中国农业大学学报2017，Vol.22Issue(9)：133-144,12.DOI:10.11841/j.issn.1007-4333.2017.09.17
韩江流域近50年极端气候事件的时空变化特征
Temporal and spatial characteristics of extreme temperature and precipitation events in Hanjiang River Basin over the past 50 years
摘要
Abstract
The aim of this study is to understand the change rules and tendencies of extreme climate events of Hanjiang River Basin located in hot and humid mountain region and to provide a scientific basis for the reduction of meteorological disasters prevention.Based on daily data for temperature and precipitation from China meteorological data service sharing network and Guangdong 13 meteorological stations in Hanjiang River Basin,the spatio-temporal changes features of extreme temperatures and precipitation from 1965 to 2014 in China,which were related directly to vegetation growth of water hot conditions and cold dry disaster,were investigated by using extreme event defined method,linear tendencies,inverse distance weighting spatial interpolation and rescaled range analysis.The results showed that:1) The extreme high temperature event displayed significant upward trend and extreme low temperature event showed significant downward trend,which reflect the climate warming trend and had a good consistency in Hanjiang River Basin;2) The extreme precipitation index increased with no significant change trend over the past 50 years,and the level index of extreme precipitation increased faster than the intensity index;3) the spatial distribution of extreme precipitation indices showed some differences,but its distribution pattern was "Gradually decreasing from northeast to Southwest"on the whole;4) The rescaled range analysis indicated that the future climate tendency of becoming drier or metter remained uncertain.It is very necessary to actively response to the plausible extreme climate sceuarios and to make timely adjustment to the layout and structure of agricultural production.关键词
极端气温/极端降水/变化特征/趋势/韩江流域Key words
extreme temperature, extreme precipitation/change characteristics/tendency/Hanjiang River Basin分类
天文与地球科学引用本文复制引用
万露文,张正栋,李英杰,张杰,叶晨..韩江流域近50年极端气候事件的时空变化特征[J].中国农业大学学报,2017,22(9):133-144,12.基金项目
国家自然科学基金项目(41471147) （41471147）
