다변량분석법을 이용한 시설재배지의 농업용 지하수 수질 특성
Characteristics of Groundwater Quality for Agricultural Irrigation in Plastic Film House Using Multivariate Analysis
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조회
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다운로드
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참고문헌
키워드
초록
The main purpose of this study is to accumulate the fundamental data representing groundwater of plastic film houses by means of water quality and its multivariate statistical analysis. Groundwater samples were collected in every two years since 2000 to 2004 from total 211 sites. According to the result of water quality analysis, ground water quality was suitable for irrigation purpose averagely. Correlation analysis showed that EC was highest positively correlated with Mg2+ to 0.810 (p<0.01), 0.776 (p<0.01) in April and July, respectively. NO3-N was highest positively correlated with T-N to 0.794 (p<0.01) in October. This result shows that it can lead to a different result even in similar case sometimes. Four factors were extracted through factor analysis in April and July, but five factors were extracted in October. The proportions of cumulative variance by the factor were 64.9, 60.2, and 70.7 in April, July, and October, respectively. The first factor was highly related to anions and cations such as Ca2+, Mg2+, Cl-, SO42-, and EC in contrast to that of stream water. According to the cluster analysis, 211 sites are classified into four groups. Common type of ground water quality was shown in group A. The pH and PO4-P were highest in Group B. The anions and cations were highest in Group C. CODCr was highest in Group D.
Abstract
The main purpose of this study is to accumulate the fundamental data representing groundwater of plastic film houses by means of water quality and its multivariate statistical analysis. Groundwater samples were collected in every two years since 2000 to 2004 from total 211 sites. According to the result of water quality analysis, ground water quality was suitable for irrigation purpose averagely. Correlation analysis showed that EC was highest positively correlated with Mg2+ to 0.810 (p<0.01), 0.776 (p<0.01) in April and July, respectively. NO3-N was highest positively correlated with T-N to 0.794 (p<0.01) in October. This result shows that it can lead to a different result even in similar case sometimes. Four factors were extracted through factor analysis in April and July, but five factors were extracted in October. The proportions of cumulative variance by the factor were 64.9, 60.2, and 70.7 in April, July, and October, respectively. The first factor was highly related to anions and cations such as Ca2+, Mg2+, Cl-, SO42-, and EC in contrast to that of stream water. According to the cluster analysis, 211 sites are classified into four groups. Common type of ground water quality was shown in group A. The pH and PO4-P were highest in Group B. The anions and cations were highest in Group C. CODCr was highest in Group D.
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