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中国农学通报 ›› 2018, Vol. 34 ›› Issue (27): 152-158.doi: 10.11924/j.issn.1000-6850.casb17090072

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

近66a重庆北碚高温热浪变化特征及其对花木生长的影响

吉莉,司云燕,徐前进,汪志辉,陈湘,李强   

  1. 重庆市北碚区气象局,重庆市北碚区气象局,重庆市北碚区气象局,重庆市北碚区气象局,重庆市北碚区气象局,重庆市北碚区气象局
  • 收稿日期:2017-09-13 修回日期:2018-08-29 接受日期:2018-08-06 出版日期:2018-09-19 发布日期:2018-09-19
  • 通讯作者: 吉莉
  • 基金资助:
    重庆市气象软业务技术攻关面上项目“重庆市夏季主要极端天气风险评估”(YWGGMS-201806)。

Characteristics of the High Temperature Heat Wave in Beibei of Chongqing in 1951-2016 and Its Impact on the Growth of Flowers and Trees

  • Received:2017-09-13 Revised:2018-08-29 Accepted:2018-08-06 Online:2018-09-19 Published:2018-09-19

摘要: 为深入了解北碚区高温热浪的变化特征及其对花木生长的影响,利用重庆北碚区1951—2016年逐日平均最高气温、极端最高气温地面气象观测资料,综合采用线性回归、数理统计等方法分析分析北碚高温热浪日数、频次、强度的变化特征。结果显示,北碚高温日数、高温热浪及高温累积有效积温年际变化幅度大,在整个波动中呈现上升趋势;平均每年有32.5天的≥35℃高温日数,年均高温热浪次数为3.8次,年平均持续时间为24.7天;高温热浪引发的伏旱灾害频繁发生,在伏旱期间,当一侯中有3d极端最高温度>35.0℃时,高温伏旱开始影响花木的正常生长,当一侯中有3d极端最高温度>40.0℃时,高温伏旱对花木的生长造成严重影响。

关键词: 山药, 山药, 快繁, 组织培养, 扦插繁殖

Abstract: To have a deep understanding of the characteristics of high temperature heat wave in Beibei district of Chongqing and the impact on the growth of flowers and trees, the ground meteorological observation data of daily average maximum temperature and extreme maximum temperature in 1951-2016 were studied. Linear regression and mathematical statistics were combined to analyze the changing characteristics of days, frequencies and intensity of the high temperature and heat wave. The results revealed that there were significant inter-annual changes in high temperature days, high temperature heat waves, and the total effective accumulated temperature due to the high temperature in Beibei, with an upward trend in the entire fluctuation. Furthermore, the annual average of 32.5 days of high temperature ≥35℃ and 3.8 times of the high temperature heat wave were observed, and the annual average duration of high temperature heat wave was 24.7 days. Summer drought caused by the high temperature heat wave frequently occurred, within a period of five days among which the 3-day extreme maximum temperature was >35.0℃, the summer drought would affect the normal growth of flowers and trees. If the 3-day extreme maximum temperature was >40.0℃, the summer drought would severely affect the growth of flowers and trees.