VARIATIONS IN WATER AND SEDIMENT DISCHARGES OF MEDIAM AND SMALL RIVERS AND THEIR RESPONSE TO HUMAN ACTIVITIES: A CASE STUDY ON THE LUAN RIVER
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摘要: 基于1958-2008年滦河入海径流通量、泥沙通量及流域降水数据,采用线性趋势法和Mann-Kendall检验法来分析滦河入海水沙通量变化规律,结果表明:1958-2008年间,滦河流域年入海水沙通量显著减少,入海径流通量与泥沙通量时序均存在显著突变转折,突变发生于1980年前后,突变点出现时间与强烈人类活动介入时间相吻合,滦河入海水沙变化与流域人类活动影响密切相关。
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关键词:
- Mann-Kendall检验 /
- 突变点 /
- 人类活动 /
- 滦河
Abstract: This paper addresses the change in runoff and sediment fluxes through the Luan River into the sea based on the record at the Luanxian Hydrological Station for the period from 1958 to 2008. The Mann-Kendall statistic test was used to estimate the long-term trends of the runoff and sediment input with time. The results show that there is a sharp change in both annual runoff and sediment fluxes in the year of 1980. The change points are highly related to human activities in the Luan River basin. It means that the change points may indicate man-made events.-
Keywords:
- Luan River /
- Mann-Kendall test /
- change point /
- Human Activities
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