黄河天然径流量变化趋势及其影响分析

被引:38
作者
李春晖 [1 ,2 ]
郑小康 [1 ]
杨志峰 [1 ]
庞爱萍 [1 ]
沈楠 [1 ]
机构
[1] 北京师范大学环境学院水沙科学教育部重点实验室
[2] 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室
基金
教育部留学回国人员科研启动基金;
关键词
天然径流量; 趋势分析; mann-kendall方法; 黄河流域;
D O I
暂无
中图分类号
P333.1 [水量平衡];
学科分类号
081501 ;
摘要
选择黄河流域8个水文站点,采用mann-kendall方法,研究其1951—1998年的变化趋势,并确定突变点及其起始位置.结果表明:这些站点存在相同的趋势.年天然径流量除了兰州、河口镇和龙门外,都有显著的下降趋势,突变点在90年代的早期或中期,但是下降的趋势点不同.研究发现,降水存在类似的趋势,是径流量减少的主要原因.同时,人类活动也是径流量减少的重要原因.发展节水灌溉和实施南水北调是缓解水资源短缺的重要途径,但水资源供需矛盾在短期内依然存在.
引用
收藏
页码:80 / 85
页数:6
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