摘要
利用郑州市1951—2010年的月降水资料,根据标准化降水指数分析了郑州市不同时间尺度的旱涝变化状况.研究结果表明:郑州市的旱涝变化剧烈,旱灾较为频繁出现,近5年来,处于降水相对较多时期,近年内有较大旱涝灾害的可能性较大.
The variations of droughts and floods in different time scales are analyzed based on standardized precipitation index（SPI）,using the observational monthly precipitation data of Zhengzhou City from 1951 to 2010.The results show that the laws of droughts and floods change greatly and the drought appears more frequently in Zhengzhou.In recent five years,the precipitation is relatively abundant in Zhengzhou,and the greater droughts and floods may be occur in recent years.
出处
《华北水利水电学院学报》
2011年第6期30-32,共3页
North China Institute of Water Conservancy and Hydroelectric Power
基金
河南省教育厅自然科学研究计划项目(2011A170004)
郑州市科技攻关课题(0910SGYG21201-6)
关键词
标准化降水指数
旱涝
郑州
Standardized Precipitation Index（SPI）
droughts and floods
Zhengzhou City
