Saline-fresh water interface variation during the past 34 years in Shouguang City, China

摘要

Present study consists the variations in the saline-freshwater interface in Shouguang, China during the past 34years. The results showed thethe groundwater level is directly proportional to the concentration of Cr in groundwater monitoring wells, and groundwater exploitation induced differences in groundwater level between the northern and southern parts of the study area, resulting in increased saline water intrusion. The saline water intrusion area was 141.16 km(2) in 1981, but 1164.25 km(2) in 2014, accounting for approximately 58.5% of the total area of Shouguang. Additionally, the average intrusion rate is about 4.28 km(2)/a, ranging from 3.48 km to 7.48km.