Renewability of groundwater in Changzhou, Jiangsu Province: Based on isotopic technology

SU Dong; GONG Xulong; YANG Lei; XU Shugang; ZHANG Yan; LÜ Hang; BU Jianwei; GONG Yabing; GU Chunsheng

doi:10.12029/gc20221019001

2025 Vol. 52, No. 3

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Article navigation > Geology in China > 2025 > 52(3): 1094-1106

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SU Dong, GONG Xulong, YANG Lei, XU Shugang, ZHANG Yan, LÜ Hang, BU Jianwei, GONG Yabing, GU Chunsheng. 2025. Renewability of groundwater in Changzhou, Jiangsu Province: Based on isotopic technology[J]. Geology in China, 52(3): 1094-1106. doi: 10.12029/gc20221019001

Citation:

SU Dong, GONG Xulong, YANG Lei, XU Shugang, ZHANG Yan, LÜ Hang, BU Jianwei, GONG Yabing, GU Chunsheng. 2025. Renewability of groundwater in Changzhou, Jiangsu Province: Based on isotopic technology[J]. Geology in China, 52(3): 1094-1106. doi: 10.12029/gc20221019001

Renewability of groundwater in Changzhou, Jiangsu Province: Based on isotopic technology

1.
Geological Survey of Jiangsu Province, Nanjing 210049, Jiangsu, China
2.
Key Laboratory of Earth Fissure Geological Disaster, Ministry of Natural Resources, Nanjing 210049, Jiangsu, China
3.
College of New Energy and Environment, Jilin University, Changchun 130021, Jilin, China
4.
School of Environmental Studies, China University of Geosciences(Wuhan), Wuhan 430074, Hubei, China

Fund Project: Supported by Geological Exploration Fund of Jiangsu Province (No. [2017]160), collaborative project between Ministry of Natural Resources of the People's Republic of China and Jiangsu Province “Comprehensive geological survey of modern construction demonstration area in southern Jiangsu” (No. [2016]140).

More Information

Author Bio: SU Dong, male, born in 1993, engineer, mainly engaged in the study of isotope hydrogeology; E-mail: sudong1993@126.com

Received Date: 19 October 2022

Revised Date: 14 April 2023

Publish Date: 25 May 2025

Abstract

Abstract

This paper is the result of hydrogeological survey engineering.
Objective
Changzhou is a typical industrialized city in the Yangtze River Delta. The regional groundwater there had experienced a periodic historical process of overdrafts and prohibitions of mining, resulting in a greatly change in the groundwater dynamic field. Thus, it is necessary to conduct a further study on the renewable capacity of the groundwater of Changzhou.
Methods
Based on the analysis of the existing hydrogeology conditions, the recharge, runoff and discharge conditions of groundwater and the characteristics of groundwater ages are systematically analyzed to evaluate the renewable capacity of groundwater using isotope technology.
Results
¹⁸O and D of the shallow groundwater are more abundant than the deep groundwater due to the evaporation to a certain extent. The recharge time of the deep groundwater with relatively closed storage environment is earlier than that in the shallow groundwater. The shallow groundwater, basically affected by infiltration recharge of modern water, has an active circulation zone of modern water reached to a depth of 40 m. As for the ages of the deep groundwater, it varies from less than 2000 to 25000 years, indicating that it is mainly composed of ancient water.
Conclusions
The renewal rate of the shallow groundwater of every year is generally higher than 0.1%, and controlled by the storage conditions, surface water recharge and human activities, etc. Weakly, the renewal rate of the deep groundwater of every year is generally less than 0.05%, and controlled by the distribution of river ancient channel, exploitation and utilization of human beings, etc. These results can provide scientific basis for protection and utilization the groundwater in changzhou and other areas in the yangtze river delta.
- groundwater /
- isotope /
- groundwater age /
- renewability /
- over-mining /
- no-mining /
- hydrogeological survey engineering /
- Changzhou /
- Jiangsu Province

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References

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