| 风浪作用下入湖河口内源释放特征 |
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| 引用本文： | 许志波,卢信,胡维平,邓建才,袁旭音.风浪作用下入湖河口内源释放特征[J].水科学进展,2011,22(4):574-579. |
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| 作者姓名： | 许志波 卢信 胡维平 邓建才 袁旭音 |
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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： | 国家水体污染控制与治理科技重大专项(2008ZX07101-012); 水利部公益性行业专项经费资助项目(201001029); 国家自然科学基金资助项目(40901252)~~ |
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| 摘 要： | 采用Y型沉积物再悬浮发生装置模拟3种风速条件下典型入湖河流河口沉积物再悬浮和沉降过程.结果表明,随着风速的增大,水柱中悬浮物总量增加;3种风速条件下氨氮(NH4+-N)增量均为负;小风和中风过程,正磷酸盐(PO43--P)总量呈减小趋势,大风过程,正磷酸盐总量出现了明显上升,相对于初始值增加了46%,在5.1~8.7m/s的某一模拟风速条件下PO43--P的释放和吸附达到动态平衡,其表观值与初始值相等.总氮(TN)和总磷(TP)总量随着风速的增加而增大,TN最大增量是初始总量的2倍,而TP则是17倍;风浪过后TN、TP总量基本恢复到初始值.典型风速过程中,营养盐垂向分布无明显规律.
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| 关 键 词： | Y型装置 营养盐 内源释放 再悬浮 太湖 |
| 收稿时间： | 2010-05-07 |
Release characteristic of nutrient from sediment in the estuary driven by wind and wave |
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| XU Zhi-bo,LU Xin,HU Wei-ping,DENG Jian-cai,YUAN Xu-yin.Release characteristic of nutrient from sediment in the estuary driven by wind and wave[J].Advances in Water Science,2011,22(4):574-579. |
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| Authors: | XU Zhi-bo LU Xin HU Wei-ping DENG Jian-cai YUAN Xu-yin |
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| Institution: | 1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;2.College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | A Y-shape apparatus,which stimulates the resuspension-sedimentation process of indoor sediment,was deployed to study the resuspension and settlement process of sediments from the estuary of Tianji Port in Gonghu Lake under the influence of different wind strengths.More suspended substance(SS) will be released into the water with the increases of wind speed.The increment of ammonia nitrogen(NH+4-N) is negative under the three types of wind.The gross of phosphate(PO3-4-P) exhibits a decreasing trend under the... |
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| Keywords: | Y-shape apparatus nutrient endogenesis release resuspension Taihu Lake |
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