中国农业气象 ›› 2012, Vol. 33 ›› Issue (01): 1-7.doi: 10.3969/j.issn.1000-6362.2012.01.001

• 论文 •    下一篇

民勤荒漠气候对全球变暖的响应特征

常兆丰,朱国庆,韩福贵,仲生年   

  1. 1甘肃民勤荒漠草地生态系统国家野外观测研究站,民勤 733300;2甘肃省荒漠化防治重点实验室/甘肃省治沙研究所,兰州730070.
  • 收稿日期:2011-05-20 出版日期:2012-02-20 发布日期:2012-02-09
  • 作者简介:常兆丰(1957-),甘肃会宁人,硕士,研究员,长期从事荒漠生态研究。Email:czf123@sina.com
  • 基金资助:

    国家“973”前期“甘肃河西绿洲边缘积沙带的形成及其生态效应”;

    甘肃省科学基金项目“白刺沙包积沙层所表征的气候环境信息”。

Response of Desert Climate in Minqin to Global Warming.

 CHANG  Zhao-Feng, ZHU  Guo-Qing, HAN  Fu-Gui, ZHONG  Sheng-Nian.   

  1. 1Minqin National Field Observation & Research Station on Ecosystem of Desertified Rangeland, Minqin 733300, China;2Key Laboratory of Desertification Combating of Gansu Province/Gansu Desert Control Research Institute, Lanzhou 730070.
  • Received:2011-05-20 Online:2012-02-20 Published:2012-02-09

摘要: 近年来,全球气候变暖已成为一个全社会广泛关注的课题,荒漠区是地球上极其重要的气候区之一,其对全球气候变暖的响应特征同样值得关注。本文以甘肃省民勤荒漠区为研究对象,对该区域1961-2009年的气温、降水、空气湿度、风速和日照的变化趋势进行了分析。结果表明,1961-2009年,民勤荒漠区年平均气温增高幅度高于全国水平,低于东北地区和西北干旱区水平,尤其春、冬季增温明显;当地年平均气温、年降水量、年平均空气相对湿度、年平均风速和年日照时数的变化均表现出一定的阶段性,但其变化阶段并不完全一致;年极端最高气温的波动显著增大,荒漠气候的不稳定性在增强。年平均风速为减小趋势,年空气相对湿度的波动为减小趋势,并与年降水量呈显著正相关(P<0.05),与年平均风速呈极显著负相关(P<0.01)。

关键词: 荒漠气候, 全球变暖, 阶段性, 民勤

Abstract:  Global warming has become a widespread concern society as a whole in recent years, and desert climate was worth to pay more attention under global warming. Climate change, including the temperature, precipitation, air humidity, wind speed and sunshine in Minqin during 1961-2009, was analyzed in the paper. The results showed that the increasing rate of annual average temperature in Minqin desert area was higher than the national average, especially in spring and winter, but lower than northeast and northwest of China. The variation of annual average temperature, annual precipitation, annual average air relative humidity, average wind speed and sunshine hours changed in different stages. The highest temperature fluctuation increased significantly, instability of desert climate was stronger. The annual average wind speed and air humidity decreased. There was positive correlation between air humidity and precipitation (P<0.05), and negative correlation between annual average wind speed and air relative humidity (P<0.01).

Key words: Desert climate, Global warming, Stage, Minqin