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中国农学通报 ›› 2015, Vol. 31 ›› Issue (21): 233-238.doi: 10.11924/j.issn.1000-6850.casb14100075

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

甘肃民勤荒漠气候的稳定性研究

王大为,常兆丰,韩福贵,段晓峰   

  1. 甘肃省治沙研究所,甘肃省治沙研究所,甘肃省治沙研究所,甘肃省治沙研究所
  • 收稿日期:2014-10-21 修回日期:2015-06-29 接受日期:2015-05-14 出版日期:2015-07-28 发布日期:2015-07-28
  • 通讯作者: 王大为
  • 基金资助:
    国家 973前期课题 “绿洲边缘高大新月形沙丘稳定性研究” (2014CB460611)。

Stability Research on Desert Climate of Minqin County in Gansu Province

  • Received:2014-10-21 Revised:2015-06-29 Accepted:2015-05-14 Online:2015-07-28 Published:2015-07-28

摘要: 为研究在全球变暖过程中沙漠气候的稳定性,以中国西北部的民勤荒漠区1961—2013年的气象观测资料,运用一次线性趋势线和滑动标准差等方法,分析民勤荒漠气候在响应全球变暖过程中的不稳定性。结果表明:(1)1月和4月的平均气温的不稳定性增大,2月的等温日期提前10.36天。(2)12月和1月的极端最高气温的不稳定性增大,7月的极端最低气温的不稳定性增大,5月的极端最低气温的变异系数高达287.3%。研究结论认为,随着全球变暖民勤荒漠气候的不稳定性增强。气候的稳定性更值得人们关注。

关键词: 灌溉方式, 灌溉方式, 播期, 地膜春玉米, 水分利用效率

Abstract: In order to study the stability of desert climate, the author analyzes the instability of Minqin desert climate in response to global warming with meteorological data of 1961- 2013 by using the slide standard deviation method and the linear trend line method. The results show that: (1) instability of monthly average temperature of January and April is increasing, isothermal date of February advanced 10.36 d from 1961 to 2013; (2) the instability of the extremely maximum temperature of December and January is increasing, and the instability of the extremely minimum temperature of July is increasing. The coefficient of variation of the extremely minimum temperature of May is up to 287.3%. In conclusion, the instability of desert climate of Minqin is increasing with global warming, and the stability of climate is worthy of public attention.