Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (35): 78-87.doi: 10.11924/j.issn.1000-6850.casb2020-0012

Special Issue: 小麦 农业气象

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Impact of Climate Change on Spring Wheat Growth in Different Climate Types in Northwest China

Yang Yang1(), Ma Yihao2(), Zhao Hong1, Qi Yue1, Wang Runyuan1, Zhang Kai1, Wang Heling1   

  1. 1Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Lanzhou 730020
    2Gaolan County Meteorological Bureau, Lanzhou 730020
  • Received:2020-04-17 Revised:2020-08-22 Online:2020-12-15 Published:2020-12-18
  • Contact: Ma Yihao E-mail:yangyy120300@163.com;myh220421@163.com

Abstract:

To study the impacts of observed climate change on crop development and yield could provide more accurate information for assessing the effect of climate change on crop production. In this study, we used ground observation data from five case areas including extreme drought (Dunhuang), arid (Wuwei), semi-arid (Dingxi), semi-humid (Linxia), and humid (Mixian) in northwest China’s 1981(1986)-2017 to analyze the meteorological trends and determine the relationship between spring wheat growth, yield and climatic factors. The results showed that the climate change patterns and their impacts on spring wheat phenology and yield in these stations were diverse both spatially and temporally during the period of 1981-2017. Except the warmer and wetter trends in extreme arid regions, warmer and drier trends were observed in other regions. Correlation analysis showed that spring wheat production in Wuwei, Dingxi and Linxia stations increased in 1981 (1986)-2017, but the change trend was not significant except Wuwei station. The decrease of days ≥30℃ during the wheat growth period in Wuwei station increased the output in Wuwei station in the 37 years, however, the increase of precipitation during the wheat growth period, more grains per panicle and obviously fewer infertile spikelets in Dingxi station increased the output in Dingxi station in the recent 32 years. It is estimated that the global warming trend and change in precipitation pattern will further impact the production and yield of spring wheat in northwest China.

Key words: northwest China, climate change, spring wheat, growth, phenology

CLC Number: