悖牛川径流年内分配变化规律研究
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国家自然科学基金青年项目"煤矿开采对地表径流影响机理及评价模型研究"(41201020)


Change of Annual Runoff Distribution in Beiniuchuan River Basin
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    摘要:

    [目的] 分析悖牛川径流年内分配变化特征,为流域水资源规划、管理和开发利用提供科学依据。[方法] 根据悖牛川控制性水文站-新庙站1966-2010年实测月径流资料,分析年内分配不均匀系数、完全调节系数、集中度(期)等特性。并采用累积滤波器和Mann-Kendall秩相关法诊断各月径流量的变化趋势。[结果] (1)总体上,悖牛川径流年内分配呈双峰型分布,其峰值分别出现在3和8月。径流年内分配很不均匀,8月份径流量达到最大值,占年径流量的37.63%;1月份降到最低值,仅占到年径流量的0.65%;(2) 20世纪60-70年代的不均匀性和集中程度最大,80年代最小。最大径流出现在7月中下旬到8月上中旬,相对比较集中;(3)对于1966-2010年系列,各月径流量都处于显著减小的趋势。[结论] 受气候和人类活动的影响,悖牛川月径流量年内分布不均且均呈现减少趋势。

    Abstract:

    [Objective] Distributional changes of annual runoff in Beiniuchuan River basin were studied to provide a scientific basis for water resource planning, management and exploitation.[Methods] Based on the observed monthly streamflow in Xinmiao station from 1966 to 2010, annual distributional unevenness and concentration degree were calculated. Then Mann-Kendall test and cumulative filter method were employed to detect the trend of intra-annual runoff.[Results] (1) Generally, seasonal runoff distribution was bimodal with two peak values in August and March. The annual runoff distribution was very uneven with its maximum in August, which accounted for 37.63% of annual runoff. The minimum runoff in January only accounted for 0.65% of it.(2) The unevenness and concentration degree of runoffs in 1960s and 1970s reached the maximum, and they hit the lowest in 1980s. The maximum runoff occurred in late July to mid-August, relatively concentrated.(3) Monthly runoff had an obvious declining trend from 1966 to 2010.[Conclusion] Resulted from climatic change and human activity, the annual runoff showed an uneven distribution and the monthly runoff had a declining trend.

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熊新芝,郭巧玲,孙斌.悖牛川径流年内分配变化规律研究[J].水土保持通报,2015,35(6):335-340

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  • 收稿日期:2014-09-17
  • 最后修改日期:2014-11-16
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  • 在线发布日期: 2016-04-05
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