| 白龙江流域上游径流年内分配变化规律分析 |
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| 引用本文： | 田黎明,齐识,马金珠,张鹏,赵艳萍,宁娜.白龙江流域上游径流年内分配变化规律分析[J].水文,2012(4):82-87. |
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| 作者姓名： | 田黎明 齐识 马金珠 张鹏 赵艳萍 宁娜 |
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| 作者单位： | 兰州大学西部环境与气候变化研究院 |
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| 基金项目： | 国家科技支撑计划课题(2011BAK12B05) |
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| 摘 要： | 在气候变化与人类活动双重影响下,河川径流的年内分配特征随着发生变化。本文根据白龙江上游4个站点的实测月径流量资料,分析了年内分配不均匀性,集中程度与变化幅度等指标。结果表明:在1965~1969年、1971~1984年和2002~2006年,径流年内分配不均匀性较强;白龙江上游集中度较小,集中度随时间的增加均呈现降低趋势。流域自上游向下游,在不同年代集中期均表现为逐渐缩短的变化趋势。Cm、Cm-max和ΔR随时间增加而减小,Cm-min随时间增加而增大。总体上看,随着时间的推移,白龙江上游径流年内分配不均匀性越来越低,逐渐由不均匀向相对均匀转变。
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| 关 键 词： | 白龙江 径流 年内分配 |
Changes of annual runoff distribution in Upper Bailongjiang River |
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| TIAN Liming,QI Shi,MA Jinzhu,ZHANG Peng,ZHAO Yanping,NING Na.Changes of annual runoff distribution in Upper Bailongjiang River[J].Hydrology,2012(4):82-87. |
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| Authors: | TIAN Liming QI Shi MA Jinzhu ZHANG Peng ZHAO Yanping NING Na |
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| Institution: | (Research School of Arid Environment & Climate Change,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | With the influence of climate change and human activities,annual distribution of stream flow has been changed.Based on mean monthly runoff of the 4 stations in the upper Bailongjiang River,in this paper,3 indexes including non-uniformity,concentration and amplitude of variation of annual runoff distribution were analyzed.The results show that non-uniformity of annual runoff distribution is strong during 1965-1969,1971-1984 and 2002-2006.The concentration ratio is small and it significantly reduce as time goes by in the upper Bailongjiang River.From upstream to downstream,the concentration period is gradual shortening in different years.Cm,Cm-max and ΔR decrease as time going,while Cm-min increase with the time passing.Overall,non-uniformity of annual runoff distribution becomes lower and lower,which gradually transform from non-uniformity to homogeneity in process of time in the upper Bailongjiang River. |
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| Keywords: | Bailongjiang River runoff annual distribution |
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