Input and Output Budgets for Nitrogen of Paddy Field in South Korea

다국어 초록 (Multilingual Abstract)

The main objective of this research was to estimate the total mass of nitrogen discharged from various sources in paddy field area of South Korea in 2010 and 2013. Input and output budgets for nitrogen were estimated by mass balance approach. The mass balance approach reduces the effect of flow variations, and the large scale approach minimizes local effects, resulting in easier and faster establishment of strategy for nonpoint pollution problems. Nitrogen inputs were chemical fertilizer, compost, atmospheric deposition, biological fixation, and agricultural water, while crop uptake, denitrification, volatilization, and infiltration were nitrogen outputs. The estimated total nitrogen inputs for paddy field in South Korea were 266,211 ton yr-1, 260,729 ton yr-1, while those of total nitrogen outputs were 168,463 ton yr-1, 164,994 ton yr-1 in 2010 and 2013, respectively. Annual amounts of potential nitrogen outflow from paddy field were 97,748 ton yr-1, 95,735 ton yr-1 in 2010 and 2013. Also, annual rate of potential nitrogen outflow were 36.7%, 36.7% in 2010 and 2013, respectively.

참고문헌 (Reference)

1 노기안, "질소수지에 의한 환경특성과 영농방법별 벼농사의 수질영향 평가" 한국토양비료학회 42 (42): 439-446, 2009

2 송정헌, "영농방법에 따른 논에서의 배출부하량 모의" 한국환경농학회 31 (31): 318-327, 2012

3 노기안, "벼농사에서 질소유출이 수질에 미치는 영향평가" 한국환경농학회 24 (24): 270-279, 2005

4 신진환, "기체상 질소산화물을 포함한 2011년도 대한민국 질소수지 산정" 대한환경공학회 36 (36): 75-83, 2014

5 김민경, "경지 정리된 광역 논에서 영양물질 수지와 배출 특성" 한국토양비료학회 38 (38): 164-171, 2005

6 Bashkin, V.N., "Nitrogen budgets for the Republic of Korea and the Yellow Sea region" 57 (57): 387-403, 2002

7 NIER(National Institute of Environmental Research), "Nitrogen budget of south korea and management plan"

8 Yan, X., "Nitrogen budget and riverine nitrogen output in a rice paddy dominated agricultural watershed in eastern China" 106 : 489-501, 2011

9 Kyaw, K.M., "Nitrogen balance in a paddy field planted with whole crop rice (Oryza sativa cv. Kusahonami) during two rice-growing seasons" 42 : 72-82, 2005

10 RDA-NAAS(National Academy of Agricultural Science), "Monitoring project on agri-environment quality" Sam-Mi press 82-87, 2013

11 Statistics Korea, "Korean Statistical Information Service"

12 RDA-NAAS(National Academy of Agricultural Science), "Fertilizer application recommendations for crops" Sangrok press 16-18, 2010

13 Leip, A., "Farm, land, and soil nitrogen budgets for agriculture in Europe calculated with CAPRI" 159 : 3243-3253, 2011

14 RDA-NAAS(National Academy of Agricultural Science), "Evaluation study on environmental affects by fertilizer use in cultivation lands" Sam-Mi press 3-46, 2001

15 Li, Z., "Effects of long-term chemical fertilization and organic amendments on dynamics of soil organic C and total N in paddy soil derived from barren land in subtropical China" 106 : 268-274, 2010

16 Han, K.H., "Characteristics of Non-Point Sources Pollutant Loads at Paddy Plot Located at the Valley Watershed during Irrigation Periods" 18 (18): 94-102, 2011

17 남역현, "2010년도 대한민국 농업 및 축산업지역의 질소 유입 및 유출 수지" 대한환경공학회 34 (34): 204-213, 2012

18 남역현, "2008년도 대한민국 질소수지 연구: 비점오염증가 및 N2O발생량산정" 대한환경공학회 33 (33): 103-112, 2011