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

作　　者：冯海艳[1] 李文霞[1] 杨忠芳[1] 阮晓红[2] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]河海大学环境科学与工程学院,江苏南京210098

出　　处：《地质通报》2010年第5期739-744,共6页Geological Bulletin of China

基　　金：国家"863"项目<苏州水环境质量改善与综合示范>子课题(编号:2003AA601070);中国地质大学(北京)创新团队项目资助

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。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.

关 键 词：富营养化 底泥 磷 释放 吸附 

分 类 号：X142[环境科学与工程—环境科学]