...键词: 水沙情势; 变化规律; 多时间尺度; 趋势分析; 长江上游干流 [gap=1625]Key words: main stream; runoff and sediment load; multiple time scales; trend; upper reaches of Yangtze River ..
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The variations of runoff and sediment load of the basin are caused mainly by human activities.
流域内水沙变化主要是人类活动引起。
In addition, the runoff and sediment load exhibits an obvious decrease tendency in recent years, but it is possible that sediment yield may increase sharply under a same intensive rainstorm.
近年来窟野河水沙量有显著减少的趋势，但存在稀遇暴雨下的增沙可能。
On the basis of observation and survey datum carried out in small watershed where is or not been mining, the influence of coal mining and related human activities on runoff and sediment load.
利用布设在开矿与非开矿小流域的观测和调查资料，对比分析了开矿对小流域径流、泥沙的影响。
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