1、

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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2、

At the water-sediment interface, the concentrations of these elements had an obvious variation. In summer, Cr in the sediment had greater influence on the quality of overlying waters.

重金属元素的浓度在沉积物-水界面处变化明显,夏季沉积物中的Cr对上覆水体水质的影响较大。

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3、

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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4、

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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5、

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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6、

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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7、

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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8、

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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9、

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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10、

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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11、

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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12、

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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13、

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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14、

as the water rises, it encounters lower temperatures and less pressure from overlying ice, so it refreezes.

随着不断地上升,水遇到的温度较低,而且受到上层覆冰的压力较小,因而就冻结了。

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15、

and quantity of both the sand and water burst depend on overlying stratum structure and space disposition.

突水溃沙量的大小还取决于覆岩的结构及空间配置。

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16、

Aggressive percolating water from overlying Basalt or Tertiary mudstone is very important for the forming of fast dissolution kinetics in mature stage of karstification.

来自非可溶岩盖层内的具很强侵蚀性的裂隙水,对进入成熟演化阶段的裂隙系统快速溶蚀动力学过程的产生起重要作用,为石林快速发育创造条件。

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17、

The so called synclinal water-storing structure refers to syncline structure or tectonic basin which can concentrate and store the groundwater. And the feature of groundwater within these structures depends on hydrologic barrier overlying and the landform.

所谓向斜型蓄水构造是指能富集和储藏地下水的向斜构造或构造盆地,其地下水的补径排特征主要取决于上覆隔水岩层的覆盖条件和地形地貌条件。

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