| Variation features of precipitation and air temperature in lower reaches of Kaidu River Basin of Xinjiang during recent 50 years |
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| DOI：10.7606/j.issn.1000-7601.2013.03.41 |
| Key Words: precipitation air temperature change characteristics the lower reaches of Kaidu River Basin |
| Author Name | Affiliation | | LI Xinguo | School of Geographic Sciences and Tourism, Xinjiang Normal Uniuersity, Urumqi, Xinjiang 830054, China
Xinjiang laboratory of lake environment and resources in arid zone, Urumqi, Xinjiang 830054, China | | Asiyemu TUERDI | School of Geographic Sciences and Tourism, Xinjiang Normal Uniuersity, Urumqi, Xinjiang 830054, China
Xinjiang laboratory of lake environment and resources in arid zone, Urumqi, Xinjiang 830054, China | | LIU Bin | School of life Sciences, Xinjiang Normal University, Urumqi, Xinjiang 830054, China | | Hamid YIMIT | School of Geographic Sciences and Tourism, Xinjiang Normal Uniuersity, Urumqi, Xinjiang 830054, China
Xinjiang laboratory of lake environment and resources in arid zone, Urumqi, Xinjiang 830054, China |
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| Abstract: |
| Through the data of air temperature and precipitation from 1960 to 2009 at the three stations of Yanqi, Hejing, and Heshuo County, and using methods of linear fitting and Mann-Kendall test, seasonal and annual changes of air temperature and precipitation in lower reaches of Kaidu River Basin were
characterized in this study. The results indicated that:(1)Annual average temperature of these three counties showed an escalating trend. The linear fitting growth rates of these three counties are 0.366℃·10a-1,0.256℃·10a-1 and 0.033℃·10a-1. (2)Mean maximum tempera-ture and the mean minimum temperature of Yanqi
and Hejing County showed an ascending trend, while monthly
mean minimum temperature in Heshuo county showed a decreasing trend. As for as seasonal and annual temperature alterna-tions are concemned, seasonal temperature of all these three counties showed an increasing trend. Temperature increase in winter is significant. The inter-annual alternation extent of fall average temperature is at same range of inter-annual alter-nation of annual average temperature. (3)Annual precipitation anomalies of three counties appeared down-up-down trend. (4)Lapse rate was abnormal in three counties, and precipitation rate was abnormal in Yanqi county. Abrupt at-mospheric temperature change occurred frequently and all of them ocurred in the 1990s. |
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