|Title:||屏東沿海地區地下水水質之鹽化趨勢||Other Titles:||Groundwaters Salinization in Chemical Compositions of Coastal Area in Pingtung Plain||Authors:||彭宗仁
|Keywords:||hydrochemical facies;aquifer;salinization;seawater intrusion;Pingtung Plain;水化學相;含水層;鹽化;海水入侵;屏東平原||Issue Date:||Dec-2000||Publisher:||中華土壤肥料學會||Journal Volume:||3||Journal Issue:||4||Start page/Pages:||353-362||Source:||土壤與環境||Abstract:||
The chemical compositions of groundwater, sampled from 18 built-up observation wells located in Pingtung area, were analyzed in 1998 for assessing the groundwater quality. As compared the groundwater qualities with the previous study, it is suggested that the salinization of shallow groundwater is alleviated and that of deep groundwater seems to be more severe than before. This may be due to the change patterns in the utilization of pumping groundwater.
The results also showed that there were distinctive distributions of three hydrochemical facies if tested water qualities were constructed in a Piper diagram. Ca-HCCh type water, with distribution apparently in the midstream and
upstream areas, is formed by the chemical interaction between groundwater and the aquifer materials. Na-Cl type water, with distribution along the coastal area, is mainly related to the encroachment of seawater caused by the intensive exploitation of groundwater. Ca-Cl type water, with distribution between the Ca-HC03 type and Na-Cl type zone, is developed when the intruded seawater forced through the fresh aquifer.
Analyzing the water quality and hydrochemical facies of groundwaters indicate the active seawater intrusion is in processing in coastal Pingtung Plain especially in deeper aquifer.
|Appears in Collections:||農業化學組|
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