Next Article in Journal
Prevalence and Parental Risk Factors for Speech Disability Associated with Cleft Palate in Chinese Children—A National Survey
Previous Article in Journal
An Investigation on the Effect of Extremely Low Frequency Pulsed Electromagnetic Fields on Human Electrocardiograms (ECGs)
Article Menu

Export Article

Open AccessArticle

Groundwater Vulnerability Assessment of the Pingtung Plain in Southern Taiwan

Department of Nursing, Fooyin University, Kaohsiung City 831, Taiwan
Department of Leisure and Recreation Management, Kainan University, Taoyuan City 338, Taiwan
Graduate Institute of Applied Geology, National Central University, Taoyuan City 320, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Yu-Pin Lin
Int. J. Environ. Res. Public Health 2016, 13(11), 1167;
Received: 30 September 2016 / Revised: 9 November 2016 / Accepted: 13 November 2016 / Published: 23 November 2016
(This article belongs to the Section Environmental Health)
PDF [4299 KB, uploaded 23 November 2016]


In the Pingtung Plain of southern Taiwan, elevated levels of NO3-N in groundwater have been reported. Therefore, efforts for assessing groundwater vulnerability are required as part of the critical steps to prevent and control groundwater pollution. This study makes a groundwater vulnerability assessment for the Pingtung Plain using an improved overlay and index-based DRASTIC model. The improvement of the DRASTIC model is achieved by reassigning the weighting coefficients of the factors in this model with the help of a discriminant analysis statistical method. The analytical results obtained from the improved DRASTIC model provide a reliable prediction for use in groundwater vulnerability assessment to nitrate pollution and can correctly identify the groundwater protection zones in the Pingtung Plain. Moreover, the results of the sensitivity analysis conducted for the seven parameters in the improved DRASTIC model demonstrate that the aquifer media (A) is the most sensitive factor when the nitrate-N concentration is below 2.5 mg/L. For the cases where the nitrate-N concentration is above 2.5 mg/L, the aquifer media (A) and net recharge (R) are the two most important factors. View Full-Text
Keywords: NO3-N; groundwater; vulnerability; DRASTIC model; discriminant analysis NO3-N; groundwater; vulnerability; DRASTIC model; discriminant analysis

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Liang, C.-P.; Jang, C.-S.; Liang, C.-W.; Chen, J.-S. Groundwater Vulnerability Assessment of the Pingtung Plain in Southern Taiwan. Int. J. Environ. Res. Public Health 2016, 13, 1167.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top