Effect of Ecological Water Supplement on Groundwater Restoration in the Yongding River Based on Multi-Model Linkage
Abstract
:1. Introduction
2. Materials and Methods
2.1. Geological and Hydrogeological Conditions in the Study Area
2.2. Workflow and Data Collection
2.3. Models
2.3.1. Fuzzy Mathematics Model
2.3.2. Numerical Simulation Model
2.3.3. Machine Learning Model
2.3.4. Model Performance Evaluation Metrics
3. Results
3.1. Evaluation of the Infiltration Volume of the Yongding River Channel
3.2. Numerical Model Performance
3.3. Influence of the Ecological Water Supplement of the Yongding River on the Groundwater Flow Systems
3.3.1. Actual Groundwater Level Variation in the Study Area from 2017 to 2019
3.3.2. Groundwater Budget Variation before and after Ecological Water Supplement
3.3.3. The Effect of the Ecological Water Supplement of the Yongding River on groundwater Level Variation
3.3.4. The Impact Range of the Yongding River Ecological Water Supplement
4. Discussion
4.1. Contribution of the Ecological Water Supplement in the Yongding River Channel to Groundwater Restoration
4.2. Suggestions of Ecological Water Supplement and Groundwater Exploitation
- The ecological water supplement should increase by 40 × 106 m3/year in the downstream area. The potential artificial ecological water supply sources mainly include the water from the mid-route of the South-to-North Water Diversion Project, the water from the Guanting Reservoir, and the reclaimed water collected from the cities along the Yongding River. Then, the total ecological water supplement in the study area is 170 × 106 m3/year.
- The groundwater exploitation should be reduced by 35.77 × 106 m3/year in the downstream area, including the eastern part of Yongqing County, the southern part of Langfang City, the southern part of Wuqing District, and the western part of Beichen District.
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Section | Seepage Rate | Ecological Water Supplement (×106 m3) | Infiltration Volume (×106 m3) |
---|---|---|---|
S1 | 0.72 | 4.90 | 3.54 |
S2 | 0.72 | 44.07 | 31.82 |
S3 | 0.76 | 3.66 | 2.78 |
S4 | 0.62 | 40.52 | 25.02 |
S5 | 0.43 | 10.52 | 4.50 |
S6 | 0.38 | 22.83 | 8.68 |
S7 | 0.48 | 12.05 | 5.72 |
S8 | 0.48 | 0 | 0 |
S9 | 0.22 | 0 | 0 |
S10 | 0.19 | 0 | 0 |
Total | 0.59 | 138.55 | 82.06 |
Before Ecological Water Recharge | After Ecological Water Recharge | ||||
---|---|---|---|---|---|
Budget Tems | Volume (×106 m3/year) | Percentage | Volume (×106 m3/year) | Percentage | |
Recharge | Precipitation infiltration | 578 | 68.65% | 507 | 58.55% |
Mountain front recharge | 141 | 16.75% | 98 | 11.32% | |
Lateral inflow | 14 | 1.66% | 100 | 11.55% | |
Ecological water supplement infiltration | 0 | 0.00% | 82 | 9.47% | |
Regression quantity of well irrigation | 109 | 12.95% | 79 | 9.12% | |
Total recharge | 842 | 100% | 866 | 100.00% | |
Discharge | Evaporation | 18 | 1.80% | 3 | 0.46% |
Lateral outflow | 263 | 26.10% | 40 | 6.19% | |
Exploitation | 725 | 72.10% | 603 | 93.34% | |
Total discharge | 1006 | 100.00% | 646 | 100.00% | |
Recharge and discharge difference | −163 | 220 |
Feature Variables | |||
---|---|---|---|
Type | Indicator | Source | Form |
Meteorological factors | Precipitation | Statistical data | Accumulate |
Evaporation | Statistical data | Accumulate | |
Topographical factors | Landform | Remote sensing data | Distributed |
Lateral inflow | Numetical model | Distributed | |
Human factors | Ecological water supplement | Statistics caculating | Accumulate |
Artificial mining | Statistical data | Accumulate | |
Hydraulic feature | Hydraulic conductivity | Numerical model calibration | Distributed |
Specific yield | Numerical model calibration | Distributed | |
Labeled data | |||
Groundwater level rises or not | Yes (1) | ||
No (0) |
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Nan, T.; Cao, W. Effect of Ecological Water Supplement on Groundwater Restoration in the Yongding River Based on Multi-Model Linkage. Water 2023, 15, 374. https://doi.org/10.3390/w15020374
Nan T, Cao W. Effect of Ecological Water Supplement on Groundwater Restoration in the Yongding River Based on Multi-Model Linkage. Water. 2023; 15(2):374. https://doi.org/10.3390/w15020374
Chicago/Turabian StyleNan, Tian, and Wengeng Cao. 2023. "Effect of Ecological Water Supplement on Groundwater Restoration in the Yongding River Based on Multi-Model Linkage" Water 15, no. 2: 374. https://doi.org/10.3390/w15020374
APA StyleNan, T., & Cao, W. (2023). Effect of Ecological Water Supplement on Groundwater Restoration in the Yongding River Based on Multi-Model Linkage. Water, 15(2), 374. https://doi.org/10.3390/w15020374