新疆阿克苏河流域年径流时序特征分析
Analysis on the Characteristics of Runoff Time Series in Akesu Basin
查看参考文献10篇
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文摘
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阿克苏河是塔里木河的主要支流,依据阿克苏河流域内5个代表站的40余年年径流实测资料,选取多种径流统计参数,分析流域范围内不同径流补给来源的径流年内分配规律和多年变化特征.结果表明:阿克苏河流域径流补给具有垂直地带性和多样化特点,径流时序特征与径流的补给来源有密切关系;径流年内分配极不均匀,集中程度高;而径流的多年变化变差系数小,丰、枯频率密度近似正态分布,无特大丰水年和枯水年,径流量多年变化趋势比较稳定. |
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其他语种文摘
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Akesu River is one of the largest rivers in northwest of China. It is the main tributary of Tarim River, whose upper branches are in the territory of Kirghizstan. Akesu basin lies in arid and semi-arid region of China, and it has typical hydrographical characteristics of inland rivers in northwest of China. Using forty years' annual discharge at five representative gauging stations in Akesu basin, this paper presents several runoff statistical parameters, namely varia-tion coefficient, concentration ratio, concentration period, kurtosis, wet-diy transformation ratio, and the curve of difference accumulation and probability density. It is the fundamental purpose of this paper to analyze annual distribution and change of discharge from year to year with dif-ferent runoff-supplying sources in Akesu basin. The result shows that the runoff-supplying sources in Akesu basin have vertical zonality and diversification .The characteristics of annual discharge in Akesu Basin have close relations with runoff-supplying sources. The allocation of discharge is extremely uneven, and has a quite high concentration within one year. On the other hand, for many years, variation coefficients of annual discharge have much lower value than oth-er rivers in south of China. The high and low flow years alternate in these years, and the proba-bility distribution approximates to normal distribution. There are not enormously wet and dry years, and the tendency of annual discharge change is relatively steady. |
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来源
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地理科学进展
,2005,24(1):87-96 【核心库】
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关键词
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阿克苏
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径流补给来源
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年径流
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径流时序特征
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地址
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中国科学院地理科学与资源研究所, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-6301 |
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学科
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地球物理学 |
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基金
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国家自然科学杰出青年基金
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世界银行项目
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文献收藏号
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CSCD:1993797
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