摘要
近年来黄河中游区间入黄水沙量发生了明显变化,对此变化特性需要开展研究。依据黄河中游干流水文站实测资料将黄河中游河口镇至潼关区间分为头道拐-吴堡、吴堡-龙门、龙门-潼关3个区域,分析各区域水沙量的变化趋势及入黄贡献率变化。结果表明:1958-2016年头道拐站及三个区域的年径流和年输沙量均呈显著减小的变化趋势。2000年后头道拐入黄水量贡献率增大了6.8%,中游区间三个区域的水量贡献率均减小,减小值为1.9%~2.5%;头道拐的沙量贡献率增加了7.4%,头道拐-吴堡区间的沙量贡献率减小了22.5%,吴堡-龙门及龙门-潼关区间的沙量贡献率增加值分别为5.1%和10%,黄河中游区间入黄沙量贡献率减小了7.4%。头道拐站的入黄水、沙量贡献率基本一致,黄河中游区间入黄沙量贡献率的减少是由区间上部区域引起的。河潼区间的输沙量与径流量相关性较好。
In recent years, the contribution rate of water and sediment into the middle reaches of the Yellow River has changed significantly. According to the observed data of hydrological station in the middle reaches of the Yellow River, the middle reaches of the Yellow River is divided into three regions of Toudaoguai-wubao, Wubao-longmen, Longmen-tongguan. The variation of contribution rate of water and sediment entering the Yellow River is analyzed in different periods. The results show that the runoff and sediment load in Toudaoguai Station and three regions showed a decreasing trend from 1958 to 2016 year. After 2000 year, the water contribution rate of the toudaoguai increased by 6.8%, the water contribution rate decreased by 1.9%~2.5% in three regions. The contribution rate of sediment load for Toudaoguai increased by 7.4%.The contribution rate of sediment load in the up region decreased by 22.5%. The contribution rate of sand load for the middle and lower reaches increased by 5.1% and 10% respectively. There is a significant correlation between sediment transport load and runoff in the middle reach of the Yellow River.
作者
陈界仁
任磊
任莎莎
CHEN Jie-ren;REN Lei;REN Sha-sha(College of Water Conservancy and Hydropower Engineering, Hohai University,Nanjing 210098,China)
出处
《中国农村水利水电》
北大核心
2019年第11期1-4,9,共5页
China Rural Water and Hydropower
基金
国家重点研发计划资助项目(2016YFC0402501,2018YFC0407204)
关键词
黄河中游区间
变化趋势
入黄水沙贡献率
相关性
the middle reaches of the Yellow River
changing trend
contribution rate of water and sediment to the Yellow River
correlation analysis
