摘要
为了进一步研究全球气候变化下湘江流域的水文响应,采用Mann-Kendall法(M-K法)对湘江流域1960～2008年降水气温的时空变化趋势进行分析。结果表明,1960～2008年湘江流域的日平均气温普遍呈现显著上升趋势,日极小气温值的显著上升,其中以郴州为代表的东南部气温变化趋势尤为显著;除长沙站外,其余站点降水变化没有显著的上升或下降趋势。从年内分布来看,气温在4、5、6月份呈显著上升趋势,而降水则在1、2月份大部分站点呈现显著上升趋势。
In order to further study the hydrologic response of Xiangjiang River Basin under the background of global climate change, the trend of temporal and spatial changes of precipitation and temperature from 1960 to 2008 in the basin is obtained by using the Mann - Kendall method. The results reveal that the daily average temperature shows a significant increasing trend, and the daily minimum temperature increases obviously. The variation trend of temperature in the south - eastern part is obvious, es- pecially at Chenzhou Station. The precipitation at most stations does not have significant variation trend in the basin except for Changsha station. From the view of annual distribution, the temperature in April, May and June rises significantly, and the pre-cipitation in January and February is in an increasing trend at most stations.
出处
《人民长江》
北大核心
2013年第3期10-12,32,共4页
Yangtze River
基金
国家自然科学青年基金项目(51279138)
关键词
降水
气温
趋势分析
M—K法
湘江流域
precipitation
temperature
trend analysis
Mann-Kendall method
Xiangjiang River Basin
