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cje ›› 2010, Vol. 29 ›› Issue (01): 50-54.

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Responses of apple tree’s phonology in east and west sides of Liupanshan Mountain to climate change.

FAN Xiao-chun1,2;WANG Wei-tai1,3;YANG Xiao-hua2;WU Yin-juan2   

  1. 1Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster, Lanzhou
    730020, China;2Pingliang Meteorological Bureau, Pingliang 744000, Gansu, China;3Qingyang Meteorological Bureau, Qingyang 745000, Gansu, China
  • Online:2010-01-08 Published:2010-01-08

Abstract: Based on the 1971-2008 temperature data from Kongtong and Jingning meteorological stations and the 1987-2008 phenological data from Kongtong station, the effects of climate change on apple tree’s phenophase in east and west sides of Liupanshan Mountain were analyzed. Since 1971, the air temperature in Pingliang of Gansu increased obviously with a linear trend, mainly in winter and spring, under the background of global warming. The accumulated temperature of ≥10 ℃ increased too. Under the effects of temperature increase, the apple tree’s budburst, leaf-developing, and flowering stages advanced 14-18 days, and the advancement of the phenophases in spring was greater in the east side than in the west side of Liupanshan Mountain. Climate change increased the freeze damage of apple tree’s florescence in spring. The threshold values were obtained by analyzing the correlations between apple tree’s growth and frost disaster. When the minimum ground temperature during April 11-20, April 21-30, and May 1-10 was ≤-2.0 ℃ and its duration was ≥2 days, the frozen area of apple trees achieved 80%, 90% and 100%, respectively.

Key words: Wheat, Nitrogen use efficiency (NUE), Genotypic variation, Environmental effect, Evaluation index