Pubblicazione scientifica

Groundwater Vulnerability Assessment of the Pingtung Plain in Southern Taiwan

FILONE TECNOLOGICO	TEMA
produzione e raccolta

RIASSUNTO

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.

DATA

Data di pubblicazione: 01/11/2016

AUTORI

LIANG CHING-PING
JANG CHENG-SHIN
LIANG CHENG-WEI
CHEN JUI-SHENG

ENTE DI AFFERENZA

DEPT NURSING FOOYIN UNIV KAOHSIUNG CITY
DEPT LEISURE & RECREATION MGMT KAINAN UNIV TAOYUAN CITY 338 TAIWAN CSJANG MAIL KNU EDU TW
GRADUATE INST APPLIED GEOLOGY NATL CENTRAL UNIV TAOYUAN CITY 320 TAIWAN

RIVISTA

International Journal of Environmental Research and Public Health, 13(11), 1167

IMPACT FACTOR

2,620

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