摘要
以河南省15个地面气象观测站1960-2019年月降水资料为依据,采用标准化降水指数作为干旱指标,构建了河南省的降水标准化综合指数,并分析了河南省近60 a各指数的干旱频率和站次比的演变特征.结果表明:近60a来河南省年度降水标准化综合指数的站次比和季节性干旱尺度下春旱、秋旱站次比呈不显著上升趋势、夏旱、冬旱站次比呈下降趋势;从干旱频率看,河南省各地综合干旱频率在26.67%至36.67%之间,主要以轻旱和中旱为主,西部地区干旱发生频率较高,而东部地区干旱发生频率较低;年度综合、季尺度上干旱发生的主要覆盖范围为区域性干旱和局域性干旱;季节性干旱中春旱、夏旱、秋旱发生频率相当,且各季节性干旱表现出各自的区域性特征.
Based on the monthly precipitation data of 15 meteorological ground observation stations in Henan Province from 1960 to 2019,the standardized precipitation index was used as the drought indicator to construct a standardized comprehensive precipitation index for Henan Province,and the evolution characteristics were analyzed,which affect the drought frequency and station ratio of each index in Henan Province in the past 60years.The results show that in the past 60 years,the station ratio of the annual precipitation standardized comprehensive index in Henan Province and the station ratio of spring drought and autumn drought under the seasonal drought scale showed an insignificant upward trend,and the station ratio of summer drought and winter drought showed a downward trend.In terms of drought frequency,the comprehensive drought frequency of Henan Province is between 26.67%and 36.67%,mainly light drought and moderate drought.The drought frequency in the western region is relatively high,while that in the eastern region is relatively low.Under the annual comprehensive and seasonal scale,the drought coverage areas are regional and local.For seasonal droughts,the frequency of spring drought,summer drought and autumn drought is very close,and each seasonal drought presents its own regional characteristics.
作者
吴丽
田俊峰
姜忠峰
WU Li;TIAN Junfeng;JIANG Zhongfeng(School of Municipal and Enviormantal Engineering,Henan university of Urban Construction,Pingdingshan 467036,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210098,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2022年第5期421-430,共10页
Journal of Liaoning Technical University (Natural Science)
基金
河南省高等学校重点科研项目(19A416001)
河南省科技攻关软科学研究项目(212400410145)
水文水资源与水利工程科学国家重点实验室开放课题基金(2017490611)
国家级大学生创新创业计划训练项目(202011765037)
关键词
标准化降水指数
干旱
河南省
降水标准化综合指数
干旱频率
standardized precipitation index
drought
Henan Province
comprehensive drought index
drought frequency
作者简介
吴丽(1981-),女,内蒙古乌兰察布人,博士,副教授,主要从事气候变化与水文气象预报方面的研究.
