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首页> 外文会议>2011 International Symposium on Water Resource and Environmental Protection >Spatial and temporal variation of monthly rainfall nonuniformity of the upper Yangtze basin
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Spatial and temporal variation of monthly rainfall nonuniformity of the upper Yangtze basin

机译：长江上游流域月降水非均匀性的时空变化

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摘要

Apportionment entropy, defined by Shannon's information entropy theory, was applied to analyze the monthly rainfall nonuniformity of the upper Yangtze basin within a year. The spatial variability analysis indicates that the intra-annual monthly apportionment of rainfall is relatively even in Wu sub-basin, while rainfall is relatively aggregate in the lower Jinsha sub-basin and the middle Jialing sub-basin. In temporal domain, the Mann-Kendall method was applied to analyze the change trend of the intra-annual nonuniformity. For 17 meteorological stations, the intra-annual monthly apportionment of rainfall trended to evenness, while that trended to aggregate for only 2 meteorological stations. For the other 29 meteorological stations, no significant change trend of the intra-annual monthly rainfall nonuniformity was observed.
机译：运用香农信息熵理论定义的分摊熵，分析了长江上游流域一年内的月降水非均匀性。空间变异性分析表明，Wu子流域的年降水量年均分配相对均匀，而金沙江下游和嘉陵河中流域的降雨相对集中。在时域上，采用Mann-Kendall方法分析年内非均匀性的变化趋势。对于17个气象站，年内月度降雨分配趋势趋于均匀，而只有2个气象站的趋势趋于累积。对于其他29个气象站，未观察到年内月降水量不均匀性的显着变化趋势。

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