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ISSN : 1225-4517(Print)
ISSN : 2287-3503(Online)
Journal of Environmental Science International Vol.28 No.11 pp.935-942
DOI : https://doi.org/10.5322/JESI.2019.28.11.935

Statistical Analysis of Paddy Water Properties and Variational Factors on Chl-a in Rice Paddy Field

Hui Su Bae,Hyeonsoo Jang,Jaebok Hwang,Seung Hyeon Ahn,Jong Tak Youn,Uk Han Kim,Beomsoo Bae

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, PO4 3--P and DO, and PC3 were T-N and NH4 +-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.

벼 재배지 논물의 수질특성과 Chl-a 변동 요인의 통계적 분석

배희수,장현수,황재복,안승현,윤종탁,김욱한,배범수

초록

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