한국농림기상학회지, 제 13권 제4호(2011) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 13, No. 4, (2011), pp. 165~170
DOI: http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=NRGSBM_2011_v13n4_165
ⓒ Author(s) 2014. CC Attribution 3.0 License.


우리나라 산림과 도시지역의 이산화질소 농도의 시·공간적 패턴

이승우, 이충화
국립산림과학원 산림수토보전과

(2011년 09월 08일 접수; 2011년 12월 06일 수정; 2011년 12월 06일 수락)

Temporal and Spatial Pattern of Ambient Nitrogen Dioxide
Concentration in Forest and Urban Areas, Korea

Seung-Woo Lee, Choong-Hwa Lee
Division of Forest Water and Soil Conservation, Korea Forest Research Institute, Seoul 130-712, Korea

(Received September 08, 2011; Revised December 06, 2011; Accepted December 06, 2011)

ABSTRACT
The ambient concentrations of nitrogen dioxide (NO2) at 65 forest areas were measured every month using passive diffusive samplers from 2002 to 2009 and were compared to those at urban areas in order to investigate the characteristics of temporal and spatial distributions of NO2 from the forest and urban areas. The annually averaged concentrations of NO2 gradually decreased for both areas. The average concentration of NO2 in the forest areas was 8.0 ppb, which was lower than that in the urban areas (i.e., 19.4 ppb) and the ecological standard level of the European Union (i.e., 14.6 ppb). The monthly average of NO2 concentration depicted seasonal variations particularly in the urban areas, showing higher concentration in winter and lower concentration in summer. Strong locality of NO2 concentration distribution illustrates that the locations near the metropolitan areas (e.g., Gyeonggi and Chungnam provinces) had the highest concentration during the measurement period. A significant positive correlation between NOxO emissions and NO2 concentration was observed, suggesting that the magnitude and proximity to sources of atmospheric nitrogen oxides would be important controlling factors.

Keyword: Nitrogen dioxide(), Air pollution, Forest area, National monitoring

MAIN

적요

전국 65개 산림지역을 대상으로 확산형 패시브 샘플러를 이용하여 2002년부터 2009년까지 월 단위로 대기 중 이산화질소(NO2) 농도를 측정하고 도시지역에서의 결과와 비교함으로써 산림지역에서의 이산화질소 농도의 시간적 및 공간적 분포 특성을 규명하였다. 연구기간 동안 산림 내 NO2의 농도는 서서히 감소하는 경향을 보였으며, 전국 산림의 연평균 농도는 8ppb로 도시지역의 평균값(19.4ppb)과 생태적 기준값(14.6ppb)보다 낮았다. 계절별로는 NO2의 농도가 산림지역과
도시지역 모두에서 동절기(3.8ppb)에 높고 하절기(2.8ppb)에 낮은 경향을 보였는데, 도시지역이 더 뚜렷한 계절변화를 보였. 지역별로는 다른 지역에 비해 수도권 지역과 인접한 경기와 충남에서 이산화질소의 연평균 농도가 높게 나타났다. 이러한 지역간 이산화질소 농도 차이의 원인을 규명하기 위해 질소산화물 배출량과 이산화질소 농도 간의 상관관계를 분석한 결과, 유의적인 정의 상관성이 나타남에 따라 질소산화물 배출원의 규모와 근접성이 대기 중 이산화질소의 농도를 결정짓는 중요한 인자임을 시사하였다.

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