The assessment of high recharge areas using DO indicators and recharge potential analysis: a case study of Taiwan’s Pingtung plain

Jui Pin Tsai, Yu Wen Chen, Liang Cheng Chang, Wen Fu Chen, Chung Jung Chiang, You Cheng Chen

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

Identifying high groundwater recharge areas is important for the conservation of groundwater quality and quantity. A common practice used by previous studies is to estimate groundwater recharge potential (GRP) using recharge potential analysis (RPA) under different environments. These studies use the estimated GRP to identify the high potential groundwater recharge sites. However, the RPA parameters are subjectively defined for these previous studies. To remove the supposition, this study proposes a systematic approach that defines the RPA parameter values based on the theory of parameter identification. This study uses dissolved oxygen (DO) indicators to calibrate the RPA parameters. This calibration improves the correlation coefficient between the DO indicators and computed GRP values from 0.63 to 0.87. By comparing the initial values, these results indicate that the estimated RPA parameters better represent the field infiltration characteristic. This result also indicates that defining the RPA parameter values based on DO indicators is necessary and important for accuracy. These calibrated parameters are used to estimate the GRP distribution of Taiwan’s Pingtung Plain. The GRP values are delineated into five levels. High and excellent GRP areas are defined as high recharge areas, which compose about 26.74 % of the study area. Based on the proposed method, the estimated GRP distribution can accurately represent the study area’s field recharge characteristics. These study results can be a good reference for groundwater recharge analyses, specifically if well data is limited or difficult to obtain.

原文English
頁(從 - 到)815-832
頁數18
期刊Stochastic Environmental Research and Risk Assessment
29
發行號3
DOIs
出版狀態Published - 2014 三月

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 環境化學
  • 安全、風險、可靠性和品質
  • 水科學與技術
  • 環境科學 (全部)

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