院报 ›› 2018, Vol. 35 ›› Issue (2): 8-12.DOI: 10.11988/ckyyb.20160966

• 江湖泥沙与治理 • 上一篇    下一篇

1982—2014年汀江流域长汀段水沙演变规律分析

王振平1a,1b,汪小钦1a,1b,林敬兰2,陈善沐2   

  1. 1.福州大学 a.空间数据挖掘和信息共享教育部重点实验室;b.福建省空间信息工程研究中心,福州 350002;
    2.福建省水土保持试验站,福州 350003
  • 收稿日期:2016-09-18 出版日期:2018-02-01 发布日期:2018-03-01
  • 通讯作者: 汪小钦(1972-),女,福建古田人,研究员,博士,主要研究方向为资源环境遥感应用。E-mail:wangxq@fzu.edu.cn
  • 作者简介:王振平(1990-),男,湖北孝感人,硕士研究生,主要从事环境与自然资源遥感应用方面的研究。E-mail:wzpfcb@163.com
  • 基金资助:
    福建省科技重点项目(2015N0025);“十三五”国家科技支撑课题项目(2013BAC08B01);中央引导地方科技发展专项(2017L3012)

Evolution of Runoff and Sediment Load in Changting Segment ofTingjiang River Watershed from 1998 to 2014

WANG Zhen-ping1,2, WANG Xiao-qin1,2, LIN Jing-lan3, CHEN Shan-mu3   

  1. 1.Key Lab of Spatial Data Mining & Information Sharing of Ministry of Education, Fuzhou University,Fuzhou 350002, China;
    2. National Engineering Research Center of Spatial Information Technology,Fuzhou University, Fuzhou 350002, China;
    3. Experimental Station of Soil and Water Conservation inFujian Province, Fuzhou 350003, China
  • Received:2016-09-18 Online:2018-02-01 Published:2018-03-01

摘要: 为掌握气候变化和人类活动干扰条件下汀江流域的水沙演变规律,基于汀江流域长汀段1982—2014年实测水沙资料,运用累积距平法和Morlet小波变换分析了该流域的水沙变化特性。结果表明:径流量和输沙率年内分配都不均匀,径流量主要集中在3—6月份,输沙率主要集中在3—6月份及8月份;径流量和输沙率在1982—2014年的时间序列上发生2次突变,突变拐点为1991年和2000年,1982—1991年为水沙减少的阶段,1992—2000年为水沙增多的阶段,2001—2014年又为水沙减少的阶段;径流量和输沙率在1982—2014年的时间序列上均表现出显著的周期性,径流量的第一主周期为44月,输沙率的第一主周期是18月。研究结果可为汀江流域水资源的合理开发利用和管理提供科学依据。

关键词: 汀江流域, 径流量, 输沙率, 累积距平法, 小波分析

Abstract: The characteristics of runoff and sediment evolution in the Tingjiang River watershed under climatechange 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.

Key words: Tingjiang river watershed, runoff, sediment load, cumulative anomalies, wavelet analysis

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