본 연구는 경기도 파주시에 위치한 파평산의 관속식물상 조사를 위하여 수행하였으며, 이를 토대로 고유종, 희귀 및 멸종식물, 적색식물, 기후변화적응대상 식물, 귀화식물을 조사하였다. 2016년 4월부터 2019년 6월까지 총 13회에 걸쳐 현지조사를 실시한 결과 91과 257속 361종 9아종 36변종 4품종으로 총 410분류군이 확인되었다. 과별로 보면 국화과(46분류군), 벼과(31분류군), 장미과(27분류군), 콩과(18분류군) 순으로 높게 나타난다. 이 중 Chung 등이 지정한 특산식물은 9분류군, 환경부가 지정한 고유종은 6분류군이다. 희귀 및 멸종위기 식물은 IUCN 평가기준을 근거로 국립수목원이 지정한 멸종위기식물 13분류군이, 환경부가 지정한 적색자료집을 근거로 2분류군이 확인된다. 식물구계학적 특정식물은 Ⅳ등급 2분류군, Ⅲ등급 13분류군, Ⅱ등급 11분류군, Ⅰ등급 20분류군으로 총 46분류군이다. Lee (1976)에 따른 자원식물은 식용 182분류군(44.39%), 목초용 166분류군(40.49%), 약용 138분류군(33.65%), 관상용 53분류군(12.93%), 목재용 22분류군(5.37%), 다용도 11분류군(2.68%), 섬유용 6분류군(1.46%), 산업용 1분류군(0.24%) 순이며, 산림청 지정 자원식물은 식용 293분류군(71.46%), 산업용 186분류군(45.37%), 다용도 173분류군(42.20%), 의약용 125분류군(30.48%), 유해성 식물 84분류군(20.49%), 향료 16분류군(3.9%)순이다. 기후변화 적응대상식물은 7분류군이 확인되었으며, 귀화식물은 27분류군으로 귀화율 6.58%, 도시화지수 8.43%를 나타내었다. 본 파평산 일대의 조사로 본 결과는 파주 북부의 DMZ 접경지역의 자연환경 및 자연자원의 조사 및 보존에 필요한 기초자료로 활용될 수 있을 것으로 판단된다. 한편, 증거표본을 기준으로 하여 관속식물 목록을 작성하였기 때문에 조사과정에서 누락되었을 가능성을 고려하면 파평산의 관속식물의 다양성은 더 높아질 수 있을 것이다. 이러한 조사 연구를 통해 최근 높은 빈도로 발생하는 산불의 예방, 인위적 간섭에 의한 외래식물의 침입 및 산림훼손의 방지 등을 더 정확히 파악하고, 그를 활용할 더욱 적극적이고 다양한 노력이 필요할 것이다.

It has continuously promoted to scale up the agricultural management body in order to cope with the market-opening pressure such as the UR negotiation, the DDA negotiation, and more conclusions of FTAs and to enhance the competitiveness of our agriculture. This study evaluated the factors associated with production organization participation centered on environmentally-friendly agriculture farmers in order to improve the production efficiency of environmentally-friendly agriculture in the aspect of production. In order to achieve this objective, this study evaluated the factors that contributed to participating in an organization using the bivariate probit model focusing on environmentally-friendly agriculture farmers in Chungnam. This study examined the validity and reliability of the study model through exploratory factor analysis. The results of factor analyses identified four factors: “distribution”, “production”, “organization operation”, and “social capital”. The results of the bivariate probit model showed that distribution significantly affected production activities and distribution, organization operation, agricultural income, and gender significantly influenced sale activities. Environmentally-friendly production organization had not been able to provide the productive support that was needed for local farmers to produce environmentally-friendly agricultural products in a region. Additionally, farming education did not provide the information needed by the farmers. Although producers had a network within a production organization, it was operated mainly for administrators. Therefore, participants felt somewhat lacking. This study identified the level of organization of producer organizations in Chungnam area, where environmentally-friendly agriculture is well activated. This study suggested implications for future production organization participation by evaluating factors affecting participation quantitatively.

Purpose – Recently, the fourth industrial revolution is rapidly progressing, and the central government-led innovation system is not able to flexibly cope with changes in science and the economy and society. To solve these problems, it is necessary for local governments, which can easily identify and flexibly respond to local sites, to become self-centered and ready to respond more quickly to massive changes. Through this research, this study investigated the awareness of the elements of Jeonnam Province's capabilities in the field of science and technology policy, the importance of R&D, and how network cooperation among the base institutions might affect performance. Research design, data, and methodology – In fact, the data used in this study only 115 people were polled, excluding five who did not respond to the necessary variables. The methods of the survey were sampled, and the means of the survey were investigated via a self-contained electronic file (e-mail). Statistical analysis, including hypothesis verification, was performed by SPSS 19. The regression analysis was used. Results – All factors significantly affect performance by dividing them into five sub-fields: R&D strategic establishment, R&D demand survey, R&D planning, R&D evaluation, and R&D project management. These results suggest the importance and need for local scientific technology policy capabilities. Besides, it was confirmed that the relationship between regional science and technology policy capabilities and performance was moderated by the recognition of the importance of science technology and network cooperation among the core organizations. Conclusions – As a result, independent variables regarding the capabilities of each scientific technology policy were found to be statistically significant and have a significant effect on performance. Second, the regression analysis has shown the moderation effects of R&D importance awareness between the capabilities of science and technology policies and their performance. On the other hand, a regression analysis showing that the capabilities of science and technology policies and network cooperation between the base regions were not significant, indicating that there is no effect of moderation of network cooperation between the base regions between the capabilities of science and technology policies and performance.

This research investigated the characteristics of CO, CO2, and NO2 concentrations at main subway stations in Busan. The annual mean CO concentrations at the Suyeong and Nampo stations were 0.75 ppm and 0.48 ppm, respectively. Annual CO2 concentration at the Seomyeon 1- platform was 649 ppm. The NO2 concentrations at the Seomyeon 2- waiting room and the Yeonsan station were 0.048 ppm and 0.037 ppm, respectively. CO concentration was highest at two times of the day, and was proportional to the number of passengers commuting to and from work. The CO and CO2 concentrations were highest in winter, but NO2 concentration was highest in spring. CO and CO2 concentrations were highest on Saturday and lowest on Sunday. The correlation of CO and NO2 concentrations measured at the subway stations with those at the ambient air quality station were highest at the Seomyeon 1 and 2- waiting room and Jeonpodong. The correlation was lowest at the Yeonsan and Yeonsandong station. The number of days when CO2 concentration exceeded 700 ppm over the last three years at the Seomyeon 1- platform was 174. The findings of this research are expected to deepen understanding of the fine particle characteristics at subway stations in Busan and be useful for developing a strategy for controlling urban indoor air quality.

This research investigated the characteristics of PM10 and PM2.5 concentrations at the main subway stations in Busan. Annual mean PM10 concentrations at the Seomyeon 1- waiting room and platform were 51.3 ㎍/㎥ and 47.5 ㎍/㎥ , respectively, and the annual PM2.5 concentration at the Seomyeon 1- platform was 28.8 ㎍/㎥ . PM2.5/PM10 ratio at Seomyeon 1-platform and Dongnae station were 0.58 and 0.53, respectively. Diurnal variation of PM10 concentration at subway stations in Busan was categorized into four types, depending on the number of peaks and the times at which the peaks occurred. Unlike the areas outside of the subway stations which reported maximum PM10 concentration mostly in spring across the entire locations, the interiors of the subway stations reported the maximum PM10 concentration in spring, winter, and even summer, depending on their location. PM10 concentration was highest on Saturday and lowest on Sunday. The numbers of days when PM10 concentration exceeded 100 ㎍/㎥ and 80 ㎍/㎥ per day over the last three years at the subway stations in Busan were 36 and 239, respectively. The findings of this research are expected to enhace the understanding of the fine particle characteristics at subway stations in Busan and be useful for developing a strategy for controlling urban indoor air quality.

본 연구는 유아교육공동체 구현을 위한 부모-교사 간 동반자 관계 형성을 장기적 목적으로 다문화가정 어머니가 유아교육기관에서 경험하는 유아교사에 대한 인식을 알아보고자 하였다. 이에 농촌지역에 거주하는 다문화가정 어머니 11명을 대상으로 유아교육기관 참여도, 신뢰도, 소속감, 소통의 네 가지 면담준거로 반구조적인 질문의 개별 면담을 실시하였다. 연구 결과, 어머니들의 교사에 대한 인식은 ‘어머니 입장을 배려하는 친절한 선생님’, ‘적극적 관심과 돌봄을 주는 고마운 선생님’, ‘우리 아이들이 좋아하는 선생님’, ‘교육에 절대적인 신뢰감을 주는 선생님’, ‘특별함이나 편견을 갖지 않는 평등한 선생님’이라는 긍정적 인식이 도출되었다. 반면, ‘봉사나 도울 기회를 적 극적으로 요청하지 않는 선생님’, ‘부모공동체 형성에는 소극적인 선생님’의 다소 부정적 인식이 도출되었다. 이를 통해 다문화가정 어머니와 교사와의 동반자적 관계를 통한 유아교육공동체 실현 과 정착을 위하여 부모, 교사와 기관의 역할에 대한 시사점을 논의하였다.

This study examined the efficiency of satellite images in terms of detecting wheat cultivation areas, and then analyzed the possibility of climate change through an correlation analysis of time series climate data from the western regions of Gyeongnam province, Korea. Furthermore, we analyzed the effect of climate change on wheat production through a multiple regression analysis with the time series wheat production and climate data. A relatively accurate distribution was achieved on the wheat cultivation area extracted through satellite image classification with an error rate of less than 10% in comparison to the statistical data. Upon correlation analysis with time series climate data, significant results were displayed in the following changes: the monthly mean temperature of the seedling stage, the monthly mean duration of sunshine, the monthly mean temperature of the growing period, the monthly mean humidity, the monthly mean temperature of the ripening stage, and the monthly mean ground temperature. Accordingly, in the study area, the monthly mean temperature, precipitation, and ground temperature generally increased whereas the monthly mean duration of sunshine and humidity decreased. The monthly mean wind speed did not display a particular change. In the multiple regression analysis results, the greatest effect on the production and productivity of wheat as climate factors included the annual mean humidity of the seedling stage, the annual mean temperature of the wintering period, and the annual mean ground temperature of the ripening stage. These results demonstrate that there is a change in wheat production depending on the climate change in the study area. in addition, it is determined that this study will be used as important basic data in the resolution of food security problems based on climate change.

We estimated changes in temperature-related extreme events over South Korea for the mid and late 21st Century using the 122 years (1979-2100) data simulated by RegCM4 with HadGEM2-AO data as boundary conditions. We analyzed the four extreme events (Hot day: HD, Tropical day: TD, Frost day: FD, Icing Day: ID) and five extreme values (Maximum temperature 95/5 percentile: TX95P/TX5P, Minimum temperature 95/5 percentile: TN95P/TN5P, Daily temperature range 95 percentile: DTR95P) based on the absolute and relative thresholds, respectively. Under the global warming conditions, hot extreme indices (HD, TD, TX95P, TN95P) increase, suggesting more frequent and severe extreme events, while cold extreme indices (FD, ID, TX5P, TN5P) decrease their frequency and intensities. In the late 21st Century, changes in extremes are greater in severe global warming scenario, RCP8.5 rather than RCP4.5. HD and TD (FD and ID) are expected to increase (decrease) in the mid 21st Century. The average HD is expected to increase by 14 (17) days in RCP4.5 (8.5). All the percentile indices except for DTR95P are expected to increase in both RCP4.5 and RCP8.5. In the late 21st Century, HD and TD are significantly increased in RCP8.5 compared to RCP4.5, but FD and ID are expected to be significantly reduced. HD is expected to increase mainly in the southwestern region, twice (+41 days) in RCP8.5. TD is expected to increase by 17 days in RCP8.5, which is 5 times greater than that in RCP4.5. TX95P, TN95P and TX5P are expected to increase by about 2°C and 4°C in RCP4.5 and RCP8.5, respectively. TN5P is expected to increase significantly by 4°C and 7°C in RCP4.5 and RCP8.5, respectively.

최근 대내외적인 사회환경의 변화는 식품 소비행태의 변화로 이어지고 있다. 그동안 1차 산업으로 인식되던 농촌의 지역경제를 활성화 하기 위해 6차산업의 필요성이 높아지고 있으며, 정부에서도 ‘지역단위 6차산업화 시스템’을 통해 정책적으로 농촌지역의 6차산업을 지원하고 있다. 농특산품의 판매에 가장 큰 영향을 주는 요인은 농특산품의 패키지 상태 및 디자인 임에도 불구하고, 대부분 해당 지역의 정체성과 관련이 없거나, 농특산품의 특성을 드러내지 못하거나, 타 제품과 차별화되지 못한 실정이다. 본 연구에서는 울진군 지역특화상품인 해방풍의 브랜드 및 제품군별 패키지 디자인을 개발하고, 이를 통해 울진군 지역경제 활성화를 도모하고자 하였다. 먼저, 시판 제품의 디자인을 조사하였고, 울진군의 지역정체성 및 해방 풍의 특성을 동시에 표현할 수 있는 BI를 기획하였다. 울진군 해방풍의 BI는 바닷바람을 맞고 자란 고급 먹거리라는 이미지를 고려하였으며, 이를 활용하여 차류, 생채류, HMR류 등, 각 제품군별 패키지 디자인을 제안하였다. 해방풍 제품의 패키지 디자인은 친환경, 간편식, 프리미엄(고급) 등 최근 소비자들의 식품 소비행태에 어울리게 개발하였다.

Purpose - Since the local liquor industry uses the agricultural products produced in the region as the main raw material, cultivation of the industry can be a way to expand the demand for domestic agricultural products and can contribute to the income increase of the farmers. In addition, the local liquor industry can be developed into a region-specific industry differentiated from other regions by linking with the region's tourism resources. Therefore, in order to achieve various derivative effects through promotion of the local liquor industry, it is necessary to precisely understand the factors related to the purchase and consumption of local liquor which then will lead to an increase in consumption. This study analyzes the current status and problems of local liquor industries and examines the determinants of consumers' purchasing decisions of regional specialties through questionnaires. We will then propose a strategy to promote consumption of locally produced alcoholic beverages. Research design, data, and methodology - An online Domestic Consumer Survey was conducted to identify the actual purchases and uses of local liquors for 500 consumers nationwide. Based on the questionnaire results, the analysis uses an ordered probit model. Results - As a result of analyzing the effect of consumer characteristics on the purchase of local liquors, it was found that the average cost of drinking, income, local specialty, brewery experience, and health concerns have a significant effect on gender, drinking frequency. All the variables except the participation in the training of the special provincial manufacturing method were found to be statistically significant. The statistical significance was at a 1% significance level for the remaining factors excluding the bottle design. This shows that the higher taste, quality, price, and harmony with food, the higher the probability of purchasing local liquors. Conclusions - In the analysis of factors influencing the purchase intention of local liquors, it was found that factors such as taste, quality, price, and harmony with food had a significant effect. Given the diversity of purchasing factors, the importance of diversification strategies is emphasized again. In particular, it will be important to secure wide publicity for local liquors through various PR strategies.

The objective of this study was to estimate the trends of air quality in the study area by analyzing monthly and seasonal concentration trends obtained from sampled data. To this aim, the mass concentrations of PM2.5 in the air were analyzed, as well as those of metals, ions, and total carbon within the PM2.5. The mean concentration of PM2.5 was 22.7 ㎍/㎥. The mass composition of PM2.5 was as follows: 31.1% of ionic species, 2.2% of metallic species, and 26.7% of carbonic species (EC and OC). Ionic species, especially sulfate, ammonium, and nitrate, were the most abundant in the PM2.5 and exhibited a high correlation coefficient with the mass concentration of PM2.5. Seasonal variations of PM2.5 showed a similar pattern to those of ionic and metallic species, with high concentrations during winter and spring. PM2.5 also had a high correlation with the ionic species NO3 - and NH4 +. In addition, NH4 + was highly correlated with NO3 -. Through factor analysis, we identified four controlling factors, and determined the pollution sources using the United States Environmental Protection Agency(U.S. EPA) pollution profile. The first factor, accounting for 19.1% of PM2.5 was attributed to motor vehicles and heating-related sources: the second factor indicated industry-related sources and secondary particles, and the other factors indicated soil, industry-related and marine sources. However, the pollution profile used in this study may be somewhat different from the actual situation in Korea, since it was obtained from US EPA. Therefore, to more accurately estimate the pollutants present in the air, a pollution profile for Korea should be produced.

본 논문의 목적은 교회 공간 활용을 분석하여 지역교회가 사회와 무엇을 공유하고 영향을 끼쳤는지를 밝히는데 있다. 이 목적을 위해 정동제일 교회를 택하여 해방 후 교회 공간이 어떻게 활용되었는지 신문, 보고서, 기사 등을 분석하였다. 여기에서 공간은 단지 물리적인 공간만이 아닌 인간의 활동과 공간적인 실천이 결합된 공간을 의미한다. 이것을 “사회적 공간”(social space)으로 부른다. 해방공간에서 다양한 단체와 기관들은 자신들의 활동을 위하여 공간이 필요했다. YMCA나 학교강당, 천도교 강당 등은 실내공간으로 선호도가 높았다. 특히 교회건물은 예배공간만이 아닌 다양한 활동 공간으로 사람들에게 제공되었다. 서울에 위치한 정동제일교회는 수도권에서 많은 사람들이 선호한 공간이었다. 김인영 목사가 재직하던 시기를 전후로 공간 활용도가 더욱 높았다. 그는 일제 강점기에 신흥우와 함께 YMCA와 적극신앙단에서 활동했으며, 해방 후에는 한국기독교연합회에서 활동했다. 기독교 정신 위에 대외적으로 활동했던 그의 행동은 정동제일교회 공간에서도 그대로 투영되었다. 비록 친일행적을 계기로 이전처럼 정치 일선에 나서지는 않았지만, 그는 시대적인 혼란을 극복하고 새로운 국가를 기대하며 시민사회에 공간을 제공하였다. 더 나아가 여러 시민단체들은 세계정세를 파악할 수 있도록 세계적인 석학이나 종교지도자들을 초청하여 시민들의 의식을 함양시켰다. 교회는 시민들의 다양한 욕구들 즉 문화적인 것, 경제적인 것, 결혼식과 장례식 등의 일상적인 것들을 위하여 공간을 제공하였다. 이것은 교회가 시민들의 생각과 욕구를 공유했음을 의미한다. 특히 이승만과 관련된 단체들에게 결집할 수 있는 공간을 제공함으로 그의 정치활동을 지원하였다. 반탁과 관련된 집회와 강좌는 서울지역의 우파를 결집시켰고, 전국대회를 성공적으 로 개최한 독촉국민회는 1948년 제헌국회에서 다수당이 되어 정국을 주도 하였다. 정리하면 정동제일교회 공간은 사회적 관심을 공유하는 것을 넘어서 새로운 국가 건설을 세우는데 그 힘을 결집시키는데 영향을 주었다는데 의의가 있다.

The National Institute of Environmental Research (3rd KONEHs) conducted a survey of 280 residents in Ulsan, Suwon and Asan, and the concentration of heavy metals in the blood and urine were also analyzed. In case of blood lead concentration, Ulsan 2.27 ㎍/㎗, Suwon 2.08 ㎍/㎗, and Asan 1.75 ㎍/㎗, the high peak in Ulsan, and the low peak in Asan. In case of cotinine concentration, Ulsan smoking(609.16 ㎍/g_ct) is higher than nonsmoking(74.07 ㎍/g_ct), as Suwon and Asan smoking(416.72 ㎍/g_ct, 903.21 ㎍/g_ct) is higher than nonsmoking(72.72 ㎍/g_ct, 18.06 ㎍/g_ct), smoking group is higher than nonsmoking group in all areas revealed statistically significant correlation(p<0.01). In considering results synthetically, these study results are an aid to constructing environmental health science-side heavy metal management measure education programs for normal residents.

대한민국을 비롯하여 전 세계는 급격한 성장을 이루었지만 반면 환경오염으로 인하여 여러 가지 어려움을 겪고 있다 이에 신재생에너지, 녹색시장, 녹색산업을 새로운 국가 성장동력으로 활용하려는 노력을 보이고 있다. 가장 큰 환경 오염 요인인 배기가스 배출을 줄이기 위하여 우리나라 지자체에서는 자전거 정책을 통해 도시 브랜드를 제고시켜 녹색 교통 문화를 정착시키려고 많은 노력을 기울이고 있다. 하지만 지자체의 정체성을 고려하지 않고 무분별하게 자전거 도로를 시공하여 도시환경과 도시경관의 이미지 창출을 하지 못하고 있으며 도시 마케팅 요소로서 도시만의 차별화된 브랜드임을 인식하지 못 하고 개발하고 있는 상황이다. 진천군 또한 자전거 도로가 도시경관 요소로서 중요함을 인식함에도 불구하고 정체성을 고 려한 디자인적 접근이 전혀 이루어져 있지 않는 것이 사실이다. 따라서 본 연구는 지자체중 진천군을 대상으로 자전거 도로를 재정비하여 관광문화 활성화를 도모하고자 한다. 이를 통해 천년 역사의 명소인 종박물관에서부터 농다리까지 잇는 자전거길을 활용하여 역사문화 및 여가관광문화 활성화 방안 및 농다리 주변 광장을 클린 생태문화관광지로 재조성할 계획 이며, 이를 바탕으로 3가지 컨셉의 자전거 도로를 제안하였다. 이로 인해 군민에게는 자부심을 주고 방문객에게는 호기심을 불러 일으켜 대한민국 대표 자전거길로 자리매김하고 진천군의 밝고 긍정적인 이미지를 알리는 데 도움을 주고자 한다.

To analyze main factors of size planning of community facilities that were created as part of development of a rural area, the present condition of factors deciding size of community facilities was analyzed, factors that influence size planning by the type of community facility were drawn with Delphi anaysis. The results of analyzing the present condition of size planning factors of community facilities show that facilities have been generally planned as multi-purpose and multi-functional facilities. And on the basis of the purpose of facilities, their functions and organization, and their operation programs, facilities are classified into community-centered, agritourism-centered, and combined ones. Using Delphi analysis, major factors that could affect size planning of community facilities were drawn on 26 community-centered, 28 agritourism-centered, and 30 combined. And the factors tended not to be applied well for size planning of community facilities.

This study aims to make a revitalizing plan for managing and maintaining of facilities which were installed after the rural development projects. The survey was conducted to examine some issues of operating facilities from the developing plan. There were some factors that should be considered in the establishment stage of the project plan when promoting rural development projects. Among them, the preservation and maintenance of rurality, consistency with business plans, connectivity with local resources, and ease of maintenance were less reflective than its importance. And for each facility, systematic consulting on appropriate scale and operational management plans and detailed planning is needed.. It's also necessary to plan action so that the local community can lead. The current or future rural development project will be succeeded when local governments support to strengthening their local groups or people’s abilities.

This study is to identify the heat vulnerability area as represented by heat risk factors which could be attributable to heat-related deaths. The heat risk factors were temperature, Older Adults(OA), Economic Disadvantage(ED), Accessibility of Medical Services(AMS), The population Single Person Households(SPH). The factors are follow as; the temperature means to the number of days for decades average daily maximum temperature above 31℃, the Older Adults means to population ages 65 and above, furthermore, the Economic Disadvantage means to the population of Basic Livelihood Security Recipients(BLSR), the Accessibility of Medical Services(AMS) means to 5 minutes away from emergency medical services. The results of the analysis are showed that the top-level of temperature vulnerability areas is Dong, the top-level of vulnerability OA areas is Eup, the top-level of AMS vulnerability is Eup. Moreover, the top-level of vulnerability ED area appears in the Eup and Dong. The result of analysing relative importance to each element, most of the Eup were vulnerable to heat. Since, there are many vulnerable groups such as Economic Disadvantage, Older Adults in the Eup. We can be figured out estimated the number of heat-related deaths was high in the Eup and Dong by the data of emergency activation in the Chungcheongnam-do Fire Department. Therefore, the result of this study could be reasonable.

The purpose of this study is to quantitatively analyze the effects of a restoration project on the decrease in the temperature in the surrounding areas. The thermal environment characteristics of the investigation area were analyzed using the meteorological data from the Busanjin Automatic Weather System which is closest to the target area. The terrain data of the modeling domain was constructed using a digital map and the urban spatial information data, and the numerical simulation of the meteorological changes before and after the restoration of the stream was performed using the Envi-met model. The average temperature of the target area in 2016 was 15.2℃ and was higher than that of the suburbs. The monthly mean temperature difference was the highest at 1.1℃ in November and the lowest in June, indicating that the temperatures in the urban areas were high in spring and winter. From the Envi-met modeling results, reductions in temperature due to stream restoration were up to 1.7℃ in winter, and decreased to 3.5℃ in summer. The effect of temperature reduction was seen in the entire region where streams are being restored.

Temporal and spatial variations in surface ozone concentrations in Busan were investigated by using observation data from urban air quality sites during 2001-2016. The annual ozone concentrations showed a significant increasing trend of +0.40 ppb yr-1 in this period, with a more rapid increase of +0.81 ppb yr-1 since 2010. For the monthly analysis, the increase in ozone concentration was the greatest in August (+0.68 ppb yr-1). These ozone trends were due mainly to rising temperature (+0.05℃ yr-1) and weak decreasing precipitation (－6.42 mm yr-1). However, the extreme weather events (heat wave, localized heavy rain, etc.) lead to an increase in short-term variability of ozone since 2010. The relatively low ozone concentrations in the downtown area were caused by high NOx emissions from mobile sources. The increases in ozone concentrations were observed at most of the air quality monitoring sites due to the reductions in anthropogenic emissions of NOx during 2001-2015. However, in the southern coastal area, lower rates of increase in ozone concentrations were observed by –0.10~0.25 ppb yr-1 due to the significant NOx emitted by ships in the Busan port and Busan new port.

The aerosol chemical components in PM2.5 in several regions (Seoul, Busan, Daejeon, and Jeju Island) were investigated with regard to their concentration characteristics and optical properties. The optical properties of the various aerosol components (e.g., water-soluble, insoluble, Black Carbon (BC), and sea-salt) were estimated using hourly and daily aerosol sampling data from the study area via a modeling approach. Overall, the water-soluble component was predominant over all other components in terms of concentration and impact on optical properties (except for the absorption coefficient of BC). The annual mean concentration and Aerosol Optical Ddepth (AOD) of the water-soluble component were highest in Seoul (at the Gwangjin site) (26 μg/m3 and 0.29 in 2013, respectively). Further, despite relatively moderate BC concentrations, the annual mean absorption coefficient of BC (21.7 Mm-1) was highest in Busan (at the Yeonsan site) in 2013, due to the strong light absorbing ability of BC. In addition, high AODs for the water-soluble component were observed most frequently in spring and/or winter at most of the study sites, while low values were noted in summer and/or early fall. The diurnal variation in the AOD of each component in Seoul (at the Gwangjin site) was slightly high in the morning and low in the afternoon during the study period; however, such distinctions were not apparent in Jeju Island (at the Aweol site), except for a slightly high AOD of the water-soluble component in the morning (08:00 LST). The monthly and diurnal differences in the AOD values for each component could be attributed to the differences in their mass concentrations and Relative Humidities (RH). In a sensitivity test, the AODs estimated under RH conditions of 80 and 90% were factors of 1.2 and 1.7 higher, respectively, than the values estimated using the observed RH.