Statistical models for the assessment of nitrate contamination in urban groundwater using GIS

S. M. Lee, K. D. Min, Nam Chil Woo, Y. J. Kim, C. H. Ahn

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

The purpose of this study is to develop statistical models for groundwater quality assessment in urban areas using Geographic Information Systems (GIS). To develop the models, the concentrations of nitrate (expressed as nitrogen, NO 3 -N), which are different according to the type of land use, well depth and distribution of rainfall, were analyzed in the Seoul (the capital of South Korea) area. Data such as land use, location of wells and groundwater quality data for nitrate contamination were collected and a database constructed within GIS. The distribution of NO 3 -N concentrations is not normal, and the results of the Mann-Whitney U-test analysis show the difference of NO 3 -N concentration by well depth and by distribution of rainfall. In both the shallow and deep wells, the radius of influence is 200 m in the dry season and 250 m in the rainy season, showing the tendency to increase in the rainy season. The results of correlation and regression analysis indicate that mixed residential and business areas and cropped field areas are likely to be the major contributor of increasing NO 3 -N concentration. Land uses are better correlated with NO 3 -N in deep wells than in shallow wells.

Original languageEnglish
Pages (from-to)210-221
Number of pages12
JournalEnvironmental Geology
Volume44
Issue number2
Publication statusPublished - 2003 Jun 1

Fingerprint

statistical models
Land use
geographic information systems
Nitrates
Geographic information systems
Groundwater
groundwater
Contamination
nitrates
nitrate
well
Rain
land use
wet season
water quality
rain
Regression analysis
land use location
South Korea
Nitrogen

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Water Science and Technology
  • Pollution
  • Soil Science

Cite this

Lee, S. M. ; Min, K. D. ; Woo, Nam Chil ; Kim, Y. J. ; Ahn, C. H. / Statistical models for the assessment of nitrate contamination in urban groundwater using GIS. In: Environmental Geology. 2003 ; Vol. 44, No. 2. pp. 210-221.
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Statistical models for the assessment of nitrate contamination in urban groundwater using GIS. / Lee, S. M.; Min, K. D.; Woo, Nam Chil; Kim, Y. J.; Ahn, C. H.

In: Environmental Geology, Vol. 44, No. 2, 01.06.2003, p. 210-221.

Research output: Contribution to journalArticle

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