| 波浪扰动对太湖底泥磷释放影响模拟 |
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| 引用本文： | 丁艳青,朱广伟,秦伯强,王永平,吴挺峰,申霞,洪大林. 波浪扰动对太湖底泥磷释放影响模拟[J]. 水科学进展, 2011, 22(2): 273-278 |
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| 作者姓名： | 丁艳青 朱广伟 秦伯强 王永平 吴挺峰 申霞 洪大林 |
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| 作者单位： | 1.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 江苏, 南京, 210008; |
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| 基金项目： | 国家自然科学基金资助项目，江苏省自然科学基金太湖专项资助项目 |
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| 摘 要： | 为揭示波浪扰动对湖泊底泥磷释放的影响,在波浪水槽中模拟了不同波高情况下扰动对水体、水土界面、底泥间隙水的磷、溶解氧等的影响.结果显示,在大波扰动下,沉积物大量悬浮,水体总磷随之增加,溶解性磷增加却不显著;波浪扰动显著增加了水体和沉积物界面的溶解氧浓度,并增加了溶解氧在沉积物的侵蚀深度;波浪扰动降低了沉积物表层10 cm内间隙水中的磷浓度,而10 cm以下沉积物中间隙水中磷浓度基本保持不变.研究表明,波浪扰动可迅速增加水体中颗粒态的营养盐,但是对于溶解态营养盐,尤其是水体中活性磷浓度的影响,则受沉积物性质、水-沉积物间隙水磷浓度差,以及水-沉积物中氧含量等多方面因素的影响.
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| 关 键 词： | 浅水湖泊 波浪扰动 波浪水槽 磷释放 沉积物 反应活性磷 溶解氧 |
| 收稿时间： | 2010-03-25 |
Experimental study on the effect of wave disturbances on the phosphorus dynamics in shallow lakes |
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| DING Yan-qing,ZHU Guang-wei,QIN Bo-qiang,WANG Yong-ping,WU Ting-feng,SHEN Xia,HONG Da-lin. Experimental study on the effect of wave disturbances on the phosphorus dynamics in shallow lakes[J]. Advances in Water Science, 2011, 22(2): 273-278 |
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| Authors: | DING Yan-qing ZHU Guang-wei QIN Bo-qiang WANG Yong-ping WU Ting-feng SHEN Xia HONG Da-lin |
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| Affiliation: | 1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;3.Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | An experimental study was conducted in the water flume to investigate the effect of wave disturbances on the phosphorus releasing from the sediment in shallow lakes.The dissolved oxygen(DO) was measured every 5 seconds using an oxygen microelectrode sensor that is located at 1 cm above the sediment-water interface.Two wave amplitudes(2 cm and 10 cm) are used in the experiment.Results show that the strong wave disturbance can result in a rapid increase in suspended solids and total phosphorus concentrations.... |
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| Keywords: | shallow lake wave disturbance wave flume phosphorus releasing sediment soluble reactive phosphorus dissolved oxygen |
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