| 溶氧·水温和水流对东太湖沉积物中氮·磷释放的影响 |
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| 引用本文： | 徐升宝,谷孝鸿,蔡春芳,叶元土,施陈江,杨超. 溶氧·水温和水流对东太湖沉积物中氮·磷释放的影响[J]. 安徽农业科学, 2011, 0(9): 5175-5177,5366 |
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| 作者姓名： | 徐升宝 谷孝鸿 蔡春芳 叶元土 施陈江 杨超 |
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| 作者单位： | 苏州大学医学部基础医学与生物科学学院江苏省水产动物营养重点实验室;中国科学院南京地理与湖泊研究所; |
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| 基金项目： | 水体污染控制与治理科技重大专项(2008ZX07101-012); 中国科学院知识创新工程项目(KZCX1-YW14) |
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| 摘 要： | [目的]研究东太湖底泥内源污染强度。[方法]通过室内模拟试验,分析环境因子（溶解氧、水温、水流）对东太湖底泥中N、P释放的影响。[结果]在不同溶解氧（DO）和水温条件下,上覆水中N、P浓度都随时间呈线性升高。DO浓度为3.0、5.5、8.0 mg/L时,N的平均释放速率分别为443、239、153 mg/（m2×d）,P的平均释放速率分别为33.2、17.8、12.1 mg/（m2×Day）;水温为15、25、35℃时,N的平均释放速率分别为81、169、301 mg/（m2×Day）,P的平均释放速率分别为8.7、15.8、19.3 mg/（m2×Day）;不同水流速度下,上覆水中的N、P浓度先呈线性升高,120h后趋于平衡;水流速度为0.02、0.04、0.08 m/s时,96 h内N的平均释放速率分别为45、78、161mg/（m2×Day）,P的平均释放速率分别为1.8、7.5、16.8 mg/（m2×Day）。[结论]沉积物中N、P释放速率随着溶解氧降低、水温升高和水流加快而提高,其中溶解氧的影响最大。
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| 关 键 词： | 东太湖 沉积物 溶解氧 水温 水流 |
Effect on the Release of Nitrogen and Phosphorus from Sediment of the East Taihu by Dissolved Oxygen,Water Temperature and Currents |
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| XU Sheng-bao et al. Effect on the Release of Nitrogen and Phosphorus from Sediment of the East Taihu by Dissolved Oxygen,Water Temperature and Currents[J]. Journal of Anhui Agricultural Sciences, 2011, 0(9): 5175-5177,5366 |
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| Authors: | XU Sheng-bao et al |
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| Affiliation: | XU Sheng-bao et al(School of Basic Medical and Biological Sciences,Soochow University,Jiangsu key Laboratory of Aquatic Animal Nutrition,Suzhou,Jiangsu 215123) |
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| Abstract: | [Objective] The aim was to research the endogenous pollution intensity of the East Taihu Lake.[Method] The effects were analysed on the release of nitrogen and phosphorus from sediment of the east Taihu for the environmental factors,such as dissolved oxygen,water temperature and the flow by laboratory simulation experiments.[Result] The results showed that the nitrogen,phosphorus concentrations of the overlying water were increased linearly with time in different dissolved oxygen(DO) and water temperature c... |
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| Keywords: | East Lake Sediment Dissolved oxygen Water temperature Flow |
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