| 1956-2016年渭河支流葫芦河流域径流及降水的年际变化特征 |
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| 引用本文： | 王淑红,张钰,王大超,路贺,杜丽芳.1956-2016年渭河支流葫芦河流域径流及降水的年际变化特征[J].冰川冻土,2018,40(2):370-377. |
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| 作者姓名： | 王淑红 张钰 王大超 路贺 杜丽芳 |
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| 作者单位： | 兰州大学 资源环境学院,甘肃 兰州,730000;兰州大学 资源环境学院,甘肃 兰州,730000;兰州大学 资源环境学院,甘肃 兰州,730000;兰州大学 资源环境学院,甘肃 兰州,730000;兰州大学 资源环境学院,甘肃 兰州,730000 |
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| 基金项目： | 国家自然科学基金项目(41271092) |
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| 摘 要： | 研究河流径流量和流域降水量的变化特征，对区域水资源规划与开发利用具有重要意义。基于葫芦河干流上下游的两个主要控制水文站实测年径流量及其流域年降水量资料，运用标准距平累计曲线法、小波分析法和Mann-Kendall等方法，研究了葫芦河干流年径流量和年降水量的年际变化趋势、周期性和突变性。结果表明：葫芦河上下游年径流量变化趋势一致性较好，流域年降水量变化趋势与径流量变化趋势基本对应，均呈下降趋势，但径流减少的速率远大于降水减少速率，且下游径流量的减少速率比上游更快。葫芦河上下游径流量变化的大周期一致，但下游径流小周期的转换要比上游径流和流域降水更频繁，上下游径流量与其流域降水量变化周期的年份对应关系不好，径流变化的主周期和次周期均小于降水的变化周期。葫芦河下游年径流量在1988年发生了突变，而上游径流量和流域降水量均无明显的突变点。
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| 关 键 词： | 葫芦河流域 年径流量 年降水量 年际变化 |
| 收稿时间： | 2017-12-19 |
| 修稿时间： | 2018-03-31 |
Annual variation of the runoff and precipitation in the Hulu River basin,a tributary of the Weihe River,from 1956 to 2016 |
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| WANG Shuhong,ZHANG Yu,WANG Dachao,LU He,DU Lifang.Annual variation of the runoff and precipitation in the Hulu River basin,a tributary of the Weihe River,from 1956 to 2016[J].Journal of Glaciology and Geocryology,2018,40(2):370-377. |
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| Authors: | WANG Shuhong ZHANG Yu WANG Dachao LU He DU Lifang |
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| Institution: | College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | It is of great significance for the regional water resources planning and exploitation to study the variation characteristics of river runoff and basin precipitation. In this paper, study was carried out of the variation of the Hulu River main runoff and basin precipitation, such as annual variation, periodic property and mutation, using the method of standard departure accumulation curve method, wavelet analysis and Mann-Kendall so on, according annual runoff data and precipitation data of the two main hydrological control stations on the upper reaches and downstream of the Hulu River. The result showed that the variation of runoff in the upstream and downstream of the Hulu River manifests good uniformity, and the annual variations of the Hulu River upstream and downstream runoff are basically identical. Both runoff and precipitation are decreasing, however, the rate of runoff reduction is far greater than that of precipitation and the decrease rate of downstream runoff is more than that of upstream. From the perspective of varying periodic, the main runoff change cycles in the Hulu River upstream and downstream are consistent. But in the downstream runoff transformation is more frequent than that in the upstream. The relationship between the upstream and downstream runoffs is not so good. The main cycle and subcycle of runoff are less than the change period of precipitation. Besides, runoff and basin precipitation change cycles show little corresponding relationship, and the varying cycle of runoff is short than that of precipitation. Finally, the runoff of downstream of the Hulu River had a obviously mutation in 1988, but there was no obvious abrupt changes in upstream runoff and in precipitation of the whole basin. |
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| Keywords: | Hulu River basin annual runoff annual precipitation annual variability |
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