overlying water

The results show: the sediments can uptake phosphate from the overlying water with high mass concentration, but the rate and quantity of uptake were different in different conditions;

研究结果表明：沉积物能够吸收上覆水中高质量浓度的磷酸盐，但吸收量和吸收速度随环境条件的不同而不同；

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when sediment environmental conditions changed, the heavy metal in sediment will release again and contaminate the overlying water.

当底泥环境条件发生改变时，束缚于底泥中的重金属就会重新释放污染上覆水水质。

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effects of illumination on overlying water quality and on phosphate adsorption by sediment

光照对水环境变化和沉积物吸收磷酸盐的影响

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effects of dissolved oxygen on the changes of overlying water quality and the uptake of phosphate by sediment

溶解氧对水质变化和沉积物吸磷过程的影响

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influence of dredging on self-purification ability of overlying water

疏浚对影响上覆水体自净能力的研究

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analysis on influence of sod laboratory measurement caused by different overlying water

不同上覆水对SOD实验室测定影响分析

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phosphorus fractions and vertical profiles in sediment core and overlying water of donghu lake

武汉东湖上覆水和沉积物中磷形态的垂直分布特征

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Samples of sediment, overlying water, pore water, and benthic invertebrate were collected at13 stations along a typical municipal polluted river in the Pearl River Delta.

研究区域为珠江三角洲一条典型城市污染河道，采集了13个站位沉积物、上覆水、间隙水及底栖动物样品进行分析。

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variation of nitrogen and phosphorus concentration in water-sediment system and influence of overlying water on the algae growth

沉积物-水系统中氮磷变化与上覆水对藻类生长的影响

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influence of dredging on releasing pollutants from sediment to overlying water

疏浚对影响底泥向上覆水体释放污染物的研究

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effects of overlying water properties on sorption of organic pollutants in sediments

上覆水性质对沉积物吸附有机污染物能力的影响

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The results are described as follows: 1. The study suggests that the distribution characteristics and existing forms of nitrogen phosphorus in the overlying water and sediments of Hulun lake, indicating the phosphorus is a limited factor in eutrophication. 2.

本研究取得了如下主要认识：1.确定了呼伦湖上覆水-沉积物系统中氮、磷空间分布特征及赋存形态，并初步判定了该湖富营养化的限制因子。

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