Chengmai County

Chengmai County (postal: Tsingmai; simplified Chinese: 澄迈县; traditional Chinese: 澄邁縣; pinyin: Chéngmài Xiàn) is a county in Hainan, China. It is one of four counties of Hainan. Its postal code is 571900. In 2002, its population was 490,800.[2]

Chengmai
澄迈县
County
Chengmai is located in Hainan
Chengmai
Chengmai
Location in Hainan
Coordinates: 19°45′7″N 110°0′57″E
CountryPeople's Republic of China
ProvinceHainan
Area
 • Total2,067.6 km2 (798.3 sq mi)
Population
 (2012)
 • Total565,000[1]
Time zoneUTC+8 (China standard time)

History

The first record of Chengmai County is in 110 BC, when it referred to as Guo County in one of Emperor Wu of Han's records. The county acquired its current name under the Sui dynasty reorganisation of 607. It was also recorded during the Ming dynasty.

Geography
Chengmai (labelled as CH'ENG-MAI 澄邁) (1962)

Located in northwest Hainan, it is 56 km (35 mi) wide (east to west) and 70 km (43 mi) long (north to south). It has a total land area of 2,067.6 km2 (798.3 sq mi). Climate-wise, it is tropical with ample sunshine and moderate rainfall all year round; on average, the county receives 2060.5 hours of sunshine and 1,756 mm (69.1 in) of rain each year. The average annual temperature is 23.7 °C (74.7 °F).[3]

With a total land area of 206.7 km2 (79.8 sq mi), melons and other tropical crops are grown around the county.

More than 20 rivers flow through the county, providing 17.4×10^9 m3 (610×10^9 cu ft) of water per year.

Jinjiang Town
Jinjiang viewed from the south side of the Nandu River

The main settlement in the county is Jinjiang. It is located directly on the north side of the Nandu River and essentially occupies the south face of a large hill. The old section is located by the river with newer buildings further up. The backside of the hill is currently under development with mostly high-rise apartments being built. Many government buildings are situated on the top of the hill. Near the centre of the hill, there is a large park.

Climate
Climate data for Chengmai (1991–2020 normals, extremes 1981–2010)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 34.0
(93.2)		 37.9
(100.2)		 40.4
(104.7)		 39.6
(103.3)		 41.1
(106.0)		 39.4
(102.9)		 38.6
(101.5)		 38.2
(100.8)		 36.8
(98.2)		 34.3
(93.7)		 35.9
(96.6)		 32.0
(89.6)		 41.1
(106.0)
Average high °C (°F) 22.8
(73.0)		 24.8
(76.6)		 28.5
(83.3)		 31.7
(89.1)		 33.6
(92.5)		 34.4
(93.9)		 34.2
(93.6)		 33.3
(91.9)		 31.8
(89.2)		 29.8
(85.6)		 27.2
(81.0)		 23.5
(74.3)		 29.6
(85.3)
Daily mean °C (°F) 18.0
(64.4)		 19.5
(67.1)		 22.6
(72.7)		 25.8
(78.4)		 27.7
(81.9)		 28.6
(83.5)		 28.5
(83.3)		 27.9
(82.2)		 26.8
(80.2)		 24.8
(76.6)		 22.3
(72.1)		 19.0
(66.2)		 24.3
(75.7)
Average low °C (°F) 14.9
(58.8)		 16.2
(61.2)		 19.0
(66.2)		 21.9
(71.4)		 23.9
(75.0)		 24.8
(76.6)		 24.8
(76.6)		 24.7
(76.5)		 23.9
(75.0)		 21.7
(71.1)		 19.2
(66.6)		 15.9
(60.6)		 20.9
(69.6)
Record low °C (°F) 3.7
(38.7)		 5.6
(42.1)		 6.0
(42.8)		 14.1
(57.4)		 16.2
(61.2)		 19.7
(67.5)		 21.5
(70.7)		 21.3
(70.3)		 18.2
(64.8)		 12.7
(54.9)		 8.3
(46.9)		 2.0
(35.6)		 2.0
(35.6)
Average precipitation mm (inches) 21.2
(0.83)		 26.4
(1.04)		 41.1
(1.62)		 98.4
(3.87)		 237.8
(9.36)		 235.0
(9.25)		 270.2
(10.64)		 353.1
(13.90)		 290.7
(11.44)		 227.6
(8.96)		 51.7
(2.04)		 38.1
(1.50)		 1,891.3
(74.45)
Average precipitation days (≥ 0.1 mm) 9.4 8.6 9.3 11.8 17.7 17.3 17.4 19.0 16.6 11.4 8.6 8.7 155.8
Average relative humidity (%) 86 85 83 82 82 82 82 85 87 86 85 85 84
Mean monthly sunshine hours 91.4 95.1 128.2 153.1 187.4 193.1 206.1 182.9 146.2 140.0 110.8 85.8 1,720.1
Percent possible sunshine 27 29 34 40 46 49 51 46 40 39 33 25 38
Source: China Meteorological Administration[4][5]

Economy

The main industry is mining, with more than ten resources available within the county including quartz, stone, limestone, crystals, gold, silver, peat, zinc, aluminium, iron ore, kaolin, and manganese. Over 5 billion tonnes of quartz are still unmined in the county, with an average grade of 99.5% silicon. There are also nearly 11 million tonnes of limestone remaining in addition to crystal deposits 5.5 km (3.4 mi) long and 3 km (1.9 mi) wide and around 80,000,000 tonnes of kaolin.

Fish farms in Chengmai

Fishing also makes up a large part, with the county possessing 89.8 km (55.8 mi) of coastline. Apart from farm fishing, marine catches include mackerel, redfish, croaker fish, grouper, pomfret, tuna, squid, cuttlefish, lobster and shrimp, are fished in the harbour at Tu Beach. The diverse and populous fish are a result of a nutrient-rich sediment at the bottom of the harbour.

Demographics

The Han people account for 99.5% of the population of the county.

Longevity

The people of Chengmai County live to an average of 77.79 years. Among the population are 215 centenarians. The proportion of centenarians compared to the rest of the county's population, and the overall number, ranks highest of all cities and counties in China.[1][6]

Of the total 565,000 people living in the county, 18,500 are more than 80 years old, 896 of which are couples.[1][6]

See also

References

Citations
  1. "In Hainan's Chengmai county, age is not a problem". Chinadaily.com.cn. Retrieved 3 October 2017.
  2. "Chengmai County official website". Chengmai County People's Government. 2002. Archived from the original on 2008-05-17. Retrieved 2008-10-14.
  3. "Chengmai County official website". Chengmai County People's Government. 2001. Archived from the original on 2008-05-17. Retrieved 2008-10-14.
  4. 中国气象数据网 – WeatherBk Data (in Simplified Chinese). China Meteorological Administration. Retrieved 17 June 2023.
  5. 中国气象数据网 (in Simplified Chinese). China Meteorological Administration. Retrieved 17 June 2023.
  6. "Where longevity is longstanding". Chinadaily.com.cn. Retrieved 3 October 2017.

Sources
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19.752°N 110.016°E / 19.752; 110.016

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