Bijiang District, Tongren City, Guizhou Province

Bijiang District, belonging to Tongren City, Guizhou Province, is located in the northeast of Guizhou Province, in the east of Tongren City, in the middle of Wuling mountains, adjacent to Hunan, Chongqing and Hubei provinces, Wanshan District, Jiangkou county and Songtao Miao Autonomous County of Tongren City, as well as Fenghuang, Mayang and Zhijiang districts and counties of Hunan Province, with a total area of 1012 square kilometers.

In 2011, the county-level Tongren City of Guizhou Province was changed from a city to a district and renamed Bijiang District, a newly established prefecture level Tongren City. It has the reputation of "the Pearl of eastern Guizhou" and is one of the six key construction center cities in the poverty alleviation plan of Wuling Mountain. There are national AAAA scenic spots, Daming border town, the first batch of cultural industry demonstration base in Guizhou Province, national AAAA scenic spots and Jiulong cave.

In 2019, Bijiang District governs 7 streets, 3 towns and 5 townships. In 2020, the regional GDP of the whole region will reach 22.951 billion yuan, with a year-on-year growth of 5.9%.

Historical evolution

The origin of place names

At the confluence of the big and small rivers in the south of Tongren City, there is a copper cliff standing upright. It is said that the fisherman got three bronze Buddhas in the river, so it is called "Tongren". "Ren" and "Ren" are homophonic.

History of construction

In the 11th year of Yongle in Ming Dynasty (1413), Tongren County, Tongren Prefecture and Tongren County were established.

Tongren County was established in 1913.

Liberation in November 1949, the establishment of the county people's government, Tongren administrative inspector office.

On August 21, 1987, the county was replaced by the city.

In 2011, the reply of the State Council on approving Guizhou Province to abolish Tongren area and establish prefecture level Tongren City (guohan No. 131): abolish county-level Tongren City and establish Bijiang District of Tongren City. The former county-level Tongren City (excluding Chadian Town, Yutang Township and Daping township) is the administrative region of Bijiang district.

In September 2018, Guizhou Provincial People's government issued a circular saying that 14 counties (districts) including Bijiang district were approved to withdraw from poverty-stricken counties.

administrative division

Division evolution

In 1997, Tongren City governed 4 streets, 5 towns and 7 ethnic townships: Shizhong street, Huanbei street, Hexi street, Xieqiao street, Chadian Town, Chuandong Town, Bahuang Town, Yangtou Town, YUNCHANGPING Town, tongmuping Dong Township, Yutang Dong Miao Township, Daping Dong Tujia Miao Township, Heping Tujia Dong Township, Huashi Dong Miao Tujia Township, Wawu Dong Township and liulongshan Dong Tujia township.

In 2003, Tongren City governs 4 sub district offices, 5 towns, 7 ethnic townships, 150 village committees, 16 community neighborhood committees and 7 neighborhood committees.

On October 13, 2005, with the approval of the provincial government, Tongren adjusted some administrative divisions of Huanbei sub district office, Xieqiao sub district office, Yangtou town and Tujia township of Dong and Miao Nationalities in Huashi, and set up lighthouse sub district office. Dengta sub district office governs Mayan village and Gongtong village under the jurisdiction of Yangtou Town, Huatang village under the jurisdiction of talc Dong Miao Tujia Township, zhaigui village and ganzichong village under the jurisdiction of Xieqiao sub district office, Dengta village, farmland village and paper factory residents committee under the jurisdiction of Huanbei sub district office.

By the end of 2007, it had jurisdiction over 5 streets, 5 towns, 7 ethnic townships, 95 administrative villages, 16 communities and 5 neighborhood committees.

On January 5, 2011, according to the spirit of Guizhou provincial government's reply on Approving the administrative region of Xieqiao street in Tongren City to be under the jurisdiction of Wanshan Special Zone, Xieqiao, tangjiazhai, Chuxi, longmen'ao, Shizhu, wawuping villages and Xieqiao community neighborhood committees of Xieqiao street in Tongren City were under the jurisdiction of Wanshan Special Zone; DAAO village of Xieqiao street was under the jurisdiction of Huanbei street in Tongren City.

From February 28, 2011, the jurisdiction of Xieqiao district was transferred from Tongren City to Wanshan Special Zone.

In December 2015, the District People's government moved to Liangwan administrative center located in Chuandong street.

On May 21, 2019, Jieshi middle street road in Bijiang District of Tongren City was set up as Jinjiang street, (tongfuhan [2019] No. 56) was renamed Tongxing street in November. (TFH [2019] No. 147)

In November 2019, Shizhong street of Bijiang district was renamed Jinjiang street. (TFH [2019] No. 147)

In November 2019, according to the reply of Guizhou Provincial People's Government on Approving the adjustment of some administrative divisions of Tongren City (QFH [2019] No. 146), it was agreed that Bijiang district should be divided into Zhengguang street. Zhengguang Street governs Zhengguang community, dajiaochong community, yuanhuatang Village (including four groups of Huatian, Antang, heiyanping and Zhengguang) and Bajiao village and sanzhai village in Tujia township of Dong and Miao Nationalities.

Current situation of regionalization

Bijiang district has seven streets, namely Jinjiang street, Hexi street, Huanbei street, Dengta street, Zhengguang street, Tongxing street and Chuandong street, three towns, namely Bahuang Town, Yangtou town and YUNCHANGPING Town, and five townships, namely talc Township, Heping Township, Wawu Township, tongmuping Township and liulongshan township.

geographical environment

Location context

Bijiang district is located in the northeast of Guizhou Province, the southeast of Tongren City, and the middle of Wuling mountains. It is adjacent to Wanshan District, Jiangkou County, Songtao Miao Autonomous County of Tongren City, and Fenghuang, Mayang, Zhijiang District of Hunan Province. It is between 108 ° 56'13 "- 109 ° 28'20" east longitude and 27 ° 32'18 "- 27 ° 52'40" north latitude, with a total area of 1012 square kilometers.

geological structure

The Bijiang area belongs to the eastern margin of the complex deformation area of Guiyang in the Yangtze paraplatform and the west side of the South China fold belt in the early Wuling mountains in Western Hunan. In the west of Chuandong Tongren Chadian line, it belongs to the northeast section of Guiyang complex deformation area of Yangtze paraplatform, and in the East, it belongs to the Western transition zone of South China fold fault orogenic belt. The main fold structures in the area include Tongren compound syncline, Wawu ecliptic anticline, migongshan syncline, etc. the NE trending Tongren Chuandong Chadian fault controls the changes of sedimentary facies and different structural divisions in the area. The main exposed strata in the area are the middle upper Cambrian Loushanguan group (∈ 2-3ls) and Quaternary (q). The stratigraphic characteristics from old to new are as follows:

The middle upper Cambrian Loushanguan group (∈ 2-3ls): the lithology is gray white thick bedded massive crystalline dolomite, gray bedded dolomite and dolomitic limestone, about 1050m thick.

Quaternary (q): residual slope, alluvial proluvial clay, loam, gravel, etc. It is about 0-34 meters thick.

topographic features

Bijiang district is located in the eastern edge of Yunnan Guizhou Plateau, the hinterland of Wuling mountains, and the slope zone of transition to Xiangxi low mountains and hills in Hunan Province. The main peak of Liulong mountain is 1063 meters above sea level, the lowest point of Jinjiang outlet (Yangtou) is 205 meters above sea level, the general elevation is 400-800 meters, and the relative elevation difference is 300-400 meters. In the region, 67.8% of the population is mountainous, 28.2% is hilly, and 4% is basin (Bazi) and valley.

Climatic characteristics

Bijiang district has a humid monsoon climate in the middle subtropical zone, with four distinct seasons, abundant heat, abundant rainfall, sufficient light, loose and fertile soil, and complex and diverse soil types. The annual average temperature is 16.9 ℃, the annual frost free period is 291 days, the annual rainfall is 1250-1400mm, and the annual sunshine is 1171 hours.

Water system hydrology

The rivers in Bijiang district are divided into Jinjiang River and cheba River, both of which belong to the Yangtze River Basin. There are 22 main rivers with a drainage area of more than 20 square kilometers and a length of more than 10 kilometers, with a total length of 447.3 kilometers. There are nine primary tributaries of Jinjiang River Basin in Bijiang District, including Yanjing River, Xiaojiang River, Xieqiao River, sanzhai River, Mayan River, Guanzhuang River, Bukou River, Shizhu River and Wawu River; seven secondary tributaries are deshengtun River, Tianshengqiao River, wengman River, wengkeng River, Longdong River, Xitou River and Nanping river. Cheba river has a drainage area of 236 square kilometers in the territory. Its first level tributaries are cheba River; its second level tributaries are Yangzhai River and Liuma River; its third level tributaries are Longmen River; and its fourth level tributaries are Baiyan river.

surface water

Jinjiang River is the upper source of chenshui, a tributary of Yuanjiang River. It is the largest surface river in Bijiang District, with a drainage area of 4157 square kilometers, including 4068 square kilometers in Guizhou Province and 88.7 square kilometers in Hunan Province. Jinjiang River originates from the southern foot of Fanjing Shanxi. The source section is called Baxi river. The section from Minxiao to Jiangkou is called Minxiao river. The section from Jiangkou to Tongren is called Dajiang river. After the confluence of Tongren Chengguan and Xiaojiang, the section from Yangtou exit is called Jinjiang River. Its total length is 158km, with a drop of 1495m and a gradient of 9.5%; the average annual discharge is 112.0 m3 / s, the annual discharge in dry season is 71 m3 / s, the monthly average discharge in dry season is 24.6 m3 / s, and the water level changes 3-10m.

groundwater

According to the stratum lithology, water bearing medium characteristics and groundwater dynamic conditions, the regional groundwater can be divided into carbonate karst water and loose rock pore water.

Water bearing rock group and water rich property

Carbonate karst water: it occurs in the dissolution fissures and caverns of dolomite and dolomitic limestone in the middle and Upper Cambrian Loushanguan group (∈ 2-3ls), containing cave fissure water with strong water abundance. According to the regional hydrogeological survey data, the runoff modulus of groundwater in Loushanguan group is 2.34-8.63 L / s · km2, the unit water inflow of borehole is 0.55 L / s · m, the hydrochemical type is HCO < sub > 3 < / sub > - Ca water, and the salinity is less than 0.1 g / L.

Loose rock pore water: it occurs in residual slope, alluvial proluvial clay, loam, sand gravel, etc., and contains very weak pore water, which has no significance for water supply.

Recharge, runoff and discharge conditions of groundwater: regional groundwater is mainly supplied by infiltration of atmospheric precipitation