Regional Characteristics and Abrupt Change of Maximum and Minimum Temperatures in Hexi Corridor Oasis During the Past 46 Years

MA Ya-lan; LIU Pu-xing; HUO Hua-li

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Regional Characteristics and Abrupt Change of Maximum and Minimum Temperatures in Hexi Corridor Oasis During the Past 46 Years

- Regional Characteristics and Abrupt Change of Maximum and Minimum Temperatures in Hexi Corridor Oasis During the Past 46 Years
- Bulletin of Soiland Water Conservation Vol. 29, Issue 2, Pages: 192-197(2010)
- 作者机构：
  
  西北师范大学地理与环境科学学院,甘肃,兰州,730070
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- Published：2010
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MA Ya-lan, LIU Pu-xing, HUO Hua-li. Regional Characteristics and Abrupt Change of Maximum and Minimum Temperatures in Hexi Corridor Oasis During the Past 46 Years[J]. Bulletin of Soiland Water Conservation, 2010, 29(2): 192-197.
DOI：

MA Ya-lan, LIU Pu-xing, HUO Hua-li. Regional Characteristics and Abrupt Change of Maximum and Minimum Temperatures in Hexi Corridor Oasis During the Past 46 Years[J]. Bulletin of Soiland Water Conservation, 2010, 29(2): 192-197. DOI：

摘要

以1960—2005年河西走廊绿洲月平均最高、最低气温资料为基础，采用气候倾向率、5a滑动平均、Mann—Kendall突变检验等方法对河西走廊绿洲最高、最低气温的时空变化特征和突变特点进行了分析。结果表明，近46a来河西走廊绿洲最高、最低气温均有明显增温趋势，最低气温增温幅度明显大于最高气温;增温趋势强弱的地域差异显著，最高气温中部>西部>东部，最低气温东部>中部>西部;四季均呈现增温趋势，冬季增温幅度最大;研究区升温突变明显，突变时间存在空间和季节差异。

Abstract

Based on the monthly averaged maximum and minimum temperatures in Hexi corridor oasis from 1960 to 2005

the characteristics of spatiotemporal variation and the abrupt change are analyzed by the methods of climate tendency rate

5-year running means

and Mann—Kendall abrupt change test. Results are reported as follows:Firstly

the maximum and minimum temperatures increased obviously

the warming amplitude of minimum temperature is remarkably higher than maximum temperature

and the anti-symmetrical warming trends presented. Secondly

the warming amplitudes of maximum and minimum temperatures are obviously different in different regions. By the maximum temperature

the order is central partwestern parteastern part and by the minimum temperature

eastern partcentral partwestern part. Thirdly

the maximum and minimum temperatures increased during each season

but they are higher in winter than other seasons. Fourthly

the abrupt changes of maximum and minimum temperatures are apparent and they are different in different regions and seasons.

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