自然资源学报 ›› 2001, Vol. 16 ›› Issue (1): 59-64.doi: 10.11849/zrzyxb.2001.01.010

• 论文 • 上一篇    下一篇

河南省小麦干热风发生规律分析

陈怀亮, 邹春辉, 付祥建, 关文雅   

  1. 河南省气象科学研究所, 河南郑州 450003
  • 收稿日期:1999-11-05 修回日期:2000-05-10 出版日期:2001-02-25 发布日期:2001-02-25
  • 作者简介:陈怀亮(1967-),男,河南省辉县市人,工程师,硕士,主要从事农业气象、农业遥感研究。
  • 基金资助:

    河南省科委课题“河南省小麦灌浆期气象灾害及防御措施”资助项目

The EOF analysis on wheat dry-hot-wind in Henan Province

CHEN Huai liang, ZOU Chun hui, FU Xiang jian, GUAN Wen ya   

  1. Henan Meteorological Research Institute, Zhengzhou 450003, China
  • Received:1999-11-05 Revised:2000-05-10 Online:2001-02-25 Published:2001-02-25

摘要: 通过对河南省30个站1967~1996年近30年的气象资料统计,得到全省干热风发生日数,并对其进行了EOF分析。结果发现全省干热风日数场主要呈“南少北多”空间分布型,另外还有其它几种空间分布型;随时间推移,全省干热风发生日数呈减少趋势;对时间系数进行功率谱分析,发现具有准6年和准3年周期;通过相关分析,发现第一、第二模态时间系数与全省小麦单产存在显著相关关系。

关键词: 小麦, 干热风, EOF分析, 功率谱分析, 相关分析

Abstract: The number of dry hot wind days have been obtained by analyzing statistical data from 30 meteorological stations in Henan Province during 1967~1996 and the EOF analysis has been conducted.The results showed that the dry hot wind day fields mainly assume the spatial distribution pattern of “less in south and more in north " and some other distribution patterns.With the elapse of time,a decreasing tendency of the dry hot wind days occurred throughout the province.The quasi six year and quasi three year periods have been found by the power spectrum analysis on time coefficients.The appreciable correlation exists between the first and second model time coefficients and the wheat yield in Henan Province.

Key words: wheat, dry hot wind, EOF analysis, power spectrum analysis, correlation analysis

中图分类号: 

  • S429