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Evaluation of indirect N2O Emission from Nitrogen Leaching in the Ground-water in Korea
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 Title & Authors
Evaluation of indirect N2O Emission from Nitrogen Leaching in the Ground-water in Korea
Kim, Gun-Yeob; Jeong, Hyun-Cheol; Kim, Min-Kyeong; Roh, Kee-An; Lee, Deog-Bae; Kang, Kee-Kyung;
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 Abstract
This experiment was conducted to measure concentration of dissolved in ground-water of 59 wells and to make emission factor for assessment of indirect emission at agricultural sector in agricultural areas of Gyeongnam province from 2007 to 2010. Concentrations of dissolved in ground-water of 59 wells were ranged trace to . concentrations were positively related with -N suggesting that denitrification was the principal reason of production and -N concentration was the best predictor of indirect emission. The ratio of dissolved -N to -N in ground-water was very important to make emission factor for assessment of indirect emission at agricultural sector. The mean ratio of -N to -N was 0.0035. It was greatly lower than 0.015, the default value of currently using in the Intergovernmental Panel on Climate Change (IPCC) methodology for assessing indirect emission in agro-ecosystems (IPCC, 1996). It means that the IPCC`s present nitrogen indirect emission factor (, 0.015) and indirect emission estimated with IPCC`s emission factor are too high to use adopt in Korea. So we recommend 0.0034 as national specific emission factor () for assessment of indirect emission at agricultural sector. Using the estimated value of 0.0034 as the emission factor () revised the indirect emission from agricultural sector in Korea decreased from 1,801,576 ton (-eq) to 964,645 ton (-eq) in 2008. The results of this study suggest that the indirect Emission of nitrous oxide from upland recommend 0.0034 as national specific emission factor () for assessment of indirect emission at agricultural sector.
 Keywords
Indirect Emission factor;Ground-water;Nitrous oxide;
 Language
Korean
 Cited by
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