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中国农学通报 ›› 2023, Vol. 39 ›› Issue (19): 93-101.doi: 10.11924/j.issn.1000-6850.casb2022-0543

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

大兴安岭林区1970—2019年积温的时空变化特征

张茹1(), 杜金玲2, 马秀枝1(), 邹逸航3, 郝晨阳1, 付宇1   

  1. 1 内蒙古农业大学林学院,呼和浩特 010019
    2 内蒙古呼伦贝尔市气象局,内蒙古呼伦贝尔 021008
    3 内蒙古自治区气象台,呼和浩特 010051
  • 收稿日期:2022-06-27 修回日期:2022-11-10 出版日期:2023-07-05 发布日期:2023-07-03
  • 通讯作者: 马秀枝,女,1974年出生,内蒙古呼和浩特人,教授,博士,研究方向:生态系统碳氮循环及温室气体。通信地址:010019 内蒙古农业大学,Tel:0471-4301330,E-mail:luckmxy@imau.edu.cn
  • 作者简介:

    张茹,女,1995年出生,内蒙古呼和浩特人,硕士,研究方向:生态气象。通信地址:010019 内蒙古农业大学林学院,Tel:0471-4301330,E-mail:

  • 基金资助:
    内蒙古引进国外智力成果示范项目“基于木炭添加的内蒙古沼泽湿地固碳减排潜力提升”(2022YFYZ0003)

Temporal and Spatial Variation Characteristics of Accumulated Temperature in the Great Khingan Forest Area of Inner Mongolia from 1970 to 2019

ZHANG Ru1(), DU Jinling2, MA Xiuzhi1(), ZOU Yihang3, HAO Chenyang1, FU Yu1   

  1. 1 College of Forestry, Inner Mongolia Agricultural University, Hohhot 010019
    2 Meteorological Bureau of Hulunbuir City, Hulunbuir, Inner Mongolia 021008
    3 Meteorological Observatory of Inner Mongolia Autonomous Region, Hohhot 010051
  • Received:2022-06-27 Revised:2022-11-10 Online:2023-07-05 Published:2023-07-03

摘要:

研究依据内蒙古大兴安岭林区11个气象站点1970—2019年日平均温度资料,旨在分析气候变化背景下积温的时空变化特征。采用MK突变检验、小波分析等对不同界限温度下积温的初始日期、终止日期、持续日数、积温变化等进行研究。结果表明,正积温初日提前、终日推后;负积温呈相反趋势。在时间上,不同界限温度下积温变化幅度不同,但整体上受持续天数变化影响均呈现升高的趋势,各站点与全站变化整体趋势基本一致。正积温均大约在1994年前后发生突变,后期显著上升并且通过0.05水平显著性检验,负积温在20世纪80年代间存在多个突变时间点。各积温周期性变化均在2年尺度内波动显著。在空间上,纬度及海拔对积温变化有明显影响,积温整体由南到北呈减少趋势,其中阿尔山积温受海拔高度影响而减少。

关键词: 大兴安岭林区, 界限温度, 积温, 持续日数

Abstract:

Based on the daily average temperature data from 1970-2019 at 11 meteorological stations in the Great Khingan forest area of Inner Mongolia, we analyzed the temporal and spatial variation characteristics of accumulated temperature under the background of climate change. MK mutation test and wavelet analysis were used to study the changes of the initial date, termination date, continuous days and accumulated temperature under different boundary temperatures. The results showed that the first day of positive accumulated temperature was advanced and the last day was postponed; the negative accumulated temperature showed the opposite trend. In terms of time, the variation range of accumulated temperature at different boundary temperatures was different, but as a whole, it showed an increasing trend due to the change of continuous days, and the variation trend of each station was basically the same as that of the whole stations. The positive accumulated temperature mutated around 1994, rose significantly in the later period and passed the 0.05 level significance test. There were multiple mutation time points in the negative accumulated temperature in 1980s. The cyclical changes of each accumulated temperature fluctuated significantly within the 2 a scale. Spatially, latitude and altitude had obvious effects on the variation of accumulated temperature, and the overall accumulated temperature decreased from south to north, and the accumulated temperature in Aershan decreased due to the influence of altitude.

Key words: the Great Khingan forest area, boundary temperature, accumulated temperature, continuous days