Evaluation of Groundwater Resources and Exploitation Potential: A Case from Weifang City of Shandong Province in China

Abstract

With the rapid growth of population and economy, the demand for groundwater resources is also increasing, leading to the exploitation of groundwater in some areas far greater than the recharge, which easily causes a series of environmental geological problems such as groundwater drawdown, water quality deterioration, surface subsidence, and so on. Taking Shouguang water resource in Weifang City, Shandong Province, China, as an example, the water-bearing formation in the study area can be divided into three types: pore water-bearing formation of unconsolidated sediments, karst fissure water-bearing formation of carbonate rock, and bedrock fissure water-bearing formation. According to the pumping test results, the groundwater-richness zones in the study area were delineated first. On this basis, by analyzing the dynamic changes of groundwater, the study area was divided into 40 blocks, and the natural recharge of groundwater in each block was calculated by the analogy method of the infiltration coefficient of precipitation. Then, combined with the actual situation of the study area, the allowable withdrawal of groundwater resources, mainly including pore water-bearing formation of unconsolidated sediments, karst fissure water-bearing formation of carbonate rock, and bedrock fissure water-bearing formation, was calculated using the safe yield modulus method, the improved method of the uniform arrangement of wells, and temporary storage capacity, respectively. Through the calculation, it can be concluded that the total allowable withdrawal of shallow groundwater resources in Shouguang city is 6292.5783 × 10 4 m 3 /a, that of middle and deep layer groundwater resources is 2574.92 × 10 4 m 3 /a, that of karst fissure water in carbonate rock is 1767.92 × 10 4 m 3 /a, and that of bedrock fissure water is 307.89 × 10 4 m 3 /a. The results show that within the study area, karst fissure water in carbonate rock and bedrock fissure water have immense exploitation potential.

Measuring Dam Deformation of Long-Distance Water Transfer Using Multi-Temporal Synthetic Aperture Radar Interferometry: A Case Study in South-to-North Water Diversion Project, China

“…This ground subsidence is a consequence of groundwater exploitation to fulfill the production and residential needs of the local populace. Shouguang City, where the reservoir is situated, lies in an area known for the excessive exploitation of groundwater resources [40][41][42]. In response to this issue, the city has implemented a series of control measures in recent years.…”

Prediction of potential suitable habitats in the 21st century and GAP analysis of priority conservation areas of Chionanthus retusus based on the MaxEnt and Marxan models

“…The Global Biodiversity Information Facility (GIBF, http:// www.gbif.org), the National Herbarium Resource Centre (NSII, http://www.nsii.ac.cn), the Digital Herbarium of China (http:// www.cvh.org.cn), and related literature (Qu, 2019;Tao, 2021) were searched for the occurrence records of C. retusus, and the information collected was used as distribution data. For the distribution data that were not labeled with precise geographic coordinates but indicated that the collection location was at the township or more precise level, their longitude and latitude were determined by querying their area name using Google Earth.…”

Research on the Genetic Mechanism of High-Temperature Groundwater in the Geothermal Anomalous Area of Gold Deposit─Application to the Copper Mine Area of Yinan Gold Mine

“…It is speculated that the reason is that the elevation value of the recharge area is large. The elevation of the contributing region is calculated mainly through the elevation effect of the δD value of atmospheric precipitation in China, or the recharge elevation of the relationship between the δ 18 O value in groundwater and local altitude is calculated in two ways. − To reduce the estimation error of geothermal water recharge elevation in the study area, the average value of the two formulas is used as the recharge elevation value in the study area.…”