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,底泥时P的吸附率有减小的趋势。中图分类号:X142文献标志码:A文章编号:1671-2552(2010)05-0739-06FengH Y, Li WX, YangZ F,RuanXH.Influence of water body eutrophication level on phosphorus releasing/absorptionhom sediments in Suzhou River, Jiangsu, China. Geological Bulletin of China, 2010, 29(5):739-744Abstract: Studies on the influence of water body eutrophication level on phosphorus releasing/absorption from sediments in SuzhouRiver were conducted under mimicked static state experiments. The results were given as follows: sediments from Suzhou River canabsorb P in static state without extemal input;with the increasing of phospbate concentration, the phosphate adsorption capacity ofsediment also has increased;the higher ratio of over-lying waterto sediment it is,the lower phosphorus absorbing capacity on sedi-ments will be.Key words: eutrophication;sediments;phosphorus;release;absorption