| 巢湖沉积物有效态磷与硫的DGT原位同步分析研究 |
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| 引用本文： | 王艳平,关庆伟,李超,许笛,丁士明.巢湖沉积物有效态磷与硫的DGT原位同步分析研究[J].环境科学学报,2015,35(8):2512-2518. |
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| 作者姓名： | 王艳平 关庆伟 李超 许笛 丁士明 |
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| 作者单位： | 1. 南京林业大学生物与环境学院, 南京 210038;2. 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, 南京 210008,南京林业大学生物与环境学院, 南京 210038,四川大学建筑与环境学院, 成都 610065,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, 南京 210008,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, 南京 210008 |
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| 基金项目： | 国家自然科学基金(No.21177134,41001334) |
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| 摘 要： | 沉积物有效态磷(P)与硫(S)的含量分布是影响湖泊营养元素循环和水体富营养化的重要因子.本文利用Zr O-Ag I薄膜梯度扩散技术(Zr O-Ag I DGT)原位同步获取了南淝河-巢湖沉积物中有效态P和S的高分辨分布信息.结果发现:绝大部分沉积物有效P和S自界面向下呈急剧升高趋势,并在50 mm深度内出现峰值;河道内沉积物有效P和S的含量高于湖体,且P在界面的表观释放通量明显高于湖体,表明河道沉积物是湖体P的输入源.部分采样点出现有效P与S同步变化的现象,两者具有显著相关性,证实沉积物内部P和S存在同步释放的规律.
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| 关 键 词： | 沉积物 有效态磷与硫 DGT 原位 同步 |
| 收稿时间： | 2014/10/10 0:00:00 |
| 修稿时间： | 2014/11/10 0:00:00 |
A study of in situ synchronous measurement of available phosphorus and sulfur in the sediments of lake Chaohu by diffusive gradients in thin films (DGT) |
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| WANG Yanping,GUAN Qingwei,LI Chao,XU Di and DING Shiming.A study of in situ synchronous measurement of available phosphorus and sulfur in the sediments of lake Chaohu by diffusive gradients in thin films (DGT)[J].Acta Scientiae Circumstantiae,2015,35(8):2512-2518. |
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| Authors: | WANG Yanping GUAN Qingwei LI Chao XU Di and DING Shiming |
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| Institution: | 1. College of Biology and Environment, Nanjing Forestry University, Nanjing 210038;2. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008,College of Biology and Environment, Nanjing Forestry University, Nanjing 210038,College of Architecture and Environment, Sichuan University, Chengdu 610065,State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008 and State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008 |
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| Abstract: | The content distribution of available phosphorus (P) and sulfur (S) in the sediment is an important factor for nutrient cycle and eutrophication in water. We obtained the in situ high resolution information of the distribution of available P and S simultaneously in lake Chaohu-river Nanfeihe by using ZrO-AgI diffusive gradients in thin films (ZrO-AgI DGT). The results show that the concentrations of available P and S have an obvious rising from the surface of sediment downwards, and appear peaks within 50 mm depth. There is a higher available P and S concentration in river than in lake, and the exchange flux of P at the interface is obviously higher than that in the lake, indicating that river sediment is the input source of P. There is a synchronous change of available P and S in some sampling points with a significant correlation, which confirms both elements have a synchronous release in the sediment. |
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| Keywords: | Sediment effective phosphorus and sulfur diffusive gradients in thin films (DGT) in situ synchronous |
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