Simulated Study on Phosphorous Release of Sediment in Shallow Lakes Caused by Wind-wave Disturbance

WANG Li-zhi; WANG Guo-xiang; YU Zhen-fei; ZHOU Bei-bei; GE Xu-guang

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Simulated Study on Phosphorous Release of Sediment in Shallow Lakes Caused by Wind-wave Disturbance

更新时间：2024-11-07

- Simulated Study on Phosphorous Release of Sediment in Shallow Lakes Caused by Wind-wave Disturbance
- Vol. 25, Issue 2, (2011)
- 作者机构：
  
  南京师范大学,地理科学学院,江苏省环境演变及生态建设重点实验室,江苏,南京,2100462. 湖北师范学院,地理科学系,湖北,黄石,435002
- 作者简介：
- 基金信息：
- DOI：
  CLC： X524
- Published：2011
- 稿件说明：
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WANG Li-zhi, WANG Guo-xiang, YU Zhen-fei, et al. Simulated Study on Phosphorous Release of Sediment in Shallow Lakes Caused by Wind-wave Disturbance[J]. 2011, 25(2).
DOI：

WANG Li-zhi, WANG Guo-xiang, YU Zhen-fei, et al. Simulated Study on Phosphorous Release of Sediment in Shallow Lakes Caused by Wind-wave Disturbance[J]. 2011, 25(2). DOI：

摘要

为研究湖泊沉积物在不同风浪扰动情况下对水体中各形态磷的变化的影响

进行了室内模拟风浪扰动实验。结果表明

水体中总磷(TP)的含量随着扰动频率的增加而升高。在水体其他各形态磷中

溶解性总磷(DTP)、溶解性有机磷(DOP)的含量在模拟风速大于10~12 m/s时保持稳定

并呈下降趋势。溶解性活性磷(SRP)的含量在模拟风速大于8~10 m/s时保持稳定

并随着扰动频率的增加略下降。颗粒磷(PP)的含量随着扰动频率的增加而增加。PP为上覆水中主要形态的磷

占上覆水磷总量的54.55%~67.09%

SRP仅占上覆水磷总量的1.94%~3.19%

PP占TP的百分比随着模拟风速的升高逐渐升高

而DTP

SRP和DOP占TP的百分比随着模拟风速的升高逐渐降低。水体中颗粒物分形维数随着扰动频率的升高呈现先增大后降低的趋势。在模拟风速5~7 m/s时水体中各形态磷的含量出现激增。实验结果表明随着风浪扰动的加强能引起浅水湖泊中颗粒态和溶解态磷的浓度的迅速提高

但是由于水中颗粒物的絮凝作用的加强

悬浮颗粒物对磷的吸附能力也相应提高

因此高频风浪扰动后水体溶解性磷浓度的增幅并不明显

而仅是对浮游生物生长贡献不大的PP增幅明显。

Abstract

In order to know about concentration change of different species of phosphorous in overlying water during different wind-wave process

a simulated experiment was done.The results indicated that the concentration of total phosphorus(TP) increased remarkably with the increasing of disturbance frequency.The concentration of dissolved total phosphorus(DTP) and dissolved organic phosphorus(DOP) maintained level off and went down when the simulated wind speed larger than 10~12 m/s.Soluble reactive phosphorus(SRP) ...

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