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NTIS 바로가기Journal of environmental science international = 한국환경과학회지, v.27 no.3, 2018년, pp.179 - 193
최정길 ((주)지오시스템리서치 환경화학생태부) , 이효진 ((주)지오시스템리서치 환경화학생태부) , 김태하 ((주)지오시스템리서치 환경화학생태부) , 최재훈 ((주)지오시스템리서치 환경화학생태부) , 우준식 ((주)지오시스템리서치 환경화학생태부) , 이강웅 (한국외국어대학교 환경학과)
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 n...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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시화호에서 부영양화가 상시 발생한 이유는? | 시화호는 행정구역상 경기도 안산시와 시흥시 그리고 화성시에 걸쳐 조성된 인공호수로, 1994년 물막 이 공사 이후 내측 기수역에서는 외해수와의 교환이 원활하지 않아 육상으로부터 유입된 오염물질로 인한 부영양화가 상시 발생하였다. 1996년에 “시화호 수질 개선대책”의 일환으로 시화호 상류역의 반월천, 동화천, 삼화천으로부터 유입되는 비점오염물질의 오염부하를 저감하기 위해 인공습지를 2002년 5월부터 설치, 운영하였다(Choi et al. | |
도시지역에서 음식물 섭취로 유입된 질소량을 1인당 단백질 섭취률을 사용하여 추정한 이유는? | 도시지역에서 음식물 섭취로 유입된 질소량은 축산지역에서 육가공으로 유출된 질소를 유입량으로 사용하지 않고, 1인당 단백질 섭취률을 사용하여 추정하였다. 그 이유는 축산지역에서 육가공으로 유출된 질소량(7,710 ton/yr)은 전국에 유통되기 때문에 정확한 유입량을 계산할 수 없었다. 이에 우리나라 연간 1인당 단백질 섭취량인 75. | |
질소는 어떻게 순환하는가? | 질소는 자연생태계인 대기, 물, 토양 생물영역에서 질소기체(N2), 암모늄 이온(NH4+), 암모니아(NH3), 질산성 질소(NO3-), 아질산성 질소(NO2-) 형태로 서로 고정, 질산화, 무기화, 탈질화 작용을 거쳐 자유롭게 순환한다(Scolow, 1999). 질소는 존재 형태에 따라 인류의 식량생산에 중요한 역할을 하고 수중에서는 영양소로 작용하여 수생 식물과 미생물의 성장에 필수 영양소로 활용되지만 과다유입 시 수중의 산소함량을 낮춰 빈산소수괴를 형성하거나, 부영양화 같은 수질 오염 현상을 일으키는 주요 원인으로 작용한다(Smil, 1997). |
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