separately.

In 1118, the first year of Chonghe in the Northern Song Dynasty, Zizhou road was changed to Tongchuan Road, and the county was as old as before.

In the middle period of Southern Song Dynasty (around 1256), Puzhou and Lezhi were abolished.

In 1286, the county was located in Suining Prefecture.

Anyue County was restored in the fourth year of the Yuan Dynasty (1344).

In the first year of Chenghua (1465) of Ming Dynasty, it was divided into six townships of Anyue and restored to Lezhi county, which belonged to Tongchuan Prefecture.

In 1514, the county was subordinate to Jianzhou, Chengdu Prefecture. In 1522, the county belonged to Tongchuan Prefecture.

In the third year of Shunzhi (1646) of the Qing Dynasty, Shu was leveled and the county was located in Tongchuan Prefecture along the Ming Dynasty.

In 1663, the county was incorporated into Suining.

In 1728, Anyue County was restored and divided from Lezhi county.

In 1802, the county belonged to Tongchuan Prefecture of beidaochuan.

In the first year of the Republic of China (1912), North Sichuan Road was cut off.

In the second year of the Republic of China, Fu, Ting and Zhou were abolished and North Sichuan Road was restored. County Zhili Chuanbei road.

In the third year of the Republic of China, Chuanbei road was changed to Jialing Road, and the county was subordinate to Jialing Road.

In 1928, Jialing Road was abolished and the county was directly under the jurisdiction of Sichuan Province.

In 1935, Sichuan government was unified, and several administrative supervision districts were established. The county was the 12th administrative supervision district.

On December 14, 1949, Lezhi county was liberated, and the county belonged to Suining District of northern Sichuan administrative office.

In September 1952, Sichuan Province was restored, and Suining district and its subordinate counties were subordinate to it.

In October 1958, the county was transformed into Neijiang district.

In 1968, Lezhi county was located in Neijiang area.

In February 1985, Neijiang Prefecture was restructured into a city, and the county belongs to Neijiang City.

In February 1998, Lezhi county was transformed into Ziyang district.

In December 2000, Ziyang Prefecture was restructured and established as a city, and Lezhi county was subordinate to Ziyang City.

administrative division

In 2019, Lezhi county governs 1 Township, 18 towns and 2 streets: 2 streets of Nanta street and Tianchi street, 18 towns of Shifo Town, Huilan Town, Shituan Town, Tongjia Town, Baolin Town, Dafo Town, Liang'an Town, Jinshun Town, zhonghechang Town, Laodong Town, Zhongtian Town, foxing Town, Panlong Town, Dongshan Town, Tonglu Town, Gaosi Town, Longmen town and Shengchi Town, and 602 towns of shuanghechang town Administrative villages, 30 communities. The government is in Tianchi street.

geographical environment

Location context

Lezhi county is located on the watershed of Tuojiang River and Fujiang River, in the center of central Sichuan Basin, between 30 ° 0 ′ 2 ″ - 30 ° 30 ′ 4 ″ N and 104 ° 45 ′ 2 ″ - 105 ° 15 ′ 2 ″ E. It is adjacent to Anju District of Suining City in the East, Anyue County and Yanjiang District in the south, Jianyang City of Chengdu City in the west, Jintang County of Chengdu City, Zhongjiang County of Deyang City and Daying County of Suining City in the north. It is 42.5 kilometers from east to west, 56.1 kilometers from north to south, covering an area of 1425 square kilometers.

topographic features

Lezhi county is located in the hinterland of the giant subsidence basin in Sichuan Province. The terrain in the northwest is slightly higher than that in the southeast. In the middle, the water dividing line of Tuo River and Fujiang River runs through the north and south, with a slight uplift. The relative altitude of the whole territory is 270 meters, with an average altitude of 446.6 meters. The highest point is in tongzipo, Liangan Town, Northwest China, with an altitude of 596.3 meters. The lowest point is in xiaoyuanbazi, Panlong Town, East China, with an altitude of 297.0 meters. The elevation of Dafu, Quansheng, zhonghechang and other towns and areas to the north is generally 450-590 meters, with a specific height of 100-190 meters. The rock strata in the middle part of Penglaizhen Formation form ridge shaped deep hills. The ridge extends far, and the sandstone on the slope forms scarps with a slope angle of 25-40 degrees. Further south, Liangshui, Laodong, Baolin and other villages and towns are generally 400-500 meters above sea level and 50-100 meters above sea level. The middle and lower section of Penglaizhen formation is composed of tower shaped middle hills. The valley between hills is wide and gentle with small flat dams. In the southeast of Huilan, Dongshan, Shifo and other areas, the lower Penglaizhen Formation strata constitute a gentle medium mound. In this area, the reverse slope sandstone is mostly scarp, while the consequent slope is gentle with a slope angle of 5-10 degrees. In the southern part of Tonglu, foxing and Zhongtian, there are broad and gentle shallow hills composed of mudstone of Suining Formation and sandstone of lower Penglaizhen formation, with an altitude of 400-450 meters and a specific height of 20-40 meters.

Lezhi county is a Jurassic stratum with mixed sandstone and mudstone. Mudstone is easier to be weathered and disintegrated than sandstone. After weathering and denudation, it is flattened into gentle hills and slopes, with one slope and one ridge. Each hill is a multistage platform. After long-term denudation, the sandstone has formed a complex geomorphic landscape with vertical and horizontal gullies, scattered water channels, round gentle hills, table shaped hills, tower top hills, platforms, depressions, wide valleys and narrow valleys. There are more than 3350 hills in the whole area, standing in more than 400 winding valleys, with the geomorphic characteristics of "there are plates in the mountains, and there are mountains in the plates". According to the depth of gully cutting to the surface, the county is divided into five types: deep hill, middle hill, shallow hill, mountain, depression and platform.

hydrology

Lezhi county is located in the watershed of Fu River and Tuo River, which is a low value area of precipitation and runoff in Sichuan Basin. The water dividing line of the two rivers runs through the county from north to south, forming two dendritic water systems of East and West. The eastern Fujiang River basin covers an area of 541.32 square kilometers, accounting for 38% of the area of Lezhi county. The runoff of Zhongjiang, Daying, Anju, Anyue and other counties (districts) flows into Fujiang River from Qijiang River and Anju river. The Western Tuojiang River basin covers an area of 883.20 square kilometers, accounting for 62% of the total area. The runoff of Jintang, Jianyang, Yanjiang, Anyue and other counties (cities and districts) flows into Tuojiang River from Yanghua River and Mengxi river. The county is the famous source of rivers in Sichuan. There are 20 rivers in Lezhi county, with a total length of 312 kilometers, which all originate from the county and flow outside the county. The Fujiang River system includes Panlong River, Wantan River, backflow River, Longxi River, Xianglong River, Yongfeng River and other major rivers.

climate

Lezhi county is located in the mid latitude monsoon region, which belongs to the subtropical monsoon climate. The climate is mild, the four seasons are distinct, the rainfall is abundant, the winter is warm and dry, the humidity is high, the fog is more, the sunshine is less, the average daily temperature is 16.7 ℃, the average annual sunshine is 1330 hours. The average annual precipitation is 900 mm, but the distribution is uneven. The summer rainfall accounts for half of the annual rainfall, and it is easy to dry in winter and spring.

natural resources

mineral resources

The mineral resources of Lezhi county include bittern, natural gas, coal, copper, gypsum, stone, shale and clay. Bittern, stone, shale and clay are the most abundant. In history, the annual output of Flower salt was 140000 kg.

Biological resources

There are 876 species of animals in Lezhi county, which are divided into 15 categories, 73 orders, 214 families. More than 300 species have been used and more than 40 species have been bred and created wealth for the people of Lezhi county. There are 382 species belonging to 279 genera and 142 families, including 135 species of trees, 15 species of bamboos, 71 species of flowers, 102 species of herbs and 59 species of grasses. In Lezhi county, 281 species were planted, especially grain, cotton, oil, fruit and mulberry. The utilization rate of forest trees is also high, with 153600 mu of Forestation in 20 years, 605000 mu of woodland in 2005, and 1.5 million cubic meters of standing trees, 7.89 times of 190000 cubic meters in 1985. The forest coverage rate has increased from 15.9% in 1986 to 32.8%.

Population nationality

population

In 2015, there were 320654 households in Lezhi, 837 thousand and 602 registered residence and 515 thousand and 200 permanent residents. Population of Lezhi county