人民黄河Issue(1)：18-22,5.DOI:10.3969/j.issn.1000-1379.2015.01.005
黄河流域近50 a极端降水指数的时空变化
Temporal and Spatial Variation of Extreme Precipitation Indexes of the Yellow River Basin in Recent 50 Years
赵翠平 1陈岩 1王卫光 2郜志云1
作者信息
- 1. 环境保护部环境规划院，北京100012
- 2. 河海大学水文水资源与水利工程科学国家重点实验室，江苏南京210098
- 折叠
摘要
Abstract
Spatial and temporal patterns of changes in extreme precipitation were investigated by 10 extreme precipitation indices based on 80 meteorological stations′data of 1957—2008 period in the Yellow River basin,with the help of simple liner regression method,Mann-Ken-dall trend and RclimDex software. The results show that except Rx5DAY indicating significant negative trend and SDII revealing positive trend,the other eight indices display negative trend which are not significant. From the point of seasonal changes,Rx1DAY and Rx5DAY in summer and autumn have similar spatial features,the value of which is larger in spring and winter. It is learned that rainfall decreases year by year. All show that the trend of extreme precipitation indices are not significant and extreme precipitation events have difference in space and time in the Yellow River basin.关键词
时空变化/极端降水指数/黄河流域Key words
spatial and temporal variation/extreme precipitation indices/Yellow River basin分类
天文与地球科学引用本文复制引用
赵翠平,陈岩,王卫光,郜志云..黄河流域近50 a极端降水指数的时空变化[J].人民黄河,2015,(1):18-22,5.
