地理科学进展 ›› 2010, Vol. 29 ›› Issue (7): 833-839.doi: 10.11820/dlkxjz.2010.07.009

• 气候与水文过程 • 上一篇    下一篇

泾河流域气候变化及其与ENSO的关系

李志1, 王健1, 刘文兆1   

  1. 1. 西北农林科技大学资源环境学院,陕西杨凌712100|
    2. 中国科学院水利部水土保持研究所,陕西杨凌712100
  • 收稿日期:2010-01-01 修回日期:2010-05-01 出版日期:2010-07-25 发布日期:2010-07-25
  • 作者简介:李志(1978-),男,山东临沂人,博士,副教授,主要从事全球变化与水文生态方面的研究。E-mail: lizhibox@126.com.
  • 基金资助:

    十一五科技支撑计划项目(2006BAD09B09); 中央高校基本科研业务费专项资金(Z109021002)。

Climate Changes in Jinghe Watershed and Its Relationship with ENSO

LI Zhi1, WANG Jian1, LIU Wenzhao1   

  1. 1. College of Resources and Environment, Northwest A &|F University, Yangling 712100, Shaanxi, China|
    2. Institute of Soil and Water Conservation, CAS &|Ministry of Water Resources, Yangling 712100, Shaanxi, China
  • Received:2010-01-01 Revised:2010-05-01 Online:2010-07-25 Published:2010-07-25

摘要:

ENSO(厄尔尼诺-南方涛动)常引起大气环流的改变并导致气候异常,探讨区域气候变化与ENSO的关系有助于理解区域水文等各方面的变化。通过Mann-Kendall、相关性检验和小波分析等方法,研究了1960-2005年泾河流域气候变化及其与ENSO的关系。结果表明,1960-2005年,泾河流域气候趋向暖干,且这种趋势在90年代以来愈加显著。气候变化与ENSO有显著的关系。降水对ENSO的响应程度强于温度;降水可能受南方涛动的影响比较大,而温度可能受海表温度的影响较多;ENSO暖事件对泾河流域气候变化的影响可能大于冷事件。

关键词: ENSO, Mann-Kendall, 泾河流域, 气候变化, 小波分析

Abstract:

As ENSO (El Nino-Southern Oscillation) often leads to alteration in atmospheric circulation and further causes climatic variation, exploring the relationship between regional climate changes and ENSO is helpful for understanding the variation in regional hydrology. This study analyzed the relationship between the climate changes in the Jinghe watershed and ENSO through Mann-Kendall, correlation test and wavelet analysis. Results showed that climate tended to be warmer and drier during 1960-2005, and this trend has been more significant since the 1990s. Climate changes in the Jinghe watershed were closely correlated with ENSO. Precipitation was more sensitive to ENSO than temperature. Precipitation was more sensitive to SOI and temperature was more sensitive to SST. The impacts of ENSO warm events on climate changes in the Jinghe watershed were more significant than cold events.

Key words: climate change, ENSO, Jinghe watershed, Mann-Kendall, wavelet analysis