湖北农业科学 ›› 2020, Vol. 59 ›› Issue (14): 45-51.doi: 10.14088/j.cnki.issn0439-8114.2020.14.008

• 资源·环境 • 上一篇    下一篇

基于Morlet小波的北安市农业气候资源周期变化及趋势分析

徐铭远1, 王海宁2, 徐文龙3   

  1. 1.沈阳农业大学土地与环境学院,沈阳 110000;
    2.铁力市气象局,黑龙江 铁力 152500;
    3.北安市气象局,黑龙江 北安 164000
  • 收稿日期:2019-12-10 出版日期:2020-07-25 发布日期:2020-09-14
  • 通讯作者: 徐文龙(1974-),男,黑龙江依安人,高级工程师,主要从事综合气象业务,(电话)18145538550(电子信箱)qxjxwl@163.com。
  • 作者简介:徐铭远(2001-),女,黑龙江北安人,在读本科生,环境科学专业,(电话)13206939358(电子信箱)1291672180@qq.com

Analysis of the periodic change and trend of agro-climatic resources in Bei'an city based on Morlet wavelet

XU Ming-yuan1, WANG Hai-ning2, XU Wen-long3   

  1. 1. College of Land and Environment,Shenyang Agricultural University,Shenyang 110000,China;
    2. Tieli Meteorological Buearu, Tieli 152500,Heilongjiang,China;
    3. Bei'an Meteorological Buearu,Bei'an 164000,Heilongjiang,China
  • Received:2019-12-10 Online:2020-07-25 Published:2020-09-14

摘要: 根据黑龙江省北安国家基本气象站、农场气象站、区域气象站1959—2019年各项气象资料,采用小波分析法进行周期分析,采用一元线性拟合和二次多项式拟合进行线性趋势分析,对北安市近61年影响作物生长的农业气候资源进行分析。结果表明,近61年北安市作物生长季气温波动变化总体呈上升趋势;北安市积温呈显著上升趋势,以每10年70 (℃·d)的幅度缓慢上升,2000年以来处于较高水平,积温上升使热量资源表现出总体增加趋势。降水量呈现不显著下降趋势,小波分析生长季各月及季总降水量表现出周期变化。日照时数呈现周期变化的特点,线性趋势略呈减少。初霜日变化趋势是逐年延后,终霜日变化趋势是逐年提前,无霜期天数呈现周期变化,总体呈现增加趋势。

关键词: 作物生长季, 农业气候资源, 小波分析, 趋势分析, 北安市

Abstract: Based on the 1959—2019 meteorological data of the national basic meteorological stations, farm meteorological stations and regional meteorological stations in Bei'an city, Heilongjiang province, using Matlab to make wavelet analysis chart for cycle analysis, using one-dimensional linear fitting and quadratic polynomial fitting for linear trend analysis, the agricultural climate resources affecting crop growth in Bei'an city for nearly 61 years were analyzed. The results showed that the temperature fluctuation in the growing season of crops in Bei'an city had shown an overall rising trend in recent 61 years, while the accumulated temperature had shown a significant upward trend, rising slowly at the rate of 70 (℃·d) every 10 years, which had been at a higher level since 2000,and the accumulated temperature increase made the heat resources showing an overall increasing trend. The precipitation showed no significant decreasing trend. The wavelet analysis showed periodic changes in monthly and total precipitation of the growing season, and the sunshine hours showed periodic changes, and the linear trend slightly decreased. The change trend of the first frost day was delayed year by year, and the change trend of the final frost day was advanced year by year. The number of frost-free days showed periodic changes, and the overall trend showed an increasing trend.

Key words: crop growth period, agroclimatic resources, wavelet analysis, trend analysis, Bei'an city

中图分类号: