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http://dx.doi.org/10.4491/KSEE.2011.33.2.103

Nitrogen Budget of South Korea in 2008: Evaluation of Non-point Source Pollution and $N_2O$ Emission  

Nam, Yock-Hyoun (Department of Civil and Environmental Engineering, Hanyang University)
An, Sang-Woo (Department of Civil and Environmental Engineering, Hanyang University)
Park, Jae-Woo (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.2, 2011 , pp. 103-112 More about this Journal
Abstract
The main objective of this research was to estimate Nitrogen budget of South Korea in 2008. Input-output budgets for nitrogen fluxes were categorized into three sections: cities, agricultural area, and forest. Chemical and biological fixation, dry and wet deposition, imported food and feed were used as the nitrogen input. Crop uptake, volatilization, denitrification, leaching, runoff, and forest consumption were used as the nitrogen outputs. Annual total nitrogen input was 1,294,155 ton/yr, and output was 632,228 ton/yr. Comparison with a previous research in 2005 indicates that nitrogen input was decreased by 1.9% due to the decrease in nitrogen fertilizer while nitrogen output was decreased by 6.3%. Non-point source (NPS) pollution was also estimated by mass balance approach, which increased by 22% than the previous research in 2005. The emission of nitrous oxide ($N_2O$) caused by denitrification was newly examined in this research. About 8,289 ton/yr of $N_2O$ was released from agriculture area and domestic wastewater treatment plant.
Keywords
Nitrogen; Nitrogen Budget; Nonpoint Source Pollution; Nitrous Oxide;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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