Detrended fluctuation analysis (DFA) and multifractal methods are applied to the time-scaling properties analysis of water pH series in Poyang Lake Inlet and Outlet in China. The results show that these pH series are characterised by long-term memory and multifractal scaling, and these characteristics have obvious differences between the Lake Inlet and Outlet. The comparison results suggest that monofractal and multifractal parameters can be quantitative dynamical indexes reflecting the capability of anti-acidification of Poyang Lake. Furthermore, we investigated the frequency-size distribution of pH series in Poyang Lake Inlet and Outlet. Our findings suggest that water pH is an example of a self-organised criticality (SOC) process. The results show that it is different SOC behaviours that result in the differences of power-law relations between pH series in Poyang Lake Inlet and Outlet. This work can be helpful to improvement of modelling of lake water quality.
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Research Article|
April 01 2010
Comparative analysis of time-scaling properties about water pH in Poyang Lake Inlet and Outlet on the basis of fractal methods
K. Shi;
1College of Biology and Environmental Sciences, Jishou University, Jishou Hunan 416000, China
E-mail: einboplure@163.com
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C. Q. Liu;
C. Q. Liu
1College of Biology and Environmental Sciences, Jishou University, Jishou Hunan 416000, China
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Z. W. Huang;
Z. W. Huang
2Town and Country Construction College, Chengdu University, Chengdu Sichuan 610106, China
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B. Zhang;
B. Zhang
3Land and Resources College, China West Normal University, Nanchong Sichuan 637009, China
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Y. Su
Y. Su
1College of Biology and Environmental Sciences, Jishou University, Jishou Hunan 416000, China
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Water Sci Technol (2010) 61 (8): 2113–2118.
Citation
K. Shi, C. Q. Liu, Z. W. Huang, B. Zhang, Y. Su; Comparative analysis of time-scaling properties about water pH in Poyang Lake Inlet and Outlet on the basis of fractal methods. Water Sci Technol 1 April 2010; 61 (8): 2113–2118. doi: https://doi.org/10.2166/wst.2010.135
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K. Shi, C. Q. Liu, Z. W. Huang, B. Zhang, Y. Su; Comparative analysis of time-scaling properties about water pH in Poyang Lake Inlet and Outlet on the basis of fractal methods. Water Sci Technol 1 April 2010; 61 (8): 2113–2118. doi: https://doi.org/10.2166/wst.2010.135
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