sediment and water

During the operation of storing water and retaining sediment, serious deposition in the reservoir leads to backwater level rising rapidly. 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。

The study of slope length effect on runoff, sediment yield and dynamics process is the breakthrough to reveal erosion mechanism on slope and is the basic problem to solve sediment transport mechanics, soil erosion and soil and water conservation.

坡面径流侵蚀产沙及动力学过程的研究是揭示坡面侵蚀产沙机理的突破点，是泥沙运动力学、土壤侵蚀和水土保持学中亟待解决的基础问题。

The sediment settled and the water was clear.

杂质沉淀后,水变清了.

Study on the Toxicity of Sediment and Water of Suzhou Creek

苏州河底泥及河水生物毒性的研究

Due to extent areas in medium-large basins, their erosion, transport, sediment process crisscrossed, and natural processes in basin rounded soil and water loss system became complicated, time and spatial variability of sediment yield factors enhancing.

中大流域由于流域面积很大，使得流域的侵蚀、输移、沉积过程交错，流域的这一完整的水土流失体系的自然过程复杂化，侵蚀产沙因子时间和空间的变异性很大。

The concentrations of ammonia and nitrate in water-sediment interface varied seasonally.

水 - 沉积物界面氨氮和硝态氮含量呈现明显季节性变化.

For the control of the Yellow River in the years to come, it is required to study the change in possibility of annual and flood season water flow, variation range of sediment and water reduction, and the feasibility to increase water flow in flood season.

对于今后黄河的治理，需要研究下游的年均水量及汛期水量的可能变化，减沙量与减水量的变化幅度和增加下游汛期水量的可行性。

The concentrations of ammonia and nitrate in water-sediment interface seasonally.

水 - 沉积物界面氨氮和硝态氮含量呈现明显季节性变化.

Under the same proportion of water and sediment the average surface release of nitrogen and phosphorus in the sediment under the condition of anaerobic is obvious higher than that under the condition of aerobic;

在相同水土比条件下，厌氧条件下底泥N、P营养的平均面释放明显高于好氧条件；

The research is helpful to our understanding of effects of Vallisneria asiatica on the environment of water and the possible diurnal variation of phosphorus release in sediment.

试验结果为进一步研究沉水植物对水体中环境因子影响的日变化特征和影响机理，以及底泥磷释放可能存在的日变化具有一定的参考价值。

Effect of training levees on movement of water flow and sediment in Yellow River estuary

河口导堤对水沙运动影响的二维数值模型

Sediment quality in waters not only affect the benthic organism, but also has close relation with the water quality due to the frequent pollutant interchanges between the sediment and overlaying water. The polluted sediment often becomes the potential source to pollute waters.

水体沉积泥沙质量不仅对底栖生物具有影响，而且由于泥沙与上覆水体相互间频繁的交换作用，泥沙质量与水体水质也有着密切的关系，污染的泥沙往往会成为水域的潜在污染源。

DDTs Transport Between Sediment and Water in the Mainstream of Haihe River in the Urban Area

DDTs在海河干流市区段沉积物/水间迁移行为研究