Environmental Geology

, Volume 49, Issue 6, pp 923–928 | Cite as

The research of phosphorus of Xiangxi River nearby the Three Gorges, China

  • Chang-Ying Fu
  • Tao Fang
  • Nan Sheng Deng
Original Article


The Xiangxi River is the first middling tributary of the Changjiang River near the Three Gorges Dam. The River is subject to phosphorus pollution mainly from industrial wastewater. As the water quality of the Xiangxi River could directly influence the water quality of the Three Gorges Reservoir, the research on phosphorus levels and its change in the sediment profile of the Xiangxi River could provide useful information in the dynamic changes in the system, thereby offering options for mitigative measures. Water and sediment samples from lower reaches of Xiangxi River were collected and the different forms of phosphorus in sediments of the Xiangxi River were studied. The concentrations of total phosphorus in sediment ranged from 757.67 to 1438.54 mg/kg. Inorganic phosphorus concentrations ranged from 684.63 to 1055.58 mg/kg. Phosphorus contamination was serious in some parts of the Xiangxi River. With an average concentration of 635.17 mg/kg, calcium-bound phosphorus is the main form among different inorganic phosphorus forms. Labile phosphorus and iron/aluminum-bound phosphorus measured 3.40, 0.05and 35.28 mg/kg, respectively. The mobilization potential of phosphorus of sediments was studied through adsorption and release experiments. The equilibrium concentration of phosphorus adsorption and release was around 0.1 mg/L. The initial concentrations of phosphorus in the overlying water and the sediments have obvious effect on phosphorus mobilization potential. In addition, the release rate of phosphorus in sediment increased with water depth.


Phosphorus Sediment Adsorption and release Xiangxi River Three Gorges China 



This research work was founded by Key Project of Chinese Academy of Sciences (KSCX2-SW-111) and the National Key Project (2002CB412300).


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Institute of HydrobiologyThe Chinese Academy of SciencesWuhanChina
  2. 2.Wuhan UniversityWuhanChina

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