J4 ›› 2011, Vol. 29 ›› Issue (3): 297-301.

• 论文 • 上一篇    下一篇

若羌绿洲近55 a 气候变化基本特征

胡文峰1,2 ,何清2 ,金莉莉1,2赵聪敏1,2
  

  1.  1. 新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 ;
    2. 中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002
  • 收稿日期:2011-03-16 修回日期:2011-05-19 出版日期:2011-11-30 发布日期:2011-09-30
  • 作者简介:胡文峰( 1978 - ) ,男,安徽太湖县人,硕士研究生,主要从事气候变化和沙漠气象研究. E - mail: hwfeng123@ sohu. com
  • 基金资助:

    国家科技支撑计划课题( 2008BAC40B05 - 01) 及公益性行业( 气象) 科研专项( GYHY201006012) 共同资助

Climate Change Characteristic of Ruoqiang Oasis During Recent 55 Years

HU Wenfeng1,2,HE Qing2,JIN Lili1,2,ZHAO Congmin1,2
  

  1.  1. College of Geographical Science and Tourism,Xinjiang Normal University,Urumqi 830054,China;
    2. Institute of Desert Meteorology,CMA,Urumqi 830002,ChinaAbstract
  • Received:2011-03-16 Revised:2011-05-19 Online:2011-11-30 Published:2011-09-30

摘要:

利用1954 ~ 2008 年若羌气象站年平均气温、年降水量、年平均地面风速、年沙尘日数和沙尘暴日数等资料,分析了近55 a 若羌绿洲地面气候变化基本特征。研究表明: ( 1) 近50 a 来若羌绿洲各气象要素综合表现为显著的暖湿化趋势,其中年平均气温增温速率普遍为0. 25 ℃ /10 a,高于0. 22℃ /10 a 的全国平均水平,与全球变暖的大背景相一致; ( 2) 年降水量表现为小幅增加趋势,降水增加速率为6. 5 mm/10 a,与新疆降水量增加的趋势一致; ( 3) 年平均地面风速减小速率为0. 08 m·s - 1 /10 a,主要是由于农林绿化的增加; ( 4) 年沙尘日数、年沙尘暴日数都呈减少趋势,减少速率分别为21. 6 d /10 a 和4 d /10 a,与降水量增加、生态改善、气候的暖湿化有关; ( 5) 若羌绿洲的气温、降水、地
面风速、年沙尘日数用Mann - kendall 方法检验分别在不同年份发生了不同程度的突变。结果指出若羌绿洲气候正在趋于暖湿化。

关键词: 若羌绿洲, 气候变化, 突变, 变化趋势

Abstract:

Some characteristics of climate change was obtained by analyzing annual mean temperature,annual precipitation,annual mean surface wind speed,annual dust days and sand storm days in Ruoqiang oasis during 1954 - 2008. The results are as follows: ( 1) The annual mean temperature presented increasing trend with the rate of 0. 25 ℃ /10 a,which was consistent with that of the other region of Xinjiang; ( 2) The annual rainfall also increased generally with the increasing rate of 6. 5 mm/10 a; ( 3) The annual mean surface wind speed decreased but the trend was not obvious; ( 4) The annual dust and sand storm days decreased also with the rate of21. 6 d /10 a and 4 d /10 a; ( 5) There were some abrupt changes in annual temperature,rainfall,wind speed,dust and sand stormdays in different years obtained from Mann - Kendall test. All these showed that climate in Ruoqiang oasis was becoming warm and wet.

Key words:  Ruoqiang oasis, climate change, abrupt change, change trend

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