Chengmai
澄迈县 | |
|---|---|
 | |
  Chengmai Location in Hainan | |
| Coordinates: 19°45′7″N 110°0′57″E / 19.75194°N 110.01583°E / 19.75194; 110.01583 | |
| Country | China |
| Province | Hainan |
| Area | |
• Total | 2,067.6 km2 (798.3 sq mi) |
| Population (2012)[1] | |
• Total | 565,000 |
| • Density | 273/km2 (708/sq mi) |
| Time zone | UTC+8 (China standard time) |
Chengmai County (Chinese: 澄迈县; 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]
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
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
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
Chengmai a tropical wet and dry climate (Köppen Aw), bordering a tropical monsoon climate (Köppen Am).
| Climate data for Chengmai, elevation 31 m (102 ft), (1991–2020 normals, extremes 1967–present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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) |
42.0 (107.6) |
41.1 (106.0) |
41.1 (106.0) |
38.6 (101.5) |
38.2 (100.8) |
37.0 (98.6) |
34.3 (93.7) |
35.9 (96.6) |
32.0 (89.6) |
42.0 (107.6) |
| Mean daily maximum °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) |
| Mean daily minimum °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) | 1.1 (34.0) |
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) |
1.1 (34.0) |
| 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 |
| Percentage possible sunshine | 27 | 29 | 34 | 40 | 46 | 49 | 51 | 46 | 40 | 39 | 33 | 25 | 38 |
| Source: China Meteorological Administration[4][5] all-time extreme temperature[6][7]all-time March, April, May and June (Provincial Record High for June) highs[8][9] | |||||||||||||
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.
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][10]
Of the total 565,000 people living in the county, 18,500 are more than 80 years old, 896 of which are couples.[1][10]
See also
References
Citations
- "In Hainan's Chengmai county, age is not a problem". Chinadaily.com.cn. Retrieved 3 October 2017.
- "Chengmai County official website". Chengmai County People's Government. 2002. Archived from the original on 2008-05-17. Retrieved 2008-10-14.
- "Chengmai County official website". Chengmai County People's Government. 2001. Archived from the original on 2008-05-17. Retrieved 2008-10-14.
- 中国气象数据网 – WeatherBk Data (in Simplified Chinese). China Meteorological Administration. Retrieved 17 June 2023.
- "Experience Template" 中国气象数据网 (in Simplified Chinese). China Meteorological Administration. Retrieved 17 June 2023.
- "Extreme Temperatures Around the World". Retrieved 2024-09-15.
- ""海南是否会下雪？"官方回应海拔较高山顶可能结霜" (in Simplified Chinese). 中国新闻社. Retrieved 30 December 2025.
- "Sina Visitor System" 【海南澄迈连续40℃破纪录】今天午后澄迈气温再次冲上40℃，从4月6日-9日，连续4天上40℃，打破了当地观测史连续40℃日数的最长纪录（原纪录为3天，2020年5月6-8日）。而且未来澄迈可能还会达到40℃以上，纪录还会不断刷新。况。 (in Simplified Chinese). weatherman_信欣 on Weibo. Retrieved 9 April 2026.
- "Sina Visitor System" 【高温盘点】今天海南、新疆站点包揽高温榜前十。海南澄迈41.1℃，破6月最高纪录；定安40.1℃破观测史最高气温纪录。今年截至6月24日，澄迈高温日数有63天，为全国高温日数最多的国家级气象站，并且也是大幅超常年同期，为同期第一多。此外屯昌47天、定安43天，也是同期高温日数最多。 省会首府直辖市中，海口有37天高温，排名第一。明天海南的高温依然很强，最高气温极端指数，部分地区超0.9。但因为最近不断刷新纪录，未来再破纪录的难度加大。预计26-27日海南的热度会下降，最高气温的极端指数，也没有那么高了。从很热变成比较热。 (in Simplified Chinese). weatherman_信欣 on Weibo. Retrieved 24 June 2026.
{{cite web}}: line feed character in|script-title=at position 145 (help) - "Where longevity is longstanding". Chinadaily.com.cn. Retrieved 3 October 2017.
Sources
- CHGIS. "Other Historical Datasets". People.fas.harvard.edu. Retrieved 3 October 2017.
External links
19°45′07″N 110°00′58″E / 19.752°N 110.016°E / 19.752; 110.016