Declarations
Funding: The research work was funded by the Key Technologies
and Application Demonstration of Groundwater Over-Extraction Control and
Protection in Huang-Huai-Hai Region
(No. 2021YFC3200502).
Competing Interests: The authors have no relevant financial or
non-financial interests to disclose.
Availability of data and materials: All data and materials used
in the manuscript comply with field standards and they are available.
Authors’ Contributions: All authors contributed to the
research. Tianyu Zhou wrote the paper by himself and finished the
literature review and data analysis, Longcang Shu proposed the idea of
this research and tutored the process of the research, Chengpeng Lu and
Bo Liu proposed the idea of this research and joined the process of the
research. Four authors read and approved the final manuscript.
Acknowledgements: This work is based on the project “Key
Technologies and Application Demonstration of Groundwater
Over-Extraction Control and Protection in Huang-Huai-Hai Region”. We
gratefully acknowledge the helpful comments and constructive suggestions
by reviewers and editors.