Ya'an 雅安 |
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— Prefecture-level city — | |
雅安市 | |
A bridge with ancient Chinese architectural features, town centre of Ya'an | |
Location of Ya'an City jurisdiction (yellow) within Sichuan and the PRC | |
Coordinates: | |
Country | People's Republic of China |
Province | Sichuan |
Area | |
• Total | 15,300 km2 (5,907.4 sq mi) |
Elevation | 580 m (1,903 ft) |
Population | |
• Total | 1,530,000 |
• Density | 100/km2 (259/sq mi) |
Time zone | China Standard (UTC+8) |
Postal code | 625000 |
Area code(s) | 0835 |
Website | http://www.yaan.gov.cn/ |
Ya'an (Chinese: 雅安; pinyin: Yǎ'ān; Wade–Giles: Ya-an) is a prefecture-level city in the western part of Sichuan province of Southwest China, located just below the Tibetan Plateau.
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Previously known as Yazhou-fu, the city is first mentioned during the Zhou Dynasty (1122-255 BCE). It served as a county seat during the Qin and Han Dynasties, but was subsequently taken by nomadic tribes. After being reintegrated into the Chinese Empire in the late 5th century, it was made the seat of the Ya Prefecture in 604. The modern Ya'an county was established in 1912. It became the provincial capital of Xikang province in 1951, but has been a municipality under the administration of Sichuan province since 1955, when Xikang province was merged and became a part of Sichuan province.
The first giant panda was found in Baoxing County of Ya'an; Ya'an is also the origin of Artificial planting tea of the world; Mengding Mountain in Mingshan County, has been keeping seven tea trees, which are believed to be the origins of tea, for more than 1,000 years.
Ya'an is located at the western edge of the Sichuan Basin and on the upper reaches of the Yangtze, covering the transition between the Chengdu Plain and the Tibetan Plateau. Its latitude ranges from 28° 51′ 10″ — 30° 56′ 40″ N and its longitude from 101° 56′ 26″—103° 23′ 28″ E. Neighbouring prefectures are, starting from the northeast and moving counter-clockwise, Chengdu (NE), Meishan (E), Leshan (SE), Liangshan Yi Autonomous Prefecture (S), Garzê Tibetan Autonomous Prefecture (W), and Ngawa Tibetan and Qiang Autonomous Prefecture (N). With an area of 15,300 square kilometres (5,910 sq mi) and a population of 1,530,000, [3] The city is encircled by mountains, and four rivers flow through it.
Ya'an has a monsoon-influenced humid subtropical climate (Köppen Cwa) and is largely mild and humid. The presence of the mountains to the northwest greatly affects the city's climate. In the short winters, they help shield the city from cold Siberian winds. January averages 6.3 °C (43.3 °F), and while frost may occur, snow is rare. Summers are hot and humid, with highs often reaching 30 °C (86 °F), yet extended heat waves, as can be seen in eastern and central China, are rare; the daily average in July and August is around 25 °C (77 °F). Rainfall is common year-round, though in winter it tends to be light, and is particularly heavy in summer, when warm, humid southerly or southeasterly winds blow against the mountains, causing orographic lift to occur, enhancing rainfall. With nearly 1,700 millimetres (67 in) of rainfall occurring on 213 days per year, Ya'an is also known as the "Rain City".[4] In addition, rain often falls at night, so fog is not a common occurrence.
Climate data for Ya'an (1971−2000) | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Average high °C (°F) | 9.4 (48.9) |
11.1 (52.0) |
15.6 (60.1) |
21.5 (70.7) |
25.5 (77.9) |
27.7 (81.9) |
29.6 (85.3) |
29.6 (85.3) |
24.9 (76.8) |
20.1 (68.2) |
15.5 (59.9) |
10.8 (51.4) |
20.1 (68.2) |
Average low °C (°F) | 4.1 (39.4) |
5.5 (41.9) |
8.8 (47.8) |
13.5 (56.3) |
17.5 (63.5) |
20.2 (68.4) |
22.0 (71.6) |
21.9 (71.4) |
18.5 (65.3) |
14.5 (58.1) |
10.3 (50.5) |
5.8 (42.4) |
13.6 (56.5) |
Precipitation mm (inches) | 20.8 (0.819) |
31.9 (1.256) |
50.9 (2.004) |
93.0 (3.661) |
129.4 (5.094) |
181.0 (7.126) |
369.6 (14.551) |
433.6 (17.071) |
206.6 (8.134) |
98.3 (3.87) |
56.5 (2.224) |
20.9 (0.823) |
1,692.5 (66.634) |
Avg. precipitation days (≥ 0.1 mm) | 13.3 | 16.1 | 18.6 | 17.8 | 19.1 | 19.3 | 20.1 | 18.8 | 20.8 | 20.4 | 16.3 | 12.6 | 213.2 |
Source: Weather.com.cn[4] |
Map | # | Name | Hanzi | Hanyu Pinyin | Population (2004 est.) | Area (km²) | Density (/km²) |
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1 | Yucheng District | 雨城区 | Yǔchéng Qū | 340,000 | 1,060 | 321 | |
2 | Mingshan County | 名山县 | Míngshān Xiàn | 260,000 | 614 | 423 | |
3 | Yingjing County | 荥经县 | Yíngjīng Xiàn | 140,000 | 1,781 | 79 | |
4 | Hanyuan County | 汉源县 | Hànyuán Xiàn | 350,000 | 2,349 | 149 | |
5 | Shimian County | 石棉县 | Shímián Xiàn | 120,000 | 2,678 | 45 | |
6 | Tianquan County | 天全县 | Tiānquán Xiàn | 150,000 | 2,394 | 63 | |
7 | Lushan County | 芦山县 | Lúshān Xiàn | 120,000 | 1,364 | 88 | |
8 | Baoxing County | 宝兴县 | Bǎoxīng Xiàn | 60,000 | 3,114 | 19 |
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