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자료유형
학술저널
저자정보
임도영 (국립환경과학원 물환경연구부 유역총량연구과) 류홍덕 (국립환경과학원 물환경연구부 유역총량연구과) 정유진 (국립환경과학원 물환경연구부 유역총량연구과) 김용석 (국립환경과학원 물환경연구부 유역총량연구과) 이재관 (국립환경과학원 물환경연구부 유역총량연구과)
저널정보
한국물환경학회 한국물환경학회지 한국물환경학회지 제33권 제5호
발행연도
2017.1
수록면
546 - 555 (10page)

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The Nutrient budget is one of the agricultural-environment indicators of OECD. A nutrient budget measures the surplus as the differential between the inputs and the outputs of within a certain boundary and within a specified period of time (i.e. one year). According to OECD, the annual nitrogen budget for Korea was $245kg\;N\;ha^{-1}$ in 2014, which corresponds to the first position among OECD countries. In Korea in 2014, about 90 % of livestock excreta was composted as solid and liquid manure, which are usually and customarily spread on agricultural land. The objectives of this study are intended to suggest methodology of the regional nitrogen budget as a nitrogen management tool, which considers conversion from raw excreta to composted manures based on the methodology of OECD/Eurostat, and application of the new method in an agricultural region of Korea. As a result, the calculated excess rate of hydrospheric nitrogen surplus was $251kg\;N\;ha^{-1}$ (in the region in 2014), which indicates the presence of potential risks emanating from excessive nitrogen, with regard to both export water and soil environments. The findings also assert that this was shown to be one of the most important elements in the nitrogen budget, which translates to the actual amounts of nitrogen lost during the solid composting process. To better understand the process and the reliability of the method, it is necessary to analyze the sensitivity of the relevant co-efficients used in the method in the near future.

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