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Journal of Environmental Accounting and Management 12(2) (2024) 115--127 | DOI:10.5890/JEAM.2024.06.001

Ping Yu$^{1}$, Lanqing Qiu$^{1}$, Huixin Ma$^{1}$, Fawen Li$^{2}$ , Shaofei Li$^{1}$, Ai Wang$^{1}$

$^1$ College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300384, China

$^ 2$ State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China

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Abstract

As the problems of declining shallow groundwater levels becomes more prominent, depletion of water resources and deterioration of water quality are becoming increasingly prominent. To study the dynamic trend of shallow groundwater and its influencing factors, this study used Hilbert-Huang Transform analysis and Wavelet analysis to analyze the multiscale cycle and trend of the burial depth of shallow groundwater in the Jizhou area of Tianjin and evaluated three factors (annual precipitation, exploitation and evaporation) affecting the burial depth of shallow groundwater by multiple regression and gray correlation analysis. The results showed that there were obvious interannual variation cycles in the burial depth series of shallow groundwater in Jizhou; the correlation between the burial depth of shallow groundwater and the amount of extraction is the greatest; the Wavelet transform and HHT methods had good applicability to the analysis of groundwater hydrological time series, which helped to comprehensively understand the dynamic change characteristics of shallow groundwater.

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