摘要
根据2000~2019年鉴江干流化州、高州站的实测径流量和年降雨量资料,采用Mann-Kendall趋势检验、双累积曲线、Pearson分析等方法,分析近20年来鉴江径流的变化趋势。研究结果显示,2008、2012、2013年存在突变点,为降雨造成径流量增大;各站年径流量和年降雨量长期变化趋势稳定,符合幂函数关系,Pearson相关系显著。
According to the measured runoff and annual rainfall data of Huazhou and Gaozhou stations,the two main control hydrological stations of Jianjiang River from 2000 to 2019,the trend change of Jianjiang River runoff in the past 20 years is analyzed by means of Mann Kendall trend test method,double cumulative curve method and Pearson correlation analysis.The results show that mutation points in 2008,2012 and 2013 caused the increase of runoff.The long-term change trend of annual runoff and annual rainfall at each station is in line with power function,and Pearson correlation is significant.
作者
张义宇
ZHANG Yi-yu(Hydrological Bureau of Maoming,Maoming,Guangdong 525000,China)
出处
《广东水利电力职业技术学院学报》
2020年第3期14-16,45,共4页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
关键词
径流量
降雨量
鉴江干流
runoff
rainfall
the main stream of Jianjiang River
