Changjiang Li Autonomous County, a county-level administrative region directly under the central government of Hainan Province

Changjiang Li Autonomous County, an autonomous county directly under the central government of Hainan Province, is located between 18 ° 53 'to 19 ° 30' north latitude and 108 ° 38 'to 109 ° 17' east longitude. It is located in the west of Hainan Island, with a total area of 1569 square kilometers. It governs 7 towns and 1 township. It is adjacent to Baisha Li Autonomous County in the East, Ledong Li Autonomous County in the south, Dongfang City in the southwest, Changhua River in the northwest, Beibu Gulf in the Northwest, and Danzhou City in the northeast. In the urban agglomeration around Beibu Gulf, the northeast is 180 kilometers away from Haikou City, the provincial capital, and the southeast is 190 kilometers away from Sanya City. In 2019, there will be 236100 permanent residents in Changjiang Li Autonomous County.

Changjiang Li Autonomous County is high in the southeast and low in the northwest, with highways extending in all directions, Haiyu west line highway, Huandao Expressway and Guangdong Hainan railway running through the whole territory, and complete water conservancy, electric power, communication and other infrastructure. Changjiang is a typical tropical monsoon climate zone with abundant sunshine. Has won the national quality mango base county and other honorary titles. It is a pilot county of national intellectual property project.

In 2019, the county's GDP will reach 12.632 billion yuan, with a year-on-year growth of 3.5% at comparable prices.

Historical evolution

Changjiang County is one of the earliest counties in Hainan Island.

Tang Yu, the South Cross.

In Xia, Shang and Zhou dynasties, he was a southern descendant of Yangyue.

Qin, as the county outside the fire.

In the first year of Yuanfeng in the Western Han Dynasty (110 BC), it was set up in Laixian county (including today's Dongfang City), under the jurisdiction of daner county.

In the reign of Liang Datong (535-545), daner county was abandoned and Yazhou was established. The county was under the jurisdiction of Yazhou.

In the third year of Daye of Sui Dynasty (607), Yazhou was changed into zhuya County, and Linzhen county was set up in the southwest. Yilun County, Changhua County and Ji'an County were set up in the Han Dynasty. Changhua County and Ji'an County were set up in this county. Yilun and Ji'an belong to zhuya County, Changhua to Linzhen county.

In 618, the first year of Wude in Tang Dynasty, Danzhou was set up to govern Yilun and lead Changhua. At the same time, Ji'an was saved to enter Changhua. In the first year of Zhenguan (627), Changhua County was restored to Ji'an County, which was under the jurisdiction of Lingnan road. In the first year of Tianbao (742), Danzhou was changed into Changhua County. In the first year of Qianyuan Dynasty (758), Danzhou was restored to Changhua County, Luochang county was abolished from Ji'an County, and Changhua County was still under the jurisdiction of Danzhou.

Five Dynasties, Danzhou.

In the sixth year of Xining (1073), Danzhou was changed into Changhua army, and Changhua and Thanksgiving counties were abandoned as Tengqiao Town, which was subordinate to Qiongguan pacification department. In 1080, Changhua County was restored, under the jurisdiction of Changhua army.

In 1131, the first year of Shaoxing in the Southern Song Dynasty, Changhua army was abolished as Yilun County, which was under the jurisdiction of Qiongzhou. In 1145, Changhua army was restored, and Changhua County was under the jurisdiction of Changhua army. In 1235, Changhua army was changed into Nanning army, and Changhua County was under the jurisdiction of Nanning army.

In the first year of Hongwu in Ming Dynasty (1368), the army was abolished and restored to Danzhou.

In the early Qing Dynasty, Changhua County was still Danzhou. In 1905, shengyazhou was Zhili Prefecture of Guangdong Province, and Changhua was under the jurisdiction of Yazhou.

In 1914, Changhua county changed its name to Changjiang County, which is under the jurisdiction of Guangdong Province.

In December 1949, Changjiang County and Thanksgiving County merged into Changgan county.

In December 1958, Dongfang County was established and Changgan county was incorporated into Dongfang County.

In December 1958, Changgan County, Baisha County and Dongfang County were merged into Dongfang County, which was under the jurisdiction of Hainan Li and Miao Autonomous Prefecture.

In June 1961, Dongfang County was divided into Dongfang County, Baisha County and Changjiang County, and the newly established Changjiang County was subordinate to Hainan Li and Miao Autonomous Prefecture.

On December 20, 1987, the organizational system of Hainan Li and Miao Autonomous Prefecture was abolished, and Changjiang County was renamed as Changjiang Li Autonomous County.

On April 13, 1988, Hainan was established as a province, and the county was changed into a province directly under the central government.

administrative division

Division evolution

In 1987, in addition to Shilu Town, the district system was changed to township system. Among the 11 district offices, qicha, Baoping, Changcheng and Wangxia were changed to townships, while Haiwei, Wulie, Chahe, shiyutian, nanluo, Changhua and taipo were changed to townships. Each township of Changjiang Li Autonomous County has one sub district office, 23 residents' committees and 71 villagers' committees.

In July 2002, the administrative divisions of towns in Changjiang Li Autonomous County were adjusted and merged, and 12 towns were adjusted and merged into 7 towns. That is to say, taipo town is merged into Shilu Town, Baoping town is merged into shiyutian Town, Wangxia town is merged into qicha Town, qicha town is set up, nanluo town is merged into Haiwei Town, Changcheng Town is merged into Changhua Town, and Wulie and Chahe towns remain unchanged. In addition to the original Baoping Township Hongyang village committee under the jurisdiction of Chahe Town, the original shiyutian town shanzhugou village committee under the jurisdiction of Shilu Town, the rest of the village committee area remains unchanged with the original township. In October 2006, qicha town was divided into qicha town and wangxiaxiang town.

Zoning details

At the end of 2011, the county has jurisdiction over 7 towns: Shilu Town, Chahe Town, shijitian Town, Wuli Town, Changhua Town, Haiwei town and qicha Town, 1 township: Wangxia Township, 8 township level administrative regions, 11 communities, 73 villages and 179 natural villages, 20 community resident groups and 602 villager groups. The county government is located in Shilu town.

geographical environment

Location context

Changjiang Li Autonomous County is located in the west northwest of Hainan Province. It spans 18 ° 53 '- 19 ° 30' n and 108 ° 38 '- 109 ° 17' E. It borders Baisha Li Autonomous County in the East, Ledong Li Autonomous County in the south, Dongfang City in the southwest, Changhua River in the northwest, Beibu Gulf in the northwest and Danzhou City in the northeast. The total land area of Changjiang is 1617 square kilometers.

topographic features

Changjiang Li Autonomous County is located in the northwest of Wuzhi Mountain, with complex topography. The terrain is high in the southeast and low in the northwest. From the northwest to the southeast, it rises step by step from plain terrace, terrace, hill and mountain. From 30 meters above sea level in the northwest to 1654 meters in the southeast, it forms the geographical environment of the northwest plain, the central platform and the southeast mountainous area. The north and south of the territory are respectively clamped by Changhua River and Zhubi River and injected into the sea. The maximum distance from east to west is 21.5 kilometers, and the maximum distance from north to south is 75 kilometers, covering a total area of 1617 square kilometers. Among them, land area is 1500 square kilometers, accounting for 92.8%; water area is 30.98 square kilometers, accounting for 1.92%. In addition, the sea area within 12 nautical miles is 866.7 square kilometers.

Changjiang Li Autonomous County belongs to the northwest division of Hainan Island stratigraphic area, with various strata. The exposed strata can be divided into four categories: Lower Paleozoic, Upper Paleozoic, Mesozoic and Cenozoic. There are coastal landforms, land landforms and water surface landforms. The landform is divided into six types: mountain, platform, hilly land, Valley (salt land), plain terrace and beach.

The mountains in Changjiang Li Autonomous County extend from southeast to northwest, with steep mountains in the southeast, overlapping mountains in the middle, hills in the West and plains in coastal areas, with an average altitude of 400-1000m. There are 57 peaks with an altitude of more than 300 meters in the territory, among which 24 peaks with an altitude of more than 1000 meters are zonghouling, yajialing, gouling, haorouling, Bawangling, gezhenling, erling, jiulinling, Yanwoling, huangniuling, daduanling, lunling and Bolun, all of which are concentrated in Wangxia and qicha mountain areas in the South and East. The peaks with an altitude of 600-1000 meters include baomeiling, Maling, jinniuling, shiluling, yuanhaoshan and Baxianshan, which are concentrated in qicha town and Shilu town. There are changhuadaling, Sanjialing, Jinjiling, egouling, lizhiling, jixinling and other peaks with an altitude of less than 500, scattered in Shilu, shijitian, Wulie, Changhua, Haiwei and other towns. The highest peak is located in Bawangling, 1655 meters above sea level, and the lowest point is located in Wuli Town, 348 meters above sea level.

soil

There are 10 soil types, 19 soil subclasses, 46 soil genera and 122 soil species in Changjiang Li Autonomous County. The main soil types are mountain yellow soil, latosolic red soil (also known as red soil), latosol, paddy soil and coastal sandy soil, which are suitable for agricultural development.

The northwest of Changjiang Li Autonomous County is close to Beibu Gulf, with a total coastline of 63.7 km. From Xiantian port in the south to Haitou port in Danzhou City in the north. The coast is tortuous, there are many bays, and the beach area is large. The total area of shallow sea beach is 4893 hectares, including 3779 hectares of tidal zone area and 1113.2 hectares of beach area. It is distributed in Xingang, Haiwei and Changhua harbors, with the largest beach area of 86.7 hectares in Haiwei town.

climate

Changjiang Li Autonomous County has a tropical monsoon marine climate, which is characterized by an obvious continental island climate, abundant sunshine and abundant heat. The annual average temperature is 24.1-25.1 ° C, the average temperature in January is 18.8 ° C, and the extreme minimum temperature is 2.8 ° C (December 11-23, 1975); the average temperature in July is 28.1-29.5'c, and the extreme maximum temperature is 39.5 ° C (June 27, 1977). The lowest monthly mean temperature was 17.1c (1967) and the highest was 25.5c (1987). The average annual temperature range is 8.6-10.2 ° C, and the maximum daily temperature range is 21.5 ° C. The annual average growth period is 365 days, the annual average frost free period is 365 days, the longest is 366 days, the shortest is 365 days. The annual sunshine hours are 2000-2600 hours, and the annual total solar radiation is 128377 cal / cm2. The annual average precipitation is 1353.7mm, and the annual precipitation in most areas is between 1200-1700mm. There is more precipitation in the southeast mountainous areas and less precipitation in the western coastal areas. Average annual rainfall days

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