• 한국대기환경학회지
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• 제28권2호
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• pp.119-130
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• 2012

Heat island phenomena in Chuncheon (Korea) were investigated using air temperature measured by automatic weather stations and temperature dataloggers located at rural and urban sites. Numerical simulation of the phenomena was performed using Weather Research and Forecasting Urban Canopy Model (WRF-UCM) and results were compared with the observation. The model was initialized with NCEP/FNL data. The horizontal resolution of the fine domain is 0.33 km. The results of observational analyses show that the intensity of heat island was significantly higher during the nighttime than during the daytime. The highest measured temperature difference between rural and urban site is $3.49^{\circ}C$ and average temperature difference varies between 1.4 and $1.9^{\circ}C$. Good agreement was found between the simulated and observed temperatures. However, significantly overestimated wind speed was found at the urban sites. The linear regression analysis between observed and simulated temperature shows high correlation coefficient 0.96 for urban and 0.94 for rural sites while for wind speed, a very low correlation coefficient was found, 0.30 and 0.55 respectively.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• 제2호
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• pp.1-8
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• 2004

The purpose of this study is to carry out the quantitative and qualitative analysis of an urban park in the landscape ecological view and to provide the important basic data in the urban development process. The results of this study are as follows. First, in the case of disposition distance analysis in quantitative plans, very necessary regions of the children park are turned out to be 24 sites, of the neighboring park are turned out to be 30 sites, and walking park are turned out to be 22 sites. Second, in the case of undevelopment neighborhood park analysis, priority orders are Daebong Park, Suseong Park Third, in the case of area, shape, and isolation in qualitative plans, interior area of Bummul park is larger than that of Chimsan park and isolation of Bummul park higher than that of Chimmsan.

• International journal of advanced smart convergence
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• 제13권3호
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• pp.259-266
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• 2024

One of the most time consuming issues in a city development is the identification of suitable areas for urban infrastructures and proper land uses. Suitability analysis is the process and procedures to find the best available land in given area -that is, the ability of a system to select the needs of users in land use. This paper studied the usage of Geographic Information System technique and methods for the selection of the most appropriate sites for public park in the city of Gwangju. GIS was used as a standard technique to find the best available sites for development in urban areas. For this cause, digital elevation model and spatial data were used to produce different thematic layers by using software Idrisi. Criteria for finding the suitable site for park development were decided to evaluate the land and the followings 4 criteria were selected: on land with less than 3 degrees in slope, outside a 200m buffer around lakes, on land currently designated as forests, and 20ha or greater in size. To meet and measure each criterion, distance and context operators were applied to reclassify the importance of certain weight and Boolean images were generated to meet the criteria. These weights and maps has been combined using ArcGIS tools and the final map was prepared showing the most suitable sites. We may assist city planners and government officials in future development of public facilities including parks and related land use plans at urban level and act as to ensure proper land use planning and management of the urban areas.

• 한국환경복원기술학회지
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• 제9권6호
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• pp.13-22
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• 2006

The purpose of this study is to propose rational methods in order to maintain vegetation condition and soil environment based on the analysis of tree growth in relation to the soil environment, which is one of the most significant environmental factors on vegetation condition in urban parks and open spaces. The result of the study can be described as below;The soil on every study site had strong acidity. In particular, study sites around industrial district and central business district showed extreme soil acidity. Therefore, soil management system is needed in urban parks and green spaces around those areas. Among Cambium Electric Resistance classified by locations of urban parks and open spaces, one in the costal area was the lowest. The Cambium Electric Resistance in the industrial area was the highest. Therefore, soil condition and locational environment in the industrial area are highly related to the Cambium Electric Resistance. Among the factors, which affect Cambium Electric Resistance in different locations, inorganic content was found to be the main factor in all of the study sites. Inorganic content was an important factor to the Cambium Electric Resistance in study sites located in industrial and central business districts. In the study sites located in costal area, Soil acidity was found to be other important factors that affect Cambium Electric Resistance. To improve the soil acidity, soil buffering ability should be improved from activating microorganisms in the soil by using lime and organic material, Since it takes a long time to make a change in the soil structure, well planed maintenance system is required by mid-term or long-term plans.

• Journal of Ecology and Environment
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• 제32권3호
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• pp.167-176
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• 2009

Land cover changes associated with urbanization have driven climate change and pollution, which alter properties of ecosystems at local, regional, and continental scales. Thus, the relationships among urban ecological variables such as community composition, structure, health, soil and functioning need to be better understood to restore and improve urban ecosystems. In this study, we discuss urban ecosystem management and research from a futuristic perspective based on analyses of vegetation structure, composition, and successional trends, as well as the chemical properties of soils and the distribution of heat along an urban-rural gradient. Urban thermo-profile analysis using satellite images showed an obvious mitigating effect of vegetation on the Seoul heat island. Community attributes of Quercus mongolica stands reflected the effects of urbanization, such as pronounced increases in disturbance-related and pollution-tolerant species, such as Styrax japonica and Sorbus alnifolia. Retrogressive successional trends were detected in urban sites relative to those in rural sites. Changes in the urban climate and biotic environment have the potential to significantly influence the practice and outcomes of ecological management, restoration and forecasting because of the associated changes in future bio-physical settings. Thus, for management (i.e., creation and restoration) of urban green spaces, forward-thinking perspectives supported by historical information are necessary.

• Membrane and Water Treatment
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• 제10권1호
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• pp.13-17
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• 2019

This study was conducted to analyse the application of pollutant build-up model on various urban landuses and to characterize pollutant build-up on urban areas as a source of stormwater runoff pollution. The monitored data from impervious surfaces in urban areas such as commercial (8 sites), industrial (10 sites), road (8 sites), residential (10 sites), recreational (5 sites) from 2008 to 2016 were used for the analysis of pollutant build-up model. Based on the results, the average runoff coefficients vary from 0.35 to 0.61. In all landuses except recreational landuse, the runoff coefficient is 0.5 or more, which is the highest in the commercial area. Commercial landuse where pollutants occur at the highest EMC in all landuse, and it is considered that NPS management is necessary compared with other landuses. The maximum build-up load for organic matter (BOD) was highest in the commercial area ($4.59g/m^2$), and for particular matter (TSS) in the road area ($5.90g/m^2$) while for nutrient (TN and TP) in the residential area ($0.40g/m^2$, $0.14g/m^2$). The rate constants ranged from 0.1 to 1.3 1/day depending on landuse and pollutant parameters, which means that pollutant accumulation occurs between 1 and 10 days during dry day. It is clear that these build-up curves can generally be classified based on landuse. Antecedent dry day (ADD) is a suitable and reasonable variable for developing pollutant build-up functions. The pollutant build-up curves for different landuse shows that these build-up curves can be generally categorized based on landuse.

• 교육시설 논문지
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• 제19권4호
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• pp.39-48
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• 2012

In recent years, the change of urban function and the decrease in birth rate have given rise to merge, abolition and relocation of the existing schools. This study explores the possibilities for various land utilizations of disused school sites, using the trial case of 'M' elementary school at Bu-pyung Gu in Incheon Metropolitan City. 'M' elementary school has recently happened to need no more land to build another school because of decreasing the number of students. Firstly, it studies the land reuse theories in city, the development methodologies of disused sites and the legalistic and political authority and limits. It analyzes the urban spacial values and roles, such as the educational roles, spacial functions and development values of the land. In addition, this study make a questionnaire of local residents to converge the public opinions on the utilization of disused school site. Finally, it proposes the principal direction for the effective appropriation and an alternative for exploitation of school site targeting disused school site of 'M' elementary school.

• 한국대기환경학회지
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• 제33권6호
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• pp.544-553
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• 2017

There is an overall guideline of the installation of air quality monitoring stations in Korea, but specified steps for the selection of monitoring sites for hazardous air pollutants(HAPs) are not provided. In this study, we proposed a systematic method for the selection of monitoring sites for HAPs using geographic information system (GIS). As a case study, the Seoul metropolitan area (Seoul, Incheon, and Gyeonggi Province) was chosen, and 15 factors including population, vehicle registration, and emission data were compiled for each grid cell ($7km{\times}7km$). The number of factors above the top 30% of individual data for each grid cell was used to select priority monitoring sites for HAPs. In addition, several background sites were added for data comparison and source identification. Three scenarios were suggested: Scenario 1 with 7 sites, Scenario 2 with 17 sites, and Scenario 3 with 30 sites. This proposal is not the final result for an intensive monitoring program, but it is an example of method development for selecting appropriate sampling sites. These results can be applied not only to HAPs monitoring in megacities but also to the national HAPs monitoring network.

• 토지주택연구
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• 제14권2호
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• pp.35-50
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• 2023

정비사업에 있어 공공의 역할이 강조되고 있는 상황에서 객관적으로 정비사업이 필요한 지역을 선제적으로 살펴보는 것은 매우 중요하다. 이 연구의 목적은 공간데이터를 활용하여 재정비가 필요한 지역을 탐색하고, 재정비 대상지 유형화 및 특성을 분석하는 것이다. 이를 달성하기 위해 공간데이터를 사용하여 커널밀도함수와 K-means 군집분석을 수행하였고, 재정비 대상지역 발굴 방법을 모색하였다. 주요연구결과 및 시사점을 요약하면 다음과 같다. 첫째, 개발 용적비와 노후도 지표를 기준으로 서울시 전역에 걸쳐 587개 재정비 대상지를 구획하였으며, 선도사업·신속통합기획 후보지 비교결과 절반 정도 일치성을 확인하였다. 둘째, 재정비 대상지는 공공에서 지정한 선도사업 후보지에 비하여 상대적으로 주거환경이 열악하였다. 셋째, 재정비 대상지는 통계적으로 뚜렷하게 유형화되지 않았으며, 사업요건별 유형화의 타당성을 확인하였다.

• 국제학술발표논문집
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• The 10th International Conference on Construction Engineering and Project Management
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• pp.839-845
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• 2024

Construction projects in urban areas often disrupt pedestrian paths and expose pedestrians to risks by forcing them to detour onto roadways. Despite rising pedestrian fatalities and injuries near construction sites, most research predominantly focuses on the safety of on-site workers, with limited studies addressing pedestrian safety. This study aims to fill this gap by identifying environmental factors that cause discomfort to pedestrians, potentially leading to hazardous impacts. A total of 252 photos of streetscape areas near construction sites, including seven environmental factors (i.e., traffic cones, fences, barrier walls, materials, heavy equipment, roads, and sidewalks), were collected and evaluated by 41 participants using a 5-point Likert scale. The survey findings indicate that barrier walls enhance pedestrians' perception of safety. Conversely, it is observed that traffic cones, materials, and heavy equipment have adverse effects on pedestrian safety. These results underscore the need for enhanced safety measures targeting these high-risk factors to create pedestrian-friendly construction sites. This study contributes to developing more proactive pedestrian safety management strategies and ultimately reduces pedestrian injuries.