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中国沙漠 ›› 2017, Vol. 37 ›› Issue (4): 770-774.DOI: 10.7522/j.issn.1000-694X.2016.00012

• 天气与气候 • 上一篇    下一篇

1961-2014年张掖市降水变化趋势

都军1,2, 高军凯3   

  1. 1. 中国科学院寒区旱区环境与工程研究所 沙坡头沙漠研究试验站, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049;
    3. 鲁东大学 资源与环境工程学院, 山东 烟台 264000
  • 收稿日期:2015-12-10 修回日期:2016-01-18 出版日期:2017-07-20 发布日期:2017-07-20
  • 作者简介:都军(1992-),女,山东威海人,硕士研究生,主要从事干旱区土壤生态学研究。E-mail:dujun20112613779@sina.com
  • 基金资助:
    国家自然科学基金项目(91425302,41171078)

Change Trend of Precipitation during 1961-2014 in Zhangye,Gansu,China

Du Jun1,2, Gao Junkai3   

  1. 1. Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. School of Resources and Environmental Engineering, Ludong University, Yantai 264000, Shandong, China
  • Received:2015-12-10 Revised:2016-01-18 Online:2017-07-20 Published:2017-07-20

摘要: 选取张掖气象站1961-2014年逐日降水观测资料,采用线性趋势分析和Mann-kendall 检验等方法分析了张掖市年降水量、年最大降水量、冬季降水量和其他季节降水量的变化趋势和突变特征。结果表明:1961-2014年张掖市年降水量总体呈增加趋势,其中1982-1984、1995-1996、2007-2013年降水量增加趋势显著。年最大降水量和冬季降水量增加趋势明显,分别发生了6次和1次突变,其中年最大降水量突变点分别发生在1963年、1980年、1982年、1984年、1987年和1991年;冬季降水量1964年后呈显著增加趋势,1969年降水量突变增加。而其他季节降水量呈波动增加趋势,突变增加分别在1963年、1967年和1969年发生。

关键词: 降水趋势, 突变分析, Mann-kendall检验, 张掖市, 干旱地区

Abstract: Based on the daily precipitation data of Zhangye meteorological station from 1961 to 2014,the change trend and mutation characteristics of annual precipitation,maximum precipitation,winter precipitation,and the precipitation in spring-autumn in Zhangye were analyzed through linear trend analysis and Mann-kendall test.The results showed that annual precipitation increased from 1961 to 2014,and it significantly increased in 1982-1984,1995-1996,2007-2013.Significant increases were found in maximum precipitation and winter precipitation,and there were six and one abrupt changes in the past 54 years,respectively.Abrupt changes of the maximum rainfall occurred in 1963,1980,1982,1984,1987 and 1991.Winter precipitation showed a significant increase trend from 1964,and an abrupt increase was found in 1969.The precipitation in spring-autumn showed a fluctuated increase trend,and five abrupt increases were observed in 1963,1967 and 1969,respectively.

Key words: precipitation trend, abrupt change analysis, Mann-Kendall test, Zhangye, arid zone

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