Nitrogen budgets in Sihwa-ho in 2010 were estimated using a mass balance approach. Major nitrogen fluxes sources can be divided into three sections: cities, agricultural area, and forest. Surplus nitrogen 2,030~2,214 ton/yr (2,123 ton/yr in average) was discharged to Sihwa Lake. 20% of the surplus nitrogen is removed from the wetland and 60% is removed tidal flats. Therefore net nitrogen discharge from Sihwa basin is estimated to be 650 708 ton/yr (679 ton/yr in average). Wet and dry nitrogen deposition and load from non-point sources ware estimated to be 97 ton/yr and 69 ton/yr, deposition is using CAMx model. So estimated total nitrogen discharge into Sihwa-ho was 817 875 ton/yr (846 ton/yr in average). The atmospheric load explains 11.1 11.9% (11.5% in average) of the total nitrogen load Sihwa-ho.

1. 서 론
 2. 연구 방법
  2.1. 연구 대상 지역
  2.2. 대기질 수치 모형 실험
  2.3. 물질수지법
 3. 결과 및 토의
  3.1. 주요 통계 및 문헌 자료
  3.2. 수치모형실험
  3.3. 질소 물질수지 결과
  3.4. 인공습지 및 갯벌에 의한 질소 제거량
 4. 결 론
 REFERENCES

• 최정길((주)지오시스템리서치 환경화학생태부) | Jung-Kil, Choi Corresponding author
• 이효진((주)지오시스템리서치 환경화학생태부) | Hyo-Jin, Lee
• 김태하((주)지오시스템리서치 환경화학생태부) | Tea-ha, Kim
• 최재훈((주)지오시스템리서치 환경화학생태부) | Jea-hun, Choi
• 우준식((주)지오시스템리서치 환경화학생태부) | Jun-Sik, Woo
• 이강웅(한국외국어대학교 환경학과) | Kang-Wung, Lee