1956—2016年豫东平原干旱分析  

Drought analysis in the eastern plain of Henan province from 1956 to 2016

作　　者：杨丹 李中原 王国重[3] 刘守东 罗清元 李佳红 YANG Dan;LI Zhong-yuan;WANG Guo-zhong;LIU Shou-dong;LUO Qing-yuan;LI Jia-hong(Zhoukou Hydrology and Water Resources Survey Bureau in Henan Province,Zhoukou 466000,Henan,China;Henan Hydrology and Water Resources Bureau,Zhengzhou 450003,China;Yellow River Institute of Hydrology and Water Resources,Zhengzhou 450004,China;Jiaozuo Hydrology and Water Resources Survey Bureau in Henan Province,Jiaozuo 454002,Henan,China)

机构地区：[1]河南省周口水文水资源勘测局,河南周口466000 [2]河南省水文水资源局,郑州450003 [3]黄河水文水资源科学研究院,郑州450004 [4]河南省焦作水文水资源勘测局,河南焦作454002

出　　处：《湖北农业科学》2021年第9期61-65,共5页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(51609083);河南省水文水资源局委托项目(SL-2015-017);周口市水利局委托项目(2015-ZK-03)。

摘　　要：为了掌握豫东平原干旱特征及其规律,采用降水Z指数、小波分析、距平分析等方法对其干旱进行分析。结果表明,该区域干旱年际发生频率为29.5%,其中1956—1967年、1978—1986年、1996—2004年序列年际变化明显;干旱演变在10年周期尺度下震荡性最强,是主周期;干旱发生频率在24.7%~34.2%,干旱高发区大致集中在2个带状区域;干旱面积平均占比为30.03%,呈缓慢增加趋势。由此可知,该区域需强化水资源管理,发展高效节水农业、循环农业,确保粮食安全。The methods of precipitation Z index,wavelet and anomaly analysis were used to analyze the drought in the Eastern plain of Henan province,so as to master its characteristics and laws of drought.The results showed that the annual frequency of drought in this area was 29.5%,the variation of the 1956 to 1967,1978 to 1986 and 1996 to 2004 sequences were obvious.The drought evolution was the most oscillatory in the 10a cycle scale,and was the main cycle.The frequency of the drought was between 24.7%and 34.2%,and the drought-prone areas were mainly concentrated in two zones.The average ratio of drought area was 30.03%,which showed a slow increasing trend.It can be seen that the region should strengthen water resources management developing high-efficiency water-saving and circular agriculture,to ensure food security.

关 键 词：干旱 降水Z指数 小波分析 泰森多边形法 豫东平原 

分 类 号：P467[天文地球—大气科学及气象学]