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KMID : 1024520100190091153
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Journal of the Environmental Sciences
2010 Volume.19 No. 9 p.1153 ~ p.1159
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Probability Distribution of BOD EMC from Paddy Fields
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Jin So-Hyun
Jung Jae-Woon
Yoon Kwang-Sik
Choi Woo-Jung
Choi Dong-Ho
Kim Sang-Don
Kang Jae-Hong
Choi Yu-Jin
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Abstract
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Identification of probability distribution for water quality constituents from specific land use is important to achieve successful implementation of TMDL program. In this 3-year study, distribution of discharge and BOD(Biological Oxygen Demand) concentration from paddy rice fields were monitored. Four probability distributions, normal, log-normal, Gamma and Weibull were fitted and the goodness-of-fit was assessed using probability plots and Kolmogorov-Smirnov test. EMCs of BOD in runoff from paddy field ranged 0.37 to 7.99 mgL-1, and all four probability distributions were acceptable. But the normal distribution would be preferred for BOD from paddy fields considering nature of straight forward application.
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KEYWORD
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BOD EMC, probability distribution, Paddy fields
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