Zayu County

History

During the period of the Tibetan Empire, a government office was set up here. In 1371, the Phagmodrupa dynasty established the Kemai Zong. In 1912, Kemai County was established, and the county seat was moved to Gyigang (skyid sgang), which was under the jurisdiction of the Governor of Domai of Tibet. In 1954, it was assigned to Qamdo Prefecture (昌都专区), and in 1960, it was changed to Sangngak Cho County (gsang sngag chos rdzong, 桑昂曲县). In May 1966, it was renamed as Zayu County. The county seat was located in Zhowagoin Town, and it was under the jurisdiction of the prefecture-level Qamdo Region (昌都地区). In 1986, it was assigned to Nyingchi Prefecture.

Geography

Zayul County is located in an area of highly varying topography, lying just south of the Tibetan Plateau in the mountainous region east of the Himalayas where the Transhimalayas transition to the Hengduan Mountains. Specifically, the county straddles the southern parts of the Baxoila Range, the eastern parts of the Kangri Karpo mountains, and the eastern parts of the Mishmi Hills. Elevations generally decrease from northwest to southeast, with a maximal variation of 3600 m: in the county, including Arunachal Pradesh areas near the southern border have an elevation of 1400 m, while there are 10 peaks over 5000 m, the highest being Kawagarbo in the Meili Xue Shan at 6740 m. The county has an average elevation of 2300 m. The primary rivers are the Zayul River through the central parts of the county and Nu River (Salween) in the east.

The county has an area of 31305 km2. Besides India, Burma, and Yunnan, it borders Zogang County to the north and Mêdog County to the southwest.

Economy

In 2020, the GDP of Zayu County is 1.144 billion yuan, and the arable land area is . The main agricultural products are barley, wheat, rice, corn, soybean, eggplant, cucumber, pepper, rapeseed, peanut, sugar cane, tomato, mandarin orange and orange. Raising pigs, cattle, cattle, sheep, goats, etc. in animal husbandry. Economic forests include spruce, nanmu, fir, birch, sandalwood, camphor, Yunnan pine, Huashan pine, yew, spring bud wood, etc. In 1959, the Rancha Highway connected with the Sichuan-Tibet Highway was built.

Population

According to China's seventh national census in 2020, Zayu County's permanent population was 28,237, including 14,900 males, 13,337 females, 6,459 aged 0–14, 19,235 aged 15–59, 2,543 aged 60 and over, and 22,105 Tibetans. There are 3593 Han people, 1573 Teng people and 966 other ethnic minorities. The urban population is 6,221, and the rural population is 22,016. There are 7,787 people in Zhuwagen Township, 3,544 people in Upper Chayu Township, 6,213 people in Lower Zayu Township, 6,158 people in Chawalong Township, 1,915 people in Gula Township, and 2,620 people in Guyu Township.

Climate

Owing to its moderate elevation (for Tibet), Zayul County has a subtropical highland climate (Köppen Cwb), a rarity in Tibet, with mild and quite dry winters, and warm, rainy summers. The rainy season lasts from March to September, and June through August each average more than 20 days of rainfall per month. The monthly daily average temperature ranges from 4.7 °C in January to 19 °C in July, and the annual mean is 12.1 °C. The frost-free period is 280 days annually. Here, the diurnal temperature range is not large, maxing out at 16.8 C-change in November. Its climate is well-suited to support a variety of agricultural and forestry products.

|Jan record high C = 21.7 |Feb record high C = 22.0 |Mar record high C = 26.7 |Apr record high C = 28.9 |May record high C = 30.2 |Jun record high C = 32.3 |Jul record high C = 32.6 |Aug record high C = 31.1 |Sep record high C = 31.5 |Oct record high C = 29.5 |Nov record high C = 22.8 |Dec record high C = 19.8

|Jan record low C = −5.5 |Feb record low C = -5.0 |Mar record low C = −2.4 |Apr record low C = −0.2 |May record low C = 2.5 |Jun record low C = 8.0 |Jul record low C = 9.5 |Aug record low C = 8.5 |Sep record low C = 6.0 |Oct record low C = 0.9 |Nov record low C = −2.9 |Dec record low C = −4.4

Environment

The central parts of Zayul County contain a large isolated section of the Northeastern Himalayan subalpine conifer forests throughout the Zayul River valley and its tributaries. The highland areas of Zayul contain Eastern Himalayan alpine shrub and meadows. The eastern parts of the county are classified as Nujiang Langcang Gorge alpine conifer and mixed forests. There are, however, extremely dry areas within the Nu Valley in Zayul that support mostly succulents.

Gecko Hemiphyllodactylus zayuensis, named after Zayul, is only known from the county.

Administrative divisions

Zayul County has administration over three towns and three townships:

Sino-Indian border dispute

China claims the entire Arunachal Pradesh as being part of Tibet, especially the Walong region in the Zayul River valley below Rima. The area was one of the theatres of the 1962 Sino-Indian War.

Notes

References

Bibliography

References

1. (2021-06-17). "林芝市第七次全国人口普查主要数据公报". Government of Nyingchi.
2. {{harvp. Lamb, The McMahon Line, Vol. 2. 1966. Mehra, The McMahon Line and After. 1974
3. [https://www.thlib.org/reference/transliteration/wyconverter.php THL's Online Tibetan Transliteration Converter] {{Webarchive. link. (2022-08-31 and [https://www.thlib.org/reference/transliteration/phconverter.php THL's Online Tibetan Phonetics Converter] {{Webarchive). link. (2024-08-24 , invoked 31 August 2022.)
4. (1995). "中國歷史地名大辭典". 广东教育出版社.
5. "中国大百科全书".
6. "察隅县".
7. . (2006). "Atlas of China". *SinoMaps Press*.
8. "察隅县第七次全国人口普查主要数据公报".
9. link. [[China Meteorological Administration]]
10. link. Weather China
11. "Northeastern Himalayan subalpine conifer forests". Myers Enterprises II.
12. "Eastern Himalayan alpine shrub and meadows". Myers Enterprises II.
13. "Nujiang Langcang Gorge alpine conifer and mixed forests". Myers Enterprises II.
14. {{NRDB species
15. link
16. "汉藏对照工具书__西藏行政地名词典".