[1]HAN Xue-yun,YANG Qing,YAO Jun-qiang.Spatiotemporal Distribution Characteristics of Precipitation in Tianshan Mountain of Xinjiang during the Last 51 Years[J].Research of Soil and Water Conservation,2013,20(02):139-144.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 02
Page number:
139-144
Column:
Public date:
2013-04-28
- Title:
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Spatiotemporal Distribution Characteristics of Precipitation in Tianshan Mountain of Xinjiang during the Last 51 Years
- Author(s):
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HAN Xue-yun1,2, YANG Qing2, YAO Jun-qiang3
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1. Institute of Geographic Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;
2. Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China;
3. College of Resources and Environment, Xinjiang University, Urumqi 830046, China
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- Keywords:
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Tianshan Mountain; precipitation; climate trend rate; precipitation mutations; precipitation cycle
- CLC:
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P468.0+24
- DOI:
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- Abstract:
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Based on the precipitation data obtained from 11 stations in Tianshan Mountain during 1959—2009, spatio-temporal distribution characteristics of precipitation were analyzed by using accumulative anomaly, regression analysis, EOF(empirical orthogonal function decomposition), Mann-Kendall(M-K)inspection, MESA(maximum entropy method) methods. Results showed that: the precipitation in the mountain presented upward tendency (the climate trend rate was 1.134 mm/a). The increase of precipitation was most obvious in 1990s and the first decade of 21st century, relative humidity increased gradually. The change of annual precipitation had consistency strengthened, precipitation of climate trend rate had very strong regional features, which was characterized as that central and southern of Tianshan mountain precipitation trend were greater than the west. Spatial distribution of precipitation was mainly controlled by mountainous consistent type and east-west anti-phase phenomenon. Precipitation mutations in mountainous area occurred in 1992, 1978 and 2006, the three principal parts showed as 2.1 years, 2.8 years, 2.6 years and 5.6 year in cycle, respectively, under the confidence probability of 95%. Annual Precipitation in the mountains and winter had no significant change, but precipitation increased with the rise of altitude in summer.