水体富营养化状态对城市河道底泥吸附/释放P的影响——以江苏省苏州市河道试验研究为例

Influence of water body eutrophication level on phosphorus releasing/absorption from sediments in Suzhou River, Jiangsu, China.

School of Earth Sciences and Resources, China University of Geoscience, Beijing 100083, China;2. College of Environmental Science and Engineering, Hohai University, Nanjing 210098, Jiangsu, China

摘要: 以苏州古城区内的河道为研究对象，采用静态培养的方式，研究了上覆水体不同富营养化程度对底泥中P释放/吸附的影响。研究结果表明：截断外源污染后，苏州河道底泥对水体中营养盐P呈现吸收状态；随着上覆水体磷酸盐浓度的增大，单位面积底泥累积吸收的磷酸盐就越多；上覆水与底泥比值越大，底泥对P的吸附率有减小的趋势。
- 富营养化 /
- 底泥 /
- 磷 /
- 释放 /
- 吸附
Abstract: Studies on the influence of water body eutrophication level on phosphorus releasing/absorption from sediments in Suzhou River were conducted under mimicked static state experiments. The results were given as follows: sediments from Suzhou River can absorb P in static state without external input; with the increasing of phosphate concentration, the phosphate adsorption capacity of sediment also has increased; the higher ratio of over-lying water to sediment it is, the lower phosphorus absorbing capacity on sediments will be.
- eutrophication /
- sediments /
- phosphorus /
- release /
- absorption