Volume 7 Issue 2
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Article Navigation >  Journal of Environmental Engineering Technology  > 2017  >  7(2): 152-160
ZHONG Xin, TIAN Yonglan, ZHONG Meifang, ZHANG Huayong. Distribution of phosphorus and estimation of diffusion flux in the Qixinghu wetland[J]. Journal of Environmental Engineering Technology, 2017, 7(2): 152-160. doi: 10.3969/j.issn.1674-991X.2017.02.023
Citation: ZHONG Xin, TIAN Yonglan, ZHONG Meifang, ZHANG Huayong. Distribution of phosphorus and estimation of diffusion flux in the Qixinghu wetland[J]. Journal of Environmental Engineering Technology, 2017, 7(2): 152-160. doi: 10.3969/j.issn.1674-991X.2017.02.023
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Distribution of phosphorus and estimation of diffusion flux in the Qixinghu wetland

doi: 10.3969/j.issn.1674-991X.2017.02.023

  • Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, China

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  • Corresponding author: Huayong ZHANG E-mail: rceens@ncepu.edu.cn
  • Received Date: 2016-09-09
  • Publish Date: 2017-03-20
    Abstract
  • To study the distribution and migration of phosphorus in the Qixinghu wetland in Tengzhou City of Shangdong Province, the samples of overlying water and sediment of Qixinghu wetland were collected, the distribution characteristics of total phosphorus(TP), total dissolved phosphorus(TDP), solubility reactive phosphorus(SRP) and particulate phosphorus(PP) analyzed, and the relationship of P in overlying water and pore water of sediment studied. The results showed that, TP concentrations in overlying water of open water area were stable along with the flow direction (0.05-0.06 mg/L), declined in overlying water of reed community area (0.04-0.09 mg/L) and fluctuated in overlying water of cattail community area (0.02-0.09 mg/L). All measured phosphorus fractionations (TP, TDP, SRP and PP) in pore water of sediment of open water area were higher than those of plant communities, indicating that plants played an important role in the absorption and transformation of phosphorus in sediments. Phosphorus contents in aerial organs of macrophytes were significantly higher than the underground part. After settlement of phosphorus in three years, the content of TP in sediments increased by 42.2% in the wetland. The diffusion flux across sediment-water interface of TDP and SRP were positive, suggesting that phosphorus diffuses from sediment to overlying water. Moreover, diffusion fluxes of open water were higher than those of the plant communities. As indicated by the various forms of phosphorus correlation of pore water and overlying water, the phosphorus of pore water mainly diffuses into the overlying water by TDP and SRP.

     

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