• 한국환경보건학회지
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• 제39권6호
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• pp.492-504
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• 2013

Objectives: This analysis seeks to evaluate the impact of environmental health factors (EHF; e.g. hospital beds per capita, employees of medical institutions) on extreme-heat vulnerability assessment in Busan Metropolitan City during 2006-2010. Methods: According to the vulnerability concept suggested by the Intergovernmental Panel on Climate Change (IPCC), extreme-heat vulnerability is comprised of the categories of Exposure, Sensitivity, and Adaptive Capacity (including EHF). The indexes of the Exposure and Sensitivity categories indicate positive effects, while the Adaptive capacity index indicates a negative effect on extreme-heat vulnerability. Variables of each category were standardized by the re-scaling method, and then each regional relative vulnerability was computed with the vulnerability index calculation formula. Results: The extreme-heat vulnerability index (EVI) excepting EHF was much higher in urban areas than in suburban areas within the metropolitan area. When EHF was considered, the difference in the EVI between the two areas was reduced due to the increase of the Adaptive capacity index in urban areas. The low EVI in suburban areas was induced by a dominant effect of natural environmental factors (e.g. green area) within the Adaptive capacity category. Conclusions: To reduce the vulnerability to extreme heat in urban areas, which were more frequently exposed to extreme heat than others areas, public health and natural environments need to be improved in sensitive areas.

• Human Ecology Research
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• 제54권2호
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• pp.141-154
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• 2016

This study examined the nature of multi-cultural families' housing problems living in South Korea. A qualitative research was conducted through in-depth interviews with immigrant women from three Southeast Asian countries. The subjects of this study were 15 married immigrants from the Philippine, Cambodia, and Vietnam living in Seoul. The major findings were as follows: firstly, reciprocity for the in-between person and environment: the preferred to blend into Korean society instead of making a community based on national origin. Secondly, intention to housing: all participants were passive about moving and the Vietnamese and Cambodians placed more importance on the family community than the Filipinas. Thirdly, meaning of housing and interaction: for the most important area in the house, the Vietnamese and Cambodians stated that rooms were for a couple and treated family space more importantly than Filipinas who pursuit personal comfort. Fourthly, housing adaptation process: adapting to climate difference between home countries and Korea was the biggest difficulty. Fifthly, residential satisfaction/dissatisfaction: mostly satisfied with housing facilities; however, they were dissatisfied with the number of rooms and house size due to a necessity for personal space. In conclusion, ideas implied from native country of married immigrants in multicultural families did not change significantly in preference of the current environment. The needs for an ethnic community was not great, because they seemed able to assimilate positively by living with a Korean husband and relatives. Gradual assimilation through a cultural acculturation process can be considered desirable.

• 환경영향평가
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• 제19권6호
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• pp.607-615
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• 2010

Urban green space is often at the centre of the debate on urban substantiality because it provides functions of space, e.g. for wildlife, recreation, growing vegetables, psychological wellbeing, social interaction, etc. Traditionally, the various functions of urban green spaces clearly show that green spaces contain important values that contribute to the overall quality of urban life. After Kyoto protocol, it has becoming important to more accurately evaluate carbon uptake by urban green space. Many studies have analyzed the benefits, costs, and carbon storage capacity associated with urban green space. These studies have been limited by a lack of research on urban tree biomass and carbon uptake by soil, such that estimates of carbon storage in urban systems. This study calculate more accurately the amount of carbon uptake by urban green space. This study also complement the existing methods to estimate the urban green space carbon uptake. It has been studied how to evaluate carbon uptake function of urban green space. The surface area of urban green space increased 5% by complemented method and carbon uptake is also increased. Based on this result, the carbon uptake per capita was analysed and compared to the area of carbon uptake. And this study discussed the reasons for the differences between the new and earlier estimates, as well as implications for our understanding of the global carbon cycle. In conclusion, these results could contribute as preliminary data to policy makers when climate change adaptation strategy is established.

• 한국재난정보학회:학술대회논문집
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• 한국재난정보학회 2015년 정기학술대회
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• pp.287-289
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• 2015

최근 기후변화로 인하여 태풍 및 집중호우로 인한 극한 강우사상의 발생빈도가 증가하고 있으며, 급격한 도시화로 인한 유역 내 불 투수 면적이 늘어나고 있다. 이로 인해 재산피해가 증가하고 있어 기후 변화를 고려한 미래 하천범람 등 홍수피해를 경감시키기 위한 홍수저감 대안 선정이 필요하다. 따라서 본 연구에서는 기후변화를 고려하여 목표기간별로(기준년도 : 1971~2010년, 목표기간 I : 2011~2040년, 목표기간 II : 2041~2070년, 목표기간 III : 2071~2100년) HEC-HMS모형을 이용하여 기후변화에 따른 홍수량을 산정하였다. 또한, 배수펌프(A~E)와 저류지(A~E)를 홍수저감 대안으로 설정하여 HEC-RAS모형을 통해 대안별 홍수위를 산정하였다. 지형자료 및 홍수위를 이용하여 홍수범람도를 도시하였으며, 다차원 홍수피해액산정법(Multi dimension - Flood Damage Analysis, MD-FDA)을 이용하여 홍수피해 저감을 위한 대안별 경제성분석을 실시하였다. 홍수저감효과를 분석한 결과 배수펌프를 설치했을 경우 홍수위는 최소0.06m, 최대0.44m 감소하였고, 저류지는 최소0.01m, 최대1.86m 감소하였으며, 침수면적은 최소 0.3%, 최대 32.64% 감소되는 것을 확인할 수 있었다. 또한, 경제성분석을 실시하여 대안별 편익 비용비를 비교한 결과 목표기간I에서는 저류지 E, 목표기간II, 목표기간III에서는 배수펌프D가 기후변화를 적응을 위해 타당한 홍수저감 대안으로 판단되었다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2012년도 학술발표회
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• pp.94-94
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• 2012

기후변화 대응은 온실가스 배출의 감축 및 흡수원을 확대하는 완화(mitigation)와 기후변화로 인한 영향과 취약성을 평가하여 피해를 최소화하는 적응(adaptation)이 상호 균형을 이루어야 한다. 지금까지 우리나라를 포함한 국제사회는 대부분 완화를 위해 노력해 왔지만 최근에 들어 완화만으로는 기후변화의 영향을 회피하기 어렵다는 사실이 인식되면서 적응 연구가 다양하게 이루어지고 있다. 이러한 상황 가운데 적응 계획의 실현화를 위해서 기후변화의 불확실성을 고려한 의사 결정에 관한 연구가 반드시 뒷받침 되어야 한다. 기존의 일반적인 의사결정은 다양한 미래 시나리오들 하에 가장 높은 효용을 가져오는 최적(Optimal)의 대안을 채택하는 고전적 결정분석(Classical Decision Analysis)의 프레임을 사용하였다. 그러나 기후변화로 인해 미래 기후 예측 시나리오의 불확실성이 증대되면서 최근에는 최적의 대안을 선정하는 것에 대한 의문이 제기되며 새로운 기법에 대한 연구가 이루어지고 있다. 본 연구는 기후변화의 불확실성을 고려하기 위한 새로운 의사결정 기법인 로버스트 의사결정(Robust Decision Making, RDM)을 실제유역의 적용을 통해 제안하고자 한다. 로버스트 의사결정은 RAND에서 개발한 것으로 최적의 대안을 채택하는 것 대신 모든 가능한 시나리오 가운데 가장 안정적인 전략을 채택한다는 것에서 기존의 의사결정 체계와 차이가 있다. 연구의 적용은 안동-임하댐 유역을 대상으로 온실 가스 배출 시나리오 A1B, A2, B1시나리오에 대해 15개의 GCMs에서 산출된 기후자료를 기반으로 기후변화의 시나리오를 작성하였으며, 다양한 측면의 대안을 설정하여 용수공급량을 평가하였다. 연구의 결과로 산정될 각 대안 별 안정적인 정도와 취약한 시나리오에 대한 정보는 기후변화의 불확실성을 전제한 의사결정을 할 때 로버스트 의사결정이 갖는 장점이 될 수 있다.

• 한국농공학회논문집
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• 제61권6호
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• pp.31-40
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• 2019

In order to implement practical alternatives to proactively cope with the agricultural drought, the potential vulnerability of irrigation pumping stations to agricultural drought was quantitatively evaluated. Data for the 124 pumping stations which are correlatable to the three proxy variables, i.e. exposure, sensitivity, and adaptive capacity was collected by the Korea Rural Community Corporation, and then standardized considering distribution of each data set. Finally, the vulnerability index was calculated by multiplying the weights determined by the expert survey. The results showed that the vulnerability index ranged from 0.709 to 0.331 and the most vulnerable pumping stations such as Judam, Wongoo and Jinahn were mostly located in Gyeongbuk province likely because of the climatological characteristics with high temperature and low rainfall around this area. In addition, it was found that the adaptive capacity was a dominant factor comparing to exposure or sensitivity proxy variables in contributing to the vulnerability. It is therefore recommended that more practical alternatives should be employed to effectively reduce the vulnerability of an individual pumping station to agricultural drought. Furthermore, the corresponding data related to adaptive capacity should be systematically organized and managed at a field level to design reliable adaptation strategies.

• 한국환경농학회지
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• 제37권4호
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• pp.324-332
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• 2018

곤충은 변온동물로 육지생태계에서 주로 서식하면서, 식물의 생체량 조절, 종다양성 유지에 중요한 역할을 한다. 주변온도는 변온동물인 곤충의 생리적 반응속도, 뿐만 아니라 생존과 분포를 결정하며, 기후변화에 영향을 준다. 본 연구는 높은 온도에서 곤충의 적응성에 관련있는 유전자를 전사체를 이용하여 동정하였다. 고온에서 사육된 배추좀나방 유충의 지방체로부터 차세대 염기서열 분석법을 이용하여 전사체를 확보하였다. 대사중심인 지방체에서 구조단백질, 열충격단백질, 항산화단백질, 해독효소 들이 동정되었다. 이들 중에서 표피단백질(표피단백질, 키틴합성효소, 엑틴, 카이틴 합성), 스트레스관련단백질(시토크롬 P450), 열충격단백질, 한산화단백질은 발현이 증가되었으나, glutathione S transferase 발현은 오히려 감소되었다. 이상의 결과는 기후변화의 주요인인 온난화에 대한 해충의 생리적 대응과 온도적응을 이해하는데 필요한 기초자료를 제시한다.

• 한국환경복원기술학회지
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• 제22권5호
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• pp.45-56
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• 2019

Urban green areas are generally composed of relatively small and fragmented patches, but it is a critical factor for the quality of an urban environment. They have positive effects such as increasing green connectivity, reducing runoff, and mitigating urban heat. But, there is a lack of urban greening plans that consider the comprehensive effects of green space in real urban areas. To fill this gap in this literature, this study identifies a planning model that determines the optimal locations for maximizing green areas' multiple effects(e.g., heat mitigation and enhancement of connectivity) by using unused lots. This model also considers minimizing costs using meta-heuristic optimization algorithms. As a results, we finds 50 optimal plans that considers two effects within the limited cost in Nowon-gu. The optimal plans show the trade-off effect between connectivity, heat mitigation and cost. They also show the critical unused land lots for urban greening that are commonly selected in various plans. These optimal plans can effectively inform quantitative effectiveness of green space and their trade-off. We expect that our model will contribute to the improvement of green planning processes in reality.

• 환경영향평가
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• 제30권1호
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• pp.24-34
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• 2021

해양과 연안 지역의 과도한 개발과 이용으로 인하여 해양생태계에 발생하는 문제들을 해결하기 위하여 많은 국가에서 해양생태계 관리계획을 수립하여 시행하고 있다. 본 연구에서는 네트워크 분석법을 적용하여 우리나라와 주요 해양 국가들의 해양생태계 관리 방향 및 특성을 분석하였다. 분석 결과 국내외 공통적으로 해양생태계 관리 기반 구축, 국제적 협력 및 파트너십 구축, 기후변화 대응 강화와 관련된 내용을 포함하고 있었으며, strengthen, promote, improve, establish 등의 단어가 많이 사용된 핵심어로 나타났다. 하지만 세부적인 관리계획에서는 다소 차이가 있는 것으로 나타났는데, 국외에서는 특정 종에 대한 관리계획의 제시와 이미 수행 중인 제도적 기반을 개선하는 단계인 반면, 국내의 경우 포괄적인 해양생물 관리 강화 및 해양생태계 관리를 위한 제도적 기반을 구축하는 단계임을 알 수 있었다. 본 연구는 국내·외 해양생태계 관리 방향을 이해하고 향후 국내 지역의 해양생태계 관리계획 수립 시 활용될 수 있을 것으로 기대된다.

• Journal of Ecology and Environment
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• 제46권3호
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• pp.250-258
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• 2022

Background: To assess the carbon sequestration capacity and net ecosystem productivity (NEP) of Quercus glauca forests, we analyzed the net primary productivity (NPP), carbon storage, and carbon emission of soil in a Q. glauca forest on Jeju Island (South Korea) from 2016 to 2018. Results: The average carbon stock in the above- and below-ground plant biomass was 223.7 Mg C ha^-1, while the average amount of organic carbon fixed by photosynthesis was 9.8 Mg C ha^-1 yr^-1, and the average NPP was 9.6 Mg C ha^-1 yr^-1. Stems and branches contributed to the majority of the above- and below-ground standing biomass and NPP. The average heterotrophic carbon emission from the soil was 8.7 Mg C ha^-1 yr^-1, while the average NEP was 1.1 Mg C ha^-1 yr^-1. Although the carbon stock, carbon absorption, and soil respiration values were higher than those reported in other oak forests in the world, the NEP was similar or lower. Conclusions: These results indicator that Q. glauca forests perform the role of a large carbon sink through the CO₂ absorption in the plants in terms of carbon balance. And it is judged to be helpful as data for assessment of carbon storage and flux in the forests and mitigation of elevated CO₂ in the atmosphere.