干旱区研究

Arid Zone Research >

2016 , Vol. 33 >Issue 3: 601 - 608

DOI: https://doi.org/10.13866/j.azr.2016.03.21

Climatic Change

Instability of Climate Change in the Minqin Desert Area

  • CHANG Zhao-feng ,
  • MA Zhong-hua ,
  • WANG Da-wei ,
  • HAN Fu-gui ,
  • DUAN Xiao-feng WANG Qiang-qiang ,
  • ZHANG Jian-hui
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  • 1. Gansu Minqin National Field Observation & Research Station on Ecosystem of Desertified Rangeland,Minqin 733300,Gansu,China;
    2. Gansu Institute of Desert Control Research, Lanzhou 730070,Gansu,China;
    3. Wuwei Meteorological Bureau, Wuwei 730030,Gansu,China

Received date: 2014-06-20

  Revised date: 2014-10-10

  Online published: 2016-05-31

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Abstract

Impact of climate instability to agriculture, forestry and animal husbandry production is more serious than that of continuous temperature increase. In this study, the instability of desert climate in the Minqin desert area and its response to global warming was analyzed based on the meteorological data during the period of 1961-2013. The results showed that the instability of monthly average temperature in January and April was increased, and the isothermal date of February became 10.36 days earlier during the period from 1961 to 2013. The instability of extreme maximum temperature in December and January and that of extreme minimum temperature in July was increased. The variable coefficient of extreme minimum temperature in May was as high as 287.3%. Instability of precipitation in January was increased. Moreover, the stability of annual precipitation was increased. Impact of climate change on local agricultural production was mainly caused by a sudden increase of extreme maximum temperature and a sudden drop of extreme minimum temperature. The analyzed results of data from other sites in the marginal zone of the desert in the Hexi Corridor also supported the conclusions in this paper. Impact of climate instability on agricultural production was more serious than that of continuous temperature increase under global warming.

Key words： climate change; desert climate; instability; Minqin

Cite this article

CHANG Zhao-feng , MA Zhong-hua , WANG Da-wei , HAN Fu-gui , DUAN Xiao-feng WANG Qiang-qiang , ZHANG Jian-hui . Instability of Climate Change in the Minqin Desert Area[J]. Arid Zone Research, 2016 , 33(3) : 601 -608 . DOI: 10.13866/j.azr.2016.03.21

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