Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Statistical Analysis of Paddy Water Properties and Variational Factors on Chl-a in Rice Paddy Field

벼 재배지 논물의 수질특성과 Chl-a 변동 요인의 통계적 분석

  • 배희수 (농촌진흥청 국립식량과학원) ;
  • 장현수 (농촌진흥청 국립식량과학원) ;
  • 황재복 (농촌진흥청 국립식량과학원) ;
  • 안승현 (농촌진흥청 국립식량과학원) ;
  • 윤종탁 (농촌진흥청 국립식량과학원) ;
  • 김욱한 (농촌진흥청 국립식량과학원) ;
  • 배범수 (글로벌리서치)
  • Received : 2019.07.26
  • Accepted : 2019.10.04
  • Published : 2019.11.30
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Abstract

Statistical analysis was carried out to identify the influence on environmental factors between paddy water chemical properties and Chl-a concentration (algae biomass index) using water samples collected in June for 3 years at rice paddy field. As a result of correlation analysis, there was a significantly negative relationships in DO(-0.366) and pH(-0.141). In contrast, significantly positive relationships were founded in COD(+0.431) and TOC(+0.422). According to the result of factor analysis, 3 factors were obtained and indicated that PC1 were Ca, K, Mg cation, PC2 were TOC, T-P, $PO{_4}^{3-}-P$ and DO, and PC3 were T-N and $NH_4{^+}-N$. As a result of linear regression analysis to develop a prediction model for chl-a concentration, the total amount of explanation was 20.6%, PC2 had the greatest influence on the increase of chl-a concentration and PC1 also showed a positive correlation but the PC3 has a negative correlation. In conclusion, carbon and phosporous content are the main factors for the increase algae blooms of rice paddy.

Keywords

References

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