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冰川冻土 ›› 2013, Vol. 35 ›› Issue (4): 874-882.doi: 10.7522/j.issn.1000-0240.2013.0099

• 冰冻圈与全球变化 • 上一篇    下一篇

1951-2010年内蒙古霍林河流域气候变化特征

丹丹1,2, 春喜1,2, 刘美萍1,2, 刘月1,2   

  1. 1. 内蒙古师范大学 蒙古高原环境与全球变化实验室, 内蒙古 呼和浩特 010022;
    2. 内蒙古师范大学 地理科学学院, 内蒙古 呼和浩特 010022
  • 收稿日期:2012-11-10 修回日期:2013-03-22 出版日期:2013-08-25 发布日期:2013-09-11
  • 作者简介:丹丹(1990-),女,内蒙古兴安盟人,2011年毕业于内蒙古师范大学,现为在读硕士研究生,主要从事环境变化研究.E-mail:duolan1018@163.com
  • 基金资助:

    国家重点基础研究发展计划(973计划)项目(2012CB426508);国家自然科学基金项目(40962004);内蒙古自然科学基金项目(2009ZD04)资助

Characteristics of Climate Change in Huolin River Basin, Inner Mongolia, 1951-2010

DAN Dan1,2, CHUN Xi1,2, LIU Mei-ping1,2, LIU Yue1,2   

  1. 1. Key Laboratory of Mongolian Plateau Environment and Global Change, Inner Mongolia Normal University, Hohhot Inner Mongolia 010022, China;
    2. College of Geographic Science, Inner Mongolia Normal University, Hohhot Inner Mongolia 010022, China
  • Received:2012-11-10 Revised:2013-03-22 Online:2013-08-25 Published:2013-09-11
  • Contact: 春喜,E-mail:chunxi@imnu.edu.cn E-mail:chunxi@imnu.edu.cn

摘要:

以季风边缘区的霍林河流域为研究对象, 利用研究区周缘9个气象站台1951-2010年的逐月气象数据, 通过对气温和降水量进行趋势分析、Mann-Kendall检验以及相关分析, 探讨流域气候变化过程、特征及周期. 结果表明: 在1951-2010年年均气温上升2.3 ℃, 其倾向率为0.38 ℃·(10a)-1, 总体呈上升的趋势. 其中, 春季气温升幅最为明显, 倾向率为0.50 ℃·(10a)-1. 同时, 年均气温以1986年为跃点, 发生突变, 突变后的1987-2010年平均气温比突变前1951-1986年气温高1.3 ℃, 并存在6~8 a和15 a的周期律. 年降水量近60 a来减少了83.9 mm, 其倾向率为-13.98 mm·(10a)-1, 呈下降的趋势. 其中, 夏季降水量的下降最为明显, 倾向率为-11.41 mm·(10a)-1. 年降水量以1998年为跃点发生突变, 突变后的1999-2010年降水量比突变前1951-1998年下降76 mm. 并存在4 a和8~9 a的振荡周期. 流域气温变化与北极涛动呈正相关, 而降水量与夏季风指数呈负相关.

关键词: 霍林河流域, 气候变化, 突变分析

Abstract:

Based on monthly mean air temperature and monthly precipitation data from nine meteorological stations in Huolin River basin from 1951 to 2010, using climatic linear trend, Mann-Kendall test and correlation analysis methods, the spatial-temporal characteristics of climatic change in this region were analyzed in this paper. The results indicated that the annual temperature had increased 2.3 ℃, with an increasing rate of 0.38 ℃·(10a)-1 showing an up ward trendin general from 1951 to 2010 in the basin.The increase of temperature in spring was most obvious,with a changing rate of 0.50 ℃ ·(10a)-1.The annual mean temperature had an abrupt change mainly in 1986,and the temperature averaged from 1987 to 2010 was more than 1.3 ℃ higher than that from 1951 to 1986.There were significant cyclical changes with 6~8 and 15 aperiod. Annual precipitation had fallen 83.9 mm,with a decreasing rate of 13.98 mm·(10a)-1 and a downward trend in general from 1951 to 2010.The decrease of precipitation was most pronounced in summer,with adecrea singrate of 11.41 mm·(10a)-1.Annual precipitation abrupt was mainly observed in 1998, and the precipitation averaged from 1998 to 2010 was 76 mm less than that from 1951 to 1997. There were significant cyclical changes with 4 years and 8~9 years periods. It is found that the change in temperature has positive correlation with AO index and the change in precipitation negatively correlates with EAP index.

Key words: Huolin River basin, climate change, climate abrupt analysis

中图分类号: 

  • P467