摘要
采用非参数Mann-Kendall分析了1964-2010年青阳岔站、李家河站和白家川站径流和泥沙负荷的时空变化。结果显示:自1990年以来,无定河流域泥沙的年际和年内分布发生了显著变化,青阳岔站泥沙和径流量发生显著增加,而李家河站和白家川站的泥沙流量却发生了减少。总体而言,年内径流分布格局一直保持稳定。无定河的径流和泥沙负荷的时空变化归因于水电站的建设、土地利用变化和降水频率和强度。研究结果可为无定河流域环境保护和生态修复提供参考。
The no parametric Mann-Kendall is analyzed from 1964 to 2010 young Yang bifurcation and Bai Jiachuan Li Jiahe stand stand spatial and temporal variations of runoff and sediment load results show that since 1990,the Wuding river basin sediment distribution inter-annual and years changed dramatically,Qingyang branch station sediment and runoff increased significantly,whereas the sediment flow Li Jiahe station and Bai Jiachuan station reduce overall,happened years runoff distribution pattern have been stable spatial and temporal variations of the Wuding river runoff and sediment load due to the construction of Hydraulic electric generating station and precipitation frequency and intensity of land use change The results can provide reference for environmental protection and ecological restoration in Wuding River basin.
作者
高夏晖
高雨轩
GAO Xia-hui;GAO Yu-xuan(Yulin Hydrology and Water Resources Survey Bureau of Yellow River Conservancy Commission,Yulin 719000,Shaanxi,China;Yan'an Hydrology and Water Resources Survey Bureau of Yellow River Conservancy Commission,Yan'an 716000,Shaanxi Province,China)
出处
《地下水》
2020年第6期167-169,共3页
Ground water
作者简介
高夏晖(1970-),男,陕西定边人,工程师,主要从事水利工程及水文水资源方面工作。
