摘要
根据郑州市1951—2013年的年降水资料,基于降水距平百分率R指数、Z指数和标准差d指数方法划分郑州市的旱涝等级,对郑州市的旱涝情况作出评估。三种干旱指数对同一旱涝情况的响应快慢不同,判定正常的年份是一致的,只是判定的旱涝等级存在差别。Z指数判定旱涝趋势的可信度最高,d指数次之,R指数最低。
According to the annual precipitation data of Zhengzhou City from 1951 to 2013,the drought and flood level of Zhengzhou City was divided based on the percentage of precipitation anomaly,Z index and standard deviation index,and the drought and flood conditions are evaluated.The results showed that compared with other indexes,the Z index can accurately evaluate the drought and flood disaster in Zhengzhou City and provide reference for its later forecast.
作者
宋艳红
朱学兰
彭高辉
张愿章
SONG Yanhong;ZHU Xuelan;PENG Gaohui;ZHANG Yuanzhang(College of Statistics,North China University of Water Resources and Electric Power,Zhengzhou Henan 450046)
出处
《河南科技》
2018年第1期158-160,共3页
Henan Science and Technology
基金
河南省高等学校重点科研项目"河南省农业干旱动态评价方法和适应性灌溉管理"(15A570008)
华北水利水电大学大学生创新创业训练计划项目(2016XA023)
