摘要
依据河南新乡、卢氏、郑州、开封四地区1955—2010年近56年的年降水资料,采用线性倾向估计、小波分析和Z指数方法,对河南四地区趋势性、相关性、周期性及旱涝情况进行了研究.结果表明:河南四地区的空间区域降水量总体呈现西少东多、南少北多的特点;降水第一主周期趋势基本保持一致,平均周期为18 a左右,随着时间尺度的变化,区域地理差异也随着小周期的波动逐渐凸显出来.
Based on the annual precipitation data of four areas in Henan Province such as Xinxiang,Lushi,Zhengzhou and Kaifeng,during 1955—2010,using linear inclination estimation,wavelet analysis,Z index and other methods,the characteristics of precipitation in four regions of Henan: trend,correlation,periodicity,drought and flood conditions were studied. The results showed that the spatial precipitation in the four regions of Henan Province is gradually increased from west to east,and gradually increased from south to north. The overall trend of the first main period remained the same,the average cycle is about 18 years,along with change of time scale,regional geographic differences is with small periodic fluctuations gradually highlighted.
出处
《河南教育学院学报（自然科学版）》
2017年第4期17-21,共5页
Journal of Henan Institute of Education(Natural Science Edition)
基金
河南省高校科技创新人才支持计划资助(15HASTIT046)
河南省科技攻关项目资助(152102110095)
河南省高等学校重点科研项目资助(15A570008)
华北水利水电大学大学生创新创业训练计划项目(2016XB135)
关键词
周期性
小波分析
线性趋势分析
旱涝分析
Z指数
periodicity
wavelet analysis
linear tendency analysis
drought-flood analysis
Z index
