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中国沙漠 ›› 2005, Vol. 25 ›› Issue (1): 137-139.

• 研究简报 • 上一篇    下一篇

青藏高原40年来降水变化趋势及突变的分析

马晓波, 胡泽勇   

  1. 中国科学院 寒区旱区环境与工程研究所, 甘肃 兰州  730000
  • 收稿日期:2003-07-08 修回日期:2003-10-30 出版日期:2005-01-20 发布日期:2003-10-30

Precipitation Variation Characteristics and Abrupt Change over Qinhai-Xizang Plateau in Recent 40 Years

MA Xiao-bo, HU Ze-yong   

  1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2003-07-08 Revised:2003-10-30 Online:2005-01-20 Published:2003-10-30

摘要: 利用青藏高原84个台站自建站至2001年的气象资料,分析了近40 a来的降水变化时空分布特征、变化趋势及突变,结果表明降水有所增加,最大为10.2%;降水是渐进式的变化,高原主体突变不明显,青海和四川西北部分别于1968年和1972年发生突变。

关键词: 青藏高原, 降水, 趋势, 突变

Abstract: Monthly precipitation data of 84 stations over Qinghai-Xizang Plateau from 1950s to 2001 are analyzed. The results indicate that precipitation in most parts of Qinghai-Xizang Plateau increases smoothly; the increase of 10.3% in southern part of the plateau is the biggest figure. The abrupt changes are detected in Qinghai and northwest Sichuan in 1968, 1972 separately.

Key words: Qinghai-Xizang Plateau, precipitation, trend, abrupt change

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