Study on the ecological water level and the ecological groundwater demand in Funing County, Jiangsu Province

WANG Hesheng; MENG Xianchao; DAI Feihu; TAN Guili; GONG Jianshi; TAO Xiaohu; LI Yan; ZHOU Kaie; TAN Mengjiao

doi:10.16788/j.hddz.32-1865/P.2023.02.003

2023 Vol. 44, No. 2

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Article navigation > East China Geology > 2023 > 44(2): 141-149

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WANG Hesheng, MENG Xianchao, DAI Feihu, TAN Guili, GONG Jianshi, TAO Xiaohu, LI Yan, ZHOU Kaie, TAN Mengjiao. 2023. Study on the ecological water level and the ecological groundwater demand in Funing County, Jiangsu Province. East China Geology, 44(2): 141-149. doi: 10.16788/j.hddz.32-1865/P.2023.02.003

Citation:

WANG Hesheng, MENG Xianchao, DAI Feihu, TAN Guili, GONG Jianshi, TAO Xiaohu, LI Yan, ZHOU Kaie, TAN Mengjiao. 2023. Study on the ecological water level and the ecological groundwater demand in Funing County, Jiangsu Province. East China Geology, 44(2): 141-149. doi: 10.16788/j.hddz.32-1865/P.2023.02.003

Study on the ecological water level and the ecological groundwater demand in Funing County, Jiangsu Province

1. Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China;
2. Funing Bureau of Natural Resources and Planning, Yancheng 224400, Jiangsu, China;
3. Yaohua Water Management Service Station of Qixia District, Nanjing 210046, Jiangsu, China;
4. Key Laboratory of Watershed Eco-Geological Processes, Ministry of Natural Resources, Nanjing 210016, Jiangsu, China

Received Date: 11 January 2022

Revised Date: 18 July 2022

Abstract

Abstract

The shallow groundwater and surface water in northern Jiangsu plain are interacted and inter-conditioned. Due to the importance of the ecological properties and environmental functions of groundwater, it is essential to study its ecological water level and surplus-deficit characteristics of ecological water demand for ecological protection and restoration. Taking Funing County as an example, based on the analysis of shallow groundwater level dynamics, the index system of ecological water level was determined by the method of statistical analysis and the ecological water level of groundwater was studied, as well as the surplus-deficit characteristics of shallow groundwater ecological water were evaluated on Arcgis platform. The results show that the upper limit of burial depth of ecological water level in most areas of Funing County ranges from 1.5 m to 3 m, and the lower limit ranges from 2.63 m to 3.18 m. In January 2021, about 25.3％ of the regional groundwater level was in the unsuitable extraction area, and the ecological water demand was 5 899 600 m³. In May 2021, the ecological water demand was 7 471 900 m³. In the groundwater unsuitable extraction area, the groundwater extraction and the prohibition of shallow groundwater use should be adjusted accordingly in combination with the situation of water supply within the county area, so that the ecological and environmental functions of groundwater can be efficiently controlled.
- ecological groundwater level /
- ecological groundwater demand /
- surplus-deficit characteristics /
- Funing County, Jiangsu Province

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References

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