Dulan County (
Mongolian:; ; ) is a county of east-central
Qinghai
Qinghai (; alternately romanized as Tsinghai, Ch'inghai), also known as Kokonor, is a landlocked province in the northwest of the People's Republic of China. It is the fourth largest province of China by area and has the third smallest po ...
province, China. It is under the administration of
Haixi Mongol and Tibetan Autonomous Prefecture
Haixi Mongolian and Tibetan Autonomous Prefecture (; mn, á ¬á á ¶á ¢á °á ¢â€¯á ¶á ¢á ¨ á ®á £á ©á á £á ¯ á ²á ¥á ªá ¡á ³ á ¦á ¨á ³á ¦á °á ¦á ²á ¡á ¨â€¯á ¦ á ¥á ªá ¡á ·á ²á ¡á á ¡á ¨ á µá á °á á ¬á ¤ á µá §á ¦; bo, མཚོ་ནུབ་འ...
.
Climate
With an elevation of around , Dulan County has a
subalpine
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial f ...
semi-arid climate
A semi-arid climate, semi-desert climate, or steppe climate is a dry climate sub-type. It is located on regions that receive precipitation below potential evapotranspiration, but not as low as a desert climate. There are different kinds of semi-ar ...
(
Köppen Köppen is a German surname. Notable people with the surname include:
* Bernd Köppen (born 1951), German pianist and composer
* Carl Köppen (1833-1907), German military advisor in Meiji era Japan
* Edlef Köppen (1893–1939), German author and ...
''BSk''), with long, very cold and winters, and warm summers. Average low temperatures are below freezing from early/mid October to mid/late April; however, due to the wide
diurnal temperature variation
In meteorology, diurnal temperature variation is the variation between a high air temperature and a low temperature that occurs during the same day.
Temperature lag
Temperature lag is an important factor in diurnal temperature variation: peak d ...
, only December and January have an average high that is below freezing. With monthly percent possible sunshine ranging from 60% in July to 81% in November, the county seat is very sunny, receiving 3,092 hours of bright sunshine annually;
relative humidity
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present.
Humidity depe ...
in all months is below 50% and is for seven months below 40%. The monthly 24-hour average temperature ranges from in January to in July, while the annual mean is . Over 70% of the annual precipitation of is delivered from May to August.
Administrative Divisions
*
Reshui Township
Transport
*
China National Highway 109
China National Highway 109 connects Beijing with Lhasa. It runs westwards from Beijing via Datong, Yinchuan and Xining to Golmud before turning southwest to Lhasa. The portion of the highway from Xining to Lhasa is known as the Qinghai-Tibet Hi ...
References
External links
{{authority control
County-level divisions of Qinghai
Haixi Mongol and Tibetan Autonomous Prefecture