확률론적 모의실험을 이용한 공기청정기의 실내공기중 PM10과 $NO_2$ 제거효율에 관한 연구

이철민,김윤신,이태형,김종철,김중호,Lee , Cheol-MIn,Kim , Yoon-Shin,Lee , Tae-Hyung,Kim , Jong-Cheol,Kim , Jung-Ho 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.3

We estimated decreasing rate of indoor air pollutants which are PM10 and $NO_2$ by the air cleaner in indoor environment. This study respectively examined concentration of PM10 and $NO_2$ two times in 34 sites located in Seoul and Kyung-gi Do from April to September in 2003. Sectional period was respectively divided for operating the air cleaner and non-operating the air cleaner. Moreover, questionnaire was executed to grasp physical characteristic of objective building and residential characteristic of residents by using method of self-entry. There was a trend that concentration of PM10 and $NO_2$ separated number of residents during operating period respectively decreased among indoor air. According to the existence of smoker in indoor, both concentration of PM10 and $NO_2$ during operating period decreased in each case, and according to existence of pets, both cases decreased concentration of pollutants by operating the air cleaner. We used Monte-Calro simulation to remove uncertainty and identify efficiency of eliminated pollutants such as PM10 and $NO_2$ by the air cleaner. Average efficiency of removal for PM10 and $NO_2$ were 61.84${\pm}$23.04% and 48.67${\pm}$18.03% respectively.

서울시 지하철역사의 라돈농도분포 조사

이철민,김윤신,김종철,전형진,Lee Cheol-Min,Kim Yoon-Shin,Kim Jong-Cheol,Jeon Hyung-Jin 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5

The radon concentrations were measured to survey distribution of radon concentrations in Seoul subway stations. The radon concentrations in air and water were measured at seventeen subway stations(Mapo, Chungjongno, Sodaemun, Kwanghwamun, Chongno3ga, Ulchiro4ga, Tangdaemun, Sangildong on Line 5;Nowon, Chunggye, Hagye, Kongnung, Taenung, Mokkol, Chunghwa, Sangbong, Myomok on Line 7) using the $RAdtrak^{TM}$ radon gas detector, Pylon AB-5 continuous passive radon detector and liquid scintillation counting method from January to May 1999. The major results obtained from this study were as follows: The long-term mean concentrations of radon were $61.8\;Bq/m^3$ in office, $78.9\;Bq/m^3$ in platform, $38.2\;Bq/m^3$ in concourse and $20.1\;Bq/m^3$ in outdoor, respectively. These levels were less than the action level ($148\;Bq/m^3$) of the U.S. EPA. The highest level of short-term mean concentrations was $116.55\;Bq/m^3$ at Chongno3ga station on the 5th line subway stations, while the lowest mean concentration was $19.55\;Bq/m^3$ at Mokkol station on the 7th line subway stations. The highest concentration of radon in the road water and storing underground water in the subway stations was $234.7\;KBq/m^3\;and\;155.5\;KBq/m^3$ in Sodaemun subway station, respectively. The results suggest that radon concentration in subway stations seems to be affected by ventilation and radon concentratin in underground water in the subway stations.

손해사정업무의 구조적 변경

이철민,Lee, Cheol-Min 한국화재보험협회 1978 防災와 保險 Vol.9 No.-

풍수재보험에 관심가져야

이철민,Lee, Cheol-Min 한국화재보험협회 1990 防災와 保險 Vol.46 No.-

Redescription of Synanthedon velox (Fixsen) and a New Record of Bembecia pavicevici To?evski (Lepidoptera: Sesiidae) from Korea

이철민,아리타 유타카,배양섭,Lee, Cheol-Min,Arita, Yutaka,Bae, Yang-Seop Korean Society of Applied Entomology 2011 한국응용곤충학회지 Vol.50 No.3

Synanthedon velox (Fixsen)는 재기재하고 Bembecia속은 한국미기록종 B. pavicevici To$\check{s}$evski에 의해서 한국에서 처음으로 기록된다. 2종에 대한 기재, 성충의 사진, 생식기 및 국명을 제시한다. 이들의 기주식물을 제시하고 생활사를 간단히 요약하였다. Synanthedon velox (Fixsen) is redescribed and the genus Bembecia is reported for the first time from Korea with B. pavicevici To$\check{s}$evski. Description, images of the adult, genitalia, and the Korean common names of two species are provided. Their host plants are listed and their biology is briefly summarized.

격리된 도시숲, 홍릉숲 나비군집의 특성

이철민,권태성,Lee, Cheol Min,Kwon, Tae-Sung 한국응용곤충학회 2012 한국응용곤충학회지 Vol.51 No.4

녹색 섬의 형태로 존재하는 도시숲은 대도시에 서식하는 생물들의 주 서식공간이다. 도시숲은 면적이 적고, 임연부의 비율이 높다. 이러한 특성 때문에 도시 외곽의 산림의 나비군집에 비해 도시숲의 나비군집는 종다양성이 낮고, 초지종, 숲가장자리종과 생태지위 범위가 더 넓은 일반종의 비율이 높을 것으로 예상된다. 이러한 사실을 밝히기 위해 전형적인 도시숲인 홍릉숲에서 나비를 선조사법으로 주별로 조사하였다. 홍릉숲의 나비군집은 도시외곽의 산림에 사는 나비군집에 비해 종다양성이 월등히 낮았고, 초지종, 숲가장자리종과 일반종의 비율이 높아 예측되는 것과 동일한 결과를 얻었다. 홍릉숲에서 멸종위기 2급종인 쌍꼬리부전나비가 관찰됨으로서, 도시숲은 희귀종의 보존에 중요한 역할을 한다고 할 수 있다. Fragmented urban forests, as green islands within urban area, are the primary habitats for a vast number of different organisms inhabiting large cities. The areas of the urban forests are usually small, and hence, the proportion of the forest edge is relatively high. It is therefore expected that overall butterfly diversity may be lower than that of suburban or rural forests, and that those of grassland species, forest edge species, and generalist species with a wider niche breadth may be richer. Butterflies were surveyed weekly by the line transact method in order to characterize the butterfly community of the Hongneung Forest, a fragmented urban forest in Seoul. Butterfly richness of the study forest is much lower than those of main forests around or in Seoul. Grassland species, forest edge species, and generalist species were found to be richer, which was in agreement with the expected patterns of urban butterfly communities. Also, an endangered species, Spindasis takanonis, was observed in the Hongneung Forest, showing that urban forests play important roles for conservation of rare species.

광릉숲에서 개벌 후 나비군집의 변화

이철민,권태성,Lee, Cheol Min,Kwon, Tae-Sung 한국응용곤충학회 2014 한국응용곤충학회지 Vol.53 No.4

본 연구는 개벌 후 나비군집의 변화를 파악하기 위해서 실시하였다. 조사는 2011년 개벌지, 임도, 산림에서 5월부터 11월까지 선조사법을 실시했다. 조사결과, 총 32종 398개체의 나비가 관찰되었다. 먹이생태지위 범위와 서식처 유형에서의 나비 개체수는 개벌지가 산림보다 유의하게 높았다. 나비의 종수와 종다양도는 개벌지가 산림에 비하여 유의하게 높았다. 개벌지에서 환경부 취약종 기생나비와 은점표범나비의 많은 개체가 확인되었다. 본 연구결과, 개벌로 인하여 형성된 초지는 산림생태계에서 나비의 다양성을 높이는 중요한 역할을 한다. This study was carried out to clarify the change of butterfly community after clear cutting. Butterfly survey was conducted in clear cutting area, forest road, and forest using line transect method from May to November in 2011. A total of 32 species and 398 individuals of butterflies were observed. Abundance of food niche breadth and habitat type was significantly higher in clear cutting area than in forest. Estimated species richness and species diversity were significantly higher in clear cutting area than in forest. In clear cutting area, Leptidea amurensis and Argynnis niobe, vulnerable species, were abundant. This result suggests that grasslands formed by clear cutting play an important role to increase butterfly diversity in forest ecosystem.

A Newly Recorded Species of the Genus Milisipepsis (Lepidoptera, Sesiidae) from Korea

이철민,아리타 유타카,배양섭,Lee, Cheol-Min,Arita, Yutaka,Bae, Yang-Seop Korean Society of Applied Entomology 2011 한국응용곤충학회지 Vol.50 No.4

Milisipepsis속은 M. takizawai (Arita and $\check{S}$patenka, 1989)에 의해서 한국에서 처음으로 기록된다. 기재, 성충사진, 암컷 생식기와 국명을 제시한다. The genus Milisipepsis is reported for the first time in Korea with M. takizawai (Arita and $\check{S}$patenka, 1989). Description, image of the adult, female genitalia, and Korean common name of the species are provided in this paper.

산불 후 개미군집의 단기변화

이철민,권태성,Lee, Cheol Min,Kwon, Tae-Sung 한국응용곤충학회 2013 한국응용곤충학회지 Vol.52 No.3

산불은 산림에 서식하는 곤충들을 죽이거나 분산시킴으로서 그들의 군집을 교란한다. 산불 후 개미군집은 종다양성, 종구성, 기능군 구성이 달라질 것이다. 본 연구는 1996년 강원도 고성에서 발생한 대형 산불 직후 일년동안 산불지와 비산불지의 개미군집의 변화를 비교하기 위해서 수행되었다. 총 16종 1,308개체의 개미가 채집되었고, 산불지에서 15종 696개체, 비산불지에서 13종 612개체가 채집되었다. 산불 후 다양도와 풍부도가 감소될 것이란 일반적인 예상과는 달리 산불지와 비산불지는 개미군집의 풍부도, 종다양성, 종구성, 기능군 구성에서 차이가 없었고, 종풍부도(추정치)는 산불지가 비산불지 보다 오히려 높았다. 그러나 개미의 월별 출현양상은 (풍부종과 전체) 산불지와 비산불지 간에 많이 달랐다. 산불직후인 1996년 5월에는 산불지에서 개미가 더 많았으나, 가을(1996년 9월과 10월)에는 비산불지에서 개미가 더 많았다. 이는 산불지의 환경변화(토양건조 등)로 인해 개미개체군의 변동(개체군의 사멸 또는 이동)이 원인일 것이다. 결론적으로 봄에 발생하는 산불은 토양 깊이 월동하는 개미 군체를 파괴하지 못하기 때문에 산불은 개미상에 유의한 영향을 미치지 못했다. Forest fires disturb communities of forest-dwelling insects by killing or dispersal. Species diversity, species composition, and functional guilds of ant communities will be changed following forest fires. A survey of ants was conducted to find changes in ant communities after a large fire occurred in Goseong within Gwangwon province in South Korea in 1996. In total, 1,308 ants representing 16 species were collected; 696 ants representing 15 species were collected at the burned site, and 612 ants representing 13 species were collected at the unburned site. Contrary to the general expectation which predicts a decrease of diversity and abundance after fire, abundance, species diversity, species composition, and functional guilds of ant communities did not differ between the burned site and the unburned site. Furthermore, estimated species richness was significantly higher at the burned site than at the unburned site. However, monthly occurrences of ants (abundant species and pooled) were different between the burned site and the unburned site. Ants were more abundant at the burned sites than the unburned site just after the fire (May 1996). However, they were more abundant at the unburned site than the burned site in autumn (September and October 1996). This phenomenon might be caused by environmental change (e.g., decrease of soil moisture). In conclusion, the fire did not significantly change ant fauna, as fire in spring cannot destroy ant colonies that are wintering in deep soils.

국내 다양한 실내환경에서 라돈농도 및 거주자의 실효선량 평가

이철민,김윤신,노영만,김기연,전형진,김종철,Lee, Cheol-Min,Kim, Yoon-Shin,Roh, Young-Man,Kim, Ki-Youn,Jeon, Hyung-Jin,Kim, Jong-Cheol 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.4

The objective of this study was to offer basic and scientific data for decision-making of policy for improvement and management of radon, natural radiation gas, in Korea and to form the foundation of radon related international cooperation. Therefore, this study collected and re-analysed the articles on exposure of radon in various indoor environment in journals related environment in Korea since 1980 and estimated the annual exposure dose and effective dose by exposure of radon received by inhabitants in them. The highest pooled average radon concentration of $50.17{\pm}4.08\;Bq/m^3$ (95% CI : $42.17{\sim}58.17\;Bq/m^3$) was found in dwelling house among various indoor environment. All of pooled average radon concentration estimated in this study showed lower than the guideline concentration ($148\;Bq/m^3)$ of US EPA and the Korean Ministry of Environment. The annual effective dose received by inhabitants in various indoor environment was estimated 1.071 mSv/yr. That is equal to annual effective dose (1.0 mSv/yr) by exposure of radon estimated by UNSCEAR.