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1·How are sediment load in river? It is the objective mark for soil erosion in the valley.

河流输沙的情况如何，是最为客观反映该流域内土壤侵蚀状况的标志。

2·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。

3·The variation of river sediment load is considerably affected by rainfall and underlying surface.

河流输沙量的变化受流域降水和下垫面影响很大。

4·The released flow from reservoirs carries less sediment load of bed material than pre? dam periods.

建坝后水库下泄水流挟带的床沙质含沙量减少，坝下游河床出现冲刷。

5·According to the spectrum analysis, the sediment load also fluctuated at the periodicity of 3a and 10a.

根据功率谱分析，入海泥沙还存在着3年和10年左右的周期性波动。

6·Therefore it also brings out new river-trained theory of design sediment load and integrated regulation of water-sediment.

开始蓄水拦沙运用 ，水库严重淤积回水迅速上延 ，引发设计输沙量和水沙综合调节治河新理论。

7·The parameter of the model is decided and a computing program that suits to the river with the different sediment load is given.

确定了高含沙河流模型的参数，给出了适用高低含沙河流的计算程序。

8·Even though these rivers carry a significant sediment load in suspension, the density of the sediment-laden water is rarely at or above the density of seawater.

尽管这些河流带着大量悬浮的颗粒，这带有沉淀物的水的密度仍仅仅达到或者低于海水的密度。

9·In the construction of barrage diversion works on alluvial rivers with heavy sediment load, complete systematic experience and design criteria are still lacking.

在平原多沙河流上修建引水枢纽，缺乏较系统完整的经验和指导原则。

10·Periodical analysis showed that abrupt change of sediment load happened in 1968 and 1984, which divided the variation process of river sediment load into three stages.

中国主要河流入海泥沙还具有明显的三个阶段变化特征，即分别在1968年和1984年前后发生了突变。