文章摘要
丁倩倩,刘友存,焦克勤,边晓辉,刘燕.赣江上游典型流域水沙过程及驱动因素[J].水土保持通报,2018,38(4):19~26,33
赣江上游典型流域水沙过程及驱动因素
Changes and Driving Factors of Runoff and Sediment Yield of Typical Watershed in Upper Reaches of Ganjiang River
投稿时间:2018-02-24  修订日期:2018-04-07
DOI:10.13961/j.cnki.stbctb.2018.04.004
中文关键词: 降水量  径流量  输沙量  驱动因素  赣江上游
英文关键词: runoff  sediment yield  driving factors  the upper reaches of Ganjiang River
基金项目:国家自然科学基金项目“高山寒区流域侵蚀沉积与痕量元素迁移及其交互作用”(41471001);赣州市重点研发计划项目(赣市财教字[2017]179号)、江西理工大学“清江学者”拔尖人才科研启动项目(JXUSTQJBJ2017002)
作者单位E-mail
丁倩倩 江西理工大学 建筑与测绘工程学院, 江西 赣州 341000  
刘友存 江西理工大学 资源与环境工程学院, 江西 赣州 341000 liuyoucun@hotmail.com 
焦克勤 中国科学院 西北生态环境资源研究院, 甘肃 兰州 730000  
边晓辉 江西理工大学 建筑与测绘工程学院, 江西 赣州 341000  
刘燕 江西理工大学 资源与环境工程学院, 江西 赣州 341000  
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中文摘要:
      [目的]对赣江上游典型流域水沙过程及驱动因素进行分析,为该区域土壤侵蚀治理、土地利用和功能调整等工作提供科学依据。[方法]根据桃江流域1980—2015年逐日水沙实测资料,运用Mann-Kendall突变检验法及其它统计方法分析了桃江流域的水沙变化特征,结合水文法、双累积曲线法对降水量、径流量和输沙量三者之间的相互关系进行探讨,并以此来确定桃江流域水沙变化的驱动因素。[结果]①桃江流域输沙量呈现显著减小趋势,突变时间出现在2005年,径流量同样出现递减趋势,但其递减趋势不甚显著,其递减时间开始于2003年。②径流量和输沙量突变开始的时间不同,水沙特性的划分阶段亦不同:径流量可划分为1980—2002年和2003—2015年2个阶段,输沙量可划分为1980—2004年和2005—2015年两个阶段。③桃江流域径流量在2003—2015年时段内年均减少量为7.26×1010 m3,输沙量在2005—2015年时段内年均减少量为8.82×107 t。④人类活动引起的减水量为5.77×1010 m3/a,占总减水量的76.8%;减沙量为8.44×107 t/a,占总减沙量的95.7%。[结论]研究区内水沙均呈减少趋势,其中输沙量减少显著。降水与人类活动引起的减水减沙量的比值约为4∶1。
英文摘要:
      [Objective] Studying the processes and driving factors of runoff and sediment in a typical watershed in the upper reaches of Ganjiang River, to provide bases for soil erosion control, land use and function adjustment in this area.[Methods] Daily runoff, sediment and precipitation data from 1980-2015 were used in this study. The characteristics and relationships between precipitation, runoff and sediment yield were analyzed by using Mann-Kendall method, hydrological method and double mass curve, from this the driving factors of runoff and sediment yield changes were determined.[Results] ① There was a significant decrease in sediment yield, while an abrupt change appeared in 2005. From 2003, the runoff yield also showed a decreasing but not apparent trend. ② Runoff and sediment yield were different in term of the beginning time of the abrupt change. The change of runoff was divided into two phases, which were from 1980 to 2002 and from 2003 to 2015, while the sediment yield had two change phases of 1980-2004 and 2005-2015. ③ The decrease value of annual average runoff during 2003-2015 was 7.26×1010 m3. The decrease value of average annual sediment yield during the period of 2005-2015 was 8.82×107 t. ④ The runoff reduction volume caused by human activities was 5.77×1010 m3/a, accounting for 76.8% of the total; the sediment decrease was 8.44×107 t/a, accounting for 95.7% of the total sediment yield.[Conclusion] Runoff and sediment yield were all reduced, and the amount of sediment yield was reduced significantly. Either for runoff reduction or for sediment discharge, the ratios caused by precipitation and human activities was about 4:1.
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