湖北农业科学 ›› 2020, Vol. 59 ›› Issue (8): 41-44.doi: 10.14088/j.cnki.issn0439-8114.2020.08.008

• 资源·环境 • 上一篇    下一篇

西北地区秋季降水量特征与小麦产量的关系分析

刘英1, 周忠文1, 邱宁刚1, 李巧霞2   

  1. 1.庆阳市气象局,甘肃 庆阳 745000;
    2.环县气象局,甘肃 环县 745700
  • 收稿日期:2019-07-19 出版日期:2020-04-25 发布日期:2020-07-03
  • 通讯作者: 周忠文(1974-),男,甘肃宁县人,高级工程师,主要从事农业气象研究与服务工作,(电话)13909345296(电子信箱)gsznzzw@163.com。
  • 作者简介:刘 英(1975-),女,甘肃西峰人,高级工程师,主要从事天气预报及应用气象等研究,(电话)13909345296(电子信箱)gshx_ly@163.com。
  • 基金资助:
    干旱气象科学研究基金项目(IAM201811); 甘肃省气象局科研项目(GSMACg2018-15)

Relationship analysis between autumn precipitation characteristics and wheat yield in northwest China

LIU Ying1, ZHOU Zhong-wen1, QIU Ning-gang1, LI Qiao-xia2   

  1. 1. Qingyang Meteorology Bureau, Qingyang 745000,Gansu,China;
    2. Huanxian Meteorological Bureau,Huanxian 745700,Gansu,China
  • Received:2019-07-19 Online:2020-04-25 Published:2020-07-03

摘要: 为了研究西北地区秋季降水空间分布特征和时间变化规律及与小麦产量的关系,利用EOF、REOF,对西北地区119个气象站1961—2016年资料进行了分析。结果表明,西北地区秋季降水量具有明显的空间差异,最少的是青海的冷湖气象站,为0.9 mm,最多的是陕西的石泉气象站,为270.0 mm。西北地区秋季降水量20世纪60、70、80年代和2001—2016年以增加为主,20世纪90年代以减少为主。西北秋季降水量可以分为6个气候区,各代表站降水量演变表明,1960—1970年乌鲁木齐、和田、格尔木多,其他代表站少。三阶曲线演变表明乌鲁木齐2005年以后减少,其他代表站增加。秋季降水量与来年小麦产量呈明显正相关。

关键词: 西北地区, 秋季降水量, 气候特征, 小麦产量

Abstract: In order to study the spatial distribution characteristics and temporal variation of autumn precipitation in northwest China and the relationship with wheat yield, EOF and REOF were used to analyze the data of 119 meteorological stations in northwest China from 1961 to 2016. The results showed that there were significant spatial differences in autumn precipitation in northwest China. The minimum was 0.9 mm at Lenghu meteorological station in Qinghai province, and the maximum was 270.0 mm at Shiquan meteorological station in Shaanxi province. Autumn precipitation in northwest China mainly increased in the 1960s, 1970s, 1980s and 2001—2016, while decreased in the 1990s. The autumn precipitation in northwest China could be divided into six climatic zones. The precipitation evolution of each representative station showed that there were many representative stations in Urumqi, Hetian and Golmud, but little others in 1960s and 1970s. The evolution of the third-order curve showed that precipitation of Urumqi decreased after 2005, while other representative stations increased. Precipitation in autumn was positively correlated with wheat yield in the following year.

Key words: northwest region, autumn precipitation, climatic characteristics, wheat yield

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