Salinization and Desalinization of Western and Southern Coastal Groundwaters of Korea: Implication for Agriculture

Youngyun Park ； Jin-Yong Lee ； Sung-Ho Song ； Jeong-Hee Kim

《土壤及地下水污染整治》 3卷1期 (2016/01) Pp. 1-12

https://doi.org/10.6499/JSGR.2016.0301.001

並列摘要

This study was performed to understand the chemical properties of coastal groundwaters of Korea and to evaluate salinization and desalinization using the chemical compositions of groundwaters, ionic ratios and base cation exchange. Salinization and desalinization frequently occurs in coastal and reclaimed regions, respectively. The reclaimed regions are mainly distributed in western coastal areas, but those are hardly distributed in southern coastal area. Thus, in the western coastal areas, the chemical compositions of groundwaters were mainly affected by salinization by seawater encroachment and desalinization by recharge of fresh water. 33 ~ 37% of the total groundwater samples were affected by seawater, and 6 ~ 15% of the total brackish and saline groundwater samples observed desalinization. However, in the southern coastal areas, the chemical compositions of groundwaters were mainly influenced by salinization (approximately 30 ~ 34%). Also, desalinization processes were observed in some southern groundwater samples (approximately 2 ~ 4%). While the desalinization in the western coastal groundwater was mainly observed in reclaimed regions, desalinization in the southern coastal groundwater was not observed in only reclaimed region. This study shows that desalinization can be one of main factors controlling the chemical compositions of groundwaters in the coastal areas including reclaimed regions and base cation exchange is good tool to identify desalinization.

並列關鍵字

coastal aquifer ； salinization ； desalinization ； cation exchange ； Korea