Tianjia'an District, Huainan City, Anhui Province

Tianjia'an District tianjia'an district belongs to Huainan City, Anhui Province. It is located in the east of Huainan City, adjacent to Datong District in the East, Xiejiaji District in the south, Bagong mountain area in the West and Panji District in the north. It is the main urban area and economic, cultural, educational and technological center of Huainan City. The administrative area is 255.7 square kilometers.

As of May 2020, the district has jurisdiction over 5 townships (Sanhe Town is entrusted to Huainan hi tech Development Zone), 9 streets, 86 communities and 28 administrative villages. By the end of 2019, the registered residence population was 589 thousand and the resident population was 631 thousand.

In 2019, tianjia'an district will achieve a GDP of 31.98 billion yuan, an increase of 7.6% (comparable price) over 2018, with a per capita GDP of 54676 yuan.

The famous scenic spots in Tianjiaan district are national AAAA scenic spot Yilonghu park.

Historical evolution

During the Xia and Shang Dynasties, Tianjiaan was a place of Huaiyi. In the Western Zhou Dynasty, tianjia'an was under the jurisdiction of the state; in the late spring and Autumn period, there were disputes among the vassals. In the 16th year of King Jing of Zhou Dynasty (529 BC), when Wu destroyed Zhou, tianjia'an belonged to Wu. In the 26th year of the first emperor of Qin Dynasty (221 BC), Qin unified the six states, and tianjia'an belonged to Jiujiang county (Shouchun county). In the fourth year of emperor Gaozu of the Han Dynasty (203 BC), Liu Bang granted yingbu the title of king of Huainan. He first established the state of Huainan, Du Liu (now Lu'an), and governed four counties, Jiujiang, Lujiang, Hengshan and Yuzhang. In the 11th year of Gaozu (196 BC), yingbu was sentenced to death, and Liu Chang was renamed king of Huainan, capital Shouchun (now Shouxian). In the Eastern Han Dynasty, tianjia'an was under the jurisdiction of Jiujiang county. During the Northern Wei Dynasty, the Northern Qi Dynasty, the Northern Zhou Dynasty and the Sui Dynasty, tianjia'an was restored to the jurisdiction of Huainan county. In the Tang Dynasty, Huainan road was established, and tianjia'an was under the jurisdiction of Shouzhou, Huainan road. Huainan road was established in the Northern Song Dynasty, and tianjia'an district was under the jurisdiction of Shouzhou, Huainan road. in Yuan Dynasty, tianjia'an was located in Anfeng Road, Zhongshu Province, north of the Yangtze River in Henan Province. In the Ming Dynasty, tianjia'an was under the jurisdiction of Fengyang Prefecture in Nanjing. in the early Qing Dynasty, tianjia'an belonged to Fengyang Prefecture, a province in the south of the Yangtze River. in the late Qing Dynasty, the territory was under the jurisdiction of the ten capitals and eleven maps of Huaiyuan County. In 1929, tianjia'an built a township and set up a township office. In 1932, the township was abandoned and the Baojia system was implemented. In 1945, the KMT reestablished its government and set up four municipal guarantors. He was liberated on January 18, 1949 and established the tianjia'an Public Security Committee. On February 5, 1949, Huaiyuan County was put under the jurisdiction of Huainan Coal Mining Special Administrative Region, and tianjia'an Town People's government was established. On November 24, 1949, the town was withdrawn and tianjia'an city was established, which was subordinate to the administrative office of Huainan mining area. On September 22, 1950, tianjia'an city was abolished and Huainan Municipal People's Government (county level) was established to restore the organizational system of tianjia'an town. on May 22, 1953, the town was removed and the district (section level) was built. On January 5, 1955, it was upgraded to a county-level district. On August 25, 1966, it was renamed Xiangyang District. On August 19, 1972, the original name of Tianjiaan district was restored. On September 27, 1980, the district Revolutionary Committee was abolished and the people's Government of tianjia'an district was established. In June 2004, seven townships in Changfeng County were under the jurisdiction of Huainan City, among which Sanhe Township, Cao'an town and Shiyuan Township were under the jurisdiction of tianjia'an district. in 2013, the three townships were entrusted by Xiejiaji district. In 2015, the trusteeship of Caoan town and Shiyuan township was cancelled, and Sanhe Town was trusteeship by Huainan high tech Development Zone.

administrative division

As of October 2019, Tianjiaan district has jurisdiction over four towns: Ancheng Town, Shungeng Town, Caoan town and Sanhe Town (entrusted to Huainan hi tech Development Zone), one township: Shiyuan Township, nine streets: Dongshan street, Quanshan street, Huaibin street, Xinhuai street, Gongyuan street, Tiandong street, Guoqing street, Longquan street and Chaoyang Street, with 28 villagers' committees and 86 communities Residents committee (excluding Sanhe Town).

geographical environment

Location context

Tianjiaan district is located between 32 ° 32 ′ 45 ″ - 32 ° 41 ′ 09 ″ N and 116 ° 54 ′ 12 ″ - 117 ° 03 ′ 02 ″ E. It is located in the southeast of Huainan City, on the South Bank of the middle reaches of Huaihe River and in the north and south of Shungeng mountain. It is adjacent to Datong District in the East, Changfeng County in Hefei City in the southeast, Shouxian County across Wabu Lake in the south, Xiejiaji District in the West, Huaihe River and Panji District in the north. The area is 14 km wide from east to west and 32.55 km long from north to south, with a total area of 256 square kilometers. Huainan City is the main urban area and economic, cultural, education, science and technology center.

topographic features

There are three types of terrain in tianjia'an District: hills, hills and bays, which are divided into two units: hills, valleys and plains. The hills in tianjia'an district are part of the Jianghuai hills. The discontinuous low hills rise from the east to the West. The hills are surrounded by a slope zone with a width of about 500m-1500m, a slope of about 10 ° and an altitude of about 40m-75m. The second terrace of flood and alluvial deposits is staggered below the slope zone with a width of 500m-2500m, an altitude of about 30m-40m and a slope of about 2 ° and below the second terrace to the north of Shungeng mountain is the Huaihe River The first terrace is 2500 m-3000 m wide and below 25 m above sea level, with gentle slope; below the first terrace is the high flood plain of the Huaihe River, 2000 m-3000 m wide and 17 m-20 m above sea level, below which is the riverside shoal of the Huaihe River.

hydrology

There are Laoyan reservoir, Quanshan reservoir, gunzhuang reservoir, Shijian Lake in tianjia'an District, and the Huaihe River in the north. Shijian lake, located between Tianjiaan district and Xiejiaji District, gathers the water from the mountains at the western end of Shungeng mountain system, connects with the lake formed in the coal mining subsidence area of xie'er coal mine, and connects with the Huaihe River by gengshihan. The catchment area of Shijian lake is 36.13 square kilometers, the control water level is 17.3-17.5 meters in flood season, and the corresponding water surface is 2.25 square kilometers; 17.8-18 meters in non flood season, and the corresponding water surface is 2.62 square kilometers.

climate

Tianjia'an district is located in the transition zone between subtropical monsoon climate and warm temperate monsoon climate. The main climate characteristics are: changeable spring temperature, concentrated summer rain, crisp autumn, dry and cold winter, significant monsoon and four distinct seasons. spring (March to May). The cold air force is gradually weakening, and the warm air force is constantly increasing. The temperature rises quickly and the rain increases. Generally, there is a cold air process in 4-6 days, so the weather is changeable, sometimes cloudy and sometimes sunny. There are often spring cold, gale, hail, cold wave cooling and late frost and other disastrous weather. In the year with more spring rain, the crops are easy to be damaged by water. Summer (June to August). High temperature and rainy, easy to drought and waterlogging, prevailing southeast wind. The rainy season begins around the middle of June, with concentrated precipitation and strong momentum. Generally, the rainy season ends in the first and middle of July, which is controlled by the subtropical high. The weather is sunny and hot, and there are often summer droughts. When the rainy season comes early, it poses a serious threat to the noon harvest; when the rainy season ends early, there will be continuous high temperature and drought; in some years, there will be both drought and flood, first flood and then drought. autumn (September to November). The influence of subtropical high decreased and the northern cold high increased gradually. With the invasion of cold air again and again, the temperature decreased rapidly, and the rain decreased. There are many sunny days in autumn, but sometimes the phenomenon of continuous autumn rain occurs. winter (December to February). Controlled by the cold high pressure in Mongolia, the wind is mainly from northeast to north. Low temperature, less precipitation and more sunny days. Blizzard occasionally.

natural resources

Power resources

Tianjiaan power plant, formerly known as Huainan Power Plant, was built in October 1941. Its predecessor was Xiayao power station, which was built for mining Huainan coal resources. Huainan Tianjiaan power plant has two 300MW cogeneration units with a total installed capacity of 600MW. The power generated is supplied to East China power grid.

mineral resources

The limestone in Tianjiaan district is widely distributed and of good quality. The content of calcium oxide (CAO), the main beneficial component, is generally about 50%, while the content of magnesium oxide (MgO), the harmful component, is generally less than 3%. Ore bodies are mainly distributed from Dongshan to the west of jinjialing in Tianjiaan district. The orebodies are layered and the surface outcrops are banded. Most of the ore bearing strata are uplifted mountains, and a considerable part of them are exposed along the mountains. The stripping ratio of the deposit is small and the drainage is convenient. Most of the deposits are suitable for open-pit mining. The geological work of limestone deposits in Huainan area is relatively low. Most of them are general survey, and some are only exploration.

animal

Wild mammals: Wolf, wild boar, hare, fox, hedgehog, badger, weasel, vole, house mouse, striped mouse, civet, mink and bat. Wild birds: magpie, grey magpie, turtledove, owl, Shrike, eagle, mallard, mandarin duck, swan, goose, quail, pheasant, roe deer, swallow, swallow, lark, thrush, tit, sparrow, oriole, kingfisher, egret, stork, crane, etc. wild fish: more than 40 species, including carp, silver carp, bream, black carp, mullet, grass carp, catfish, crucian carp, Wang fish, Huangjian, Malang, willow fish, mandarin fish, eel, river eel, loach, knife loach, silver carp, etc. Reptiles: turtle, turtle, water snake, earth snake, spotted snake, lizard, gecko, etc. Amphibians: frogs, toads, salamanders, etc. invertebrates: arthropods include: grass shrimp, crab, crayfish, spider, centipede, scorpion, scorpion, etc., among which there are many kinds of insects, such as butterfly, dragonfly, mantis, cicada, bee, wasp, locust, cricket, firefly, ant, mole cricket, cockroach, grasshopper, scarab, Eupolyphaga, etc. Molluscs are: mussels, snails, snails. Other common are earthworms, leeches and so on.

Botany

The vegetation in tianjia'an district belongs to the transitional type from subtropical to warm temperate zone, mainly deciduous broad-leaved forest. broad leaved tree species: Quercus acutissima, Quercus variabilis, Pistacia chinensis, Sophora japonica, Robinia pseudoacacia, Pterocarya stenoptera, Paulownia fortunei