长江科学院院报2018，Vol.35Issue(2)：8-12,50,6.DOI:10.11988/ckyyb.20160966
1982-2014年汀江流域长汀段水沙演变规律分析
Evolution of Runoff and Sediment Load in Changting Segment of Tingjiang River Watershed from 1998 to 2014
摘要
Abstract
The characteristics of runoff and sediment evolution in the Tingjiang River watershed under climate change and human activities are analyzed by means of cumulative anomalies and Morlet wavelet analysis based on measured runoff and sediment data in Changting segment from 1982 to 2014.Results indicate that runoff and sediment load distribution are both uneven within the years,with runoff mainly concentrated from March to June while sediment from March to June and in August;runoff and sediment load experienced twice abrupt changes during 1982-2014,once in 1991,and the other in 2000.Runoff and sediment load reduced from 1982 to 1991,and increased in the next 8 years from 1992 to 2000,and then reduced again from 2001 to 2014.The time series of runoff and sediment load during 1982-2014 demonstrated significant cyclicality,with the first principal cycle of runoff and sediment of 44 and 18 months,respectively.关键词
汀江流域/径流量/输沙率/累积距平法/小波分析Key words
Tingjiang river watershed/runoff/sediment load/cumulative anomalies/wavelet analysis分类
天文与地球科学引用本文复制引用
王振平,汪小钦,林敬兰,陈善沐..1982-2014年汀江流域长汀段水沙演变规律分析[J].长江科学院院报,2018,35(2):8-12,50,6.基金项目
福建省科技重点项目(2015N0025) （2015N0025）
“十三五”国家科技支撑课题项目(2013BAC08B01) （2013BAC08B01）
中央引导地方科技发展专项(2017L3012) （2017L3012）
