摘要
为对乌江流域水文变化趋势特征及其主要驱动力进行分析,采用Mann-Kendall非参数检验,滑动T检验和累积曲线等方法研究了乌江武隆站1965~2017年输沙量、径流量、降水量及其变化趋势与突变特征,采用累积量斜率变化率法定量计算了乌江流域气候变化和人类活动对输沙量与径流量变化的贡献率,并通过河流影响因子法(River Impact,RI)对乌江水沙情势改变度进行了分析。结果表明:乌江流域径流量、降水量、输沙量均呈下降趋势,其中输沙量的下降幅度最为显著。导致径流量和输沙量下降的主要驱动因素分别是气候变化与人类活动。乌江流域径流量发生轻度改变而输沙量发生严重改变。
In order to analyze the characteristics of hydrological trend and its main driving forces in Wujiang River Basin,Mann-Kendall non-parametric test,sliding t-test and accumulation curve were used to study the variation trend and abrupt change characteristics of sediment discharge,runoff and sediment discharge at Wulong Station from 1965 to 2017.The cumulant gradient change rate method was used to quantitatively analyze the contribution rate of climate change and human activities to sediment discharge and runoff change in Wujiang River Basin.River Impact Factor(RI)was used to analyze the change degree of water and sediment regime in Wujiang River.The results showed that the runoff,rainfall and sediment transport in the Wujiang River Basin all displayed a decreasing trend.The decreasing rate of sediment transport was the most significant.Climate change and human activities were the main driving factors for the decrease of runoff and sediment change.The runoff in Wujiang River Basin changed slightly but the sediment discharge changed seriously.
作者
郭文献
赵瑞超
付体江
古今用
GUO Wenxian;ZHAO Ruichao;FU Tijiang;GU Jinyong(College of Water Resources,North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Guizhou Provincial Water Conservancy Research Institute,Guiyang 550000,China)
出处
《人民长江》
北大核心
2021年第9期71-78,共8页
Yangtze River
基金
国家自然科学基金项目(51679090,51609085,51779094)
2016年度河南省高校科技创新人才支持计划(16HASTIT024)
2016年河南省科技攻关项目(162102110015)
华北水利水电大学研究生教育创新计划(YK220-02)
贵州省水利厅2020年度水利科技项目(KT202008)。
关键词
水沙情势
水文改变度
累积量斜率变化率法
乌江流域
气候变化
water and sediment regime
hydrologic alteration
slope change rate method of cumulant
Wujiang River Basin
climate change
