| 引用本文: | 姚磊,韩超,丁士明.霍甫水丝蚓(Limnodrilus hoffmeisteri)扰动下沉积物-水界面pH值的二维、高分辨分布特征.湖泊科学,2016,28(1):156-162. DOI:10.18307/2016.0118 |
| YAO Lei,HAN Chao,DING Shiming.Two dimensional, high resolution distribution of pH values at sediment-water interface under bioturbation of Limnodrilus hoffmeisteri. J. Lake Sci.2016,28(1):156-162. DOI:10.18307/2016.0118 |
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| 摘要: |
| 采用平面光电极技术研究了霍甫水丝蚓(Limnodrilus hoffmeisteri)扰动对湖泊沉积物-水界面二维pH值分布特征的影响.结果表明水丝蚓扰动能将沉积物-水界面处pH值的变化梯度由2.5 mm内降低1.6个pH值单位减缓至约1 cm内降低0.6个pH值单位,并在界面处形成约1 cm深的pH值缓冲区域.水丝蚓的造穴活动也会对沉积物的二维pH值分布产生影响,洞穴内的pH值高于洞穴周边沉积物约0.6个pH值单位. |
| 关键词: 二维分布 pH值 平面光电极 生物扰动 霍甫水丝蚓 |
| DOI：10.18307/2016.0118 |
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| 基金项目:国家自然科学基金项目(41403097,41471402)和中国科学院南京地理与湖泊研究所人才引进项目(NIGLAS2013QD04)联合资助. |
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| Two dimensional, high resolution distribution of pH values at sediment-water interface under bioturbation of Limnodrilus hoffmeisteri |
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YAO Lei,HAN Chao,DING Shiming
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University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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| Abstract: |
| The presented study measured the 2 dimensional pH value at sediment-water interface under the bioturbation of Limnodrilus hoffmeisteri using the planar optode technique. The result showed pH gradient was alleviated, which decreased from 1.6 pH/2.5 mm to 0.6 pH/1 cm. A 1 cm-depth buffer zone for the pH was formed in the vicinity of the sediment-water interface (SWI). The process of digging burrows by Limnodrilus hoffmeisteri had significant effects on the distribution of the pH around the SWI, and the pH in the burrow was 0.6 pH higher than that of the outside. |
| Key words: Two dimensional pH value planar optode bioturbation Limnodrilus hoffmeisteri |
