Phosphorus fractions in the sediments of yuecheng reservoir, china
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Date
2019
Authors
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Publisher
MDPI
Abstract
As a result of the inexorable development of the economy and the ever-increasing population,
the demand for water in the urban and rural sectors has increased, and this in turn has caused
the water quality and eutrophication of the reservoir to become a legitimate concern in the water
environment management of river basins. Phosphorus (P) is one of the limiting nutrients in aquatic
ecosystems; P in the sediment is a primary factor for eutrophication. Yuecheng Reservoir is located in
one of the most productive and intensively cultivated agricultural regions in North China. Detailed
knowledge of the sediment is lacking at this regional reservoir. The first study to look into the different
P fractions and its diffusion fluxes at the water sediment interface of the Yuecheng Reservoir makes it
possible to learn about the internal P loading. According to the results, the concentrations of total
phosphorus (TP) ranged from 1576.3 to 2172.6 mg kg and the P fraction concentration sequence is as
follows: P associated with calcium (Ca–Pi) > organic P (Po) > P bound to aluminum (Al), ferrum (Fe)
and manganese (Mn) oxides and hydroxides (Fe/Al–Pi). The results demonstrated that, although the
construction of a large number of water conservancy projects in the upper reaches of the river resulted
in the decrease of inflow runoff, the pollutions from terrestrial plants or materials played a key role
in the sediment phosphorus fraction, and they should be emphasized on the water environment
management of river basin.
Description
Keywords
phosphorus fractions, diffusion fluxes, sediment, Zhangweinan River Basin, Yuecheng Reservoir
Citation
Ming, Lu. et al. (2019). Phosphorus Fractions in the Sediments of Yuecheng Reservoir, China. Water (Basel), 11(12), 2646–. https://doi.org/10.3390/w11122646