• Title/Summary/Keyword: URBAN ENVIRONMENT

Search Result 4,778, Processing Time 0.027 seconds

Change of Thermal Environment with Urban Expansion (도시 확장에 따른 온열환경의 변화)

  • Kim, Sang-Jin
    • Journal of the Korean Solar Energy Society
    • /
    • v.27 no.2
    • /
    • pp.95-101
    • /
    • 2007
  • The surface changes due to urban expansion and the increase of artificial heat releases have brought significant climate changes such as heat island phenomenon in urban area. Furthermore, these changes also have brought serious problems such as air temperature increase, wind changes, and air pollution in urban area. Comprehensive analytical technologies considering various effects are required to analyse complicated mechanism of climate changes, and review the efficient measures. In this research, the effect of the urban expansion in Tokyo and Bangkok area on urban environment will be discussed. By using CFD, urban development and the mechanism of global warming and wind change are studied in those two cities. As a result of numerical research, the surface changes of city could bring the environmental changes in urban area.

Development of an urban forest management system based on information of topography, soil and forest type (지형, 토양 및 임상정보에 기초한 도시림 관리시스템 개발)

  • Lee, Woo-Kyun;Son, Yo-Whan;Song, Chul-Chul;Chung, Kee-Hyun;Kim, Yoon-Kyoung;Ryu, Soung-Ryoul;Kim, Hyun-Sup
    • Journal of Environmental Impact Assessment
    • /
    • v.8 no.3
    • /
    • pp.61-76
    • /
    • 1999
  • For the effective management of urban forest, a variety of informations on urban forest needs to be accurately measured and effectively used in decision-making processes. This study aims at developing an urban forest management system with reference to GIS and making it possible to effectively manage urban forests. A detailed forest type map were constructed with the help of aerial photograph and terrestrial inventory. A geographical map in terms of slope, aspect and altitude were also prepared by Digital Elevation Model(DEM). A soil type map containing chemical characteristics were also made through soil analysis. These thematic maps which contain informations on forest type, geography and soil were digitalized with reference to GIS, and an urban forest management system of user interface were developed. With the help of this urban forest management system, various spatial and attribute informations which need for urban forest management could be easily used in decision-making processes in relation to urban forest.

  • PDF

Feasibility of Alternative Physical Parameters by Subjective Evaluation for Urban Environmental Sounds (도시 환경음의 쾌적성 평가를 통한 새로운 지수 적용가능성 분석)

  • Park, Hyeon-Ku;Jang, Gil-Soo
    • KIEAE Journal
    • /
    • v.8 no.1
    • /
    • pp.31-36
    • /
    • 2008
  • For the comfortable housing life, comfortable and pleasant urban environment should be created for the people living in house and in city. There are lots of environmental conditions in city affecting house and life. Also most of all the noise pollution have been become major factor that makes people's life uncomfortable. Recently soundscape researches have been performed to create comfortable urban environment and various studies on the evaluation of urban environmental sounds are now undergoing. This study aimed to analyse the subjective characteristics through the subjective evaluation to the sounds measured with physical parameters and eventually to find out alternative evaluation method for urban environmental sounds. Adjectives applied to previous studies were used for the subjective evaluation and sound sources recorded in specific places were presented with picture at the same time. As a result, new physical parameters such as Lmax, Unbiased Annoyance, G, N and EmT have a feasibility to evaluation of urban environment sounds in terms of acoustic comfort.

A Study on the Research Model for Healthy Urban and Architectural Environment (건강한 건축·도시환경을 위한 연구모형 구축에 관한 연구)

  • Choi, Kwangseok
    • Journal of The Korea Institute of Healthcare Architecture
    • /
    • v.19 no.1
    • /
    • pp.35-46
    • /
    • 2013
  • Purpose: Health is one of the most important interests in current and future human society. Various efforts, which to maintain and promote their good health conditions, continue to be tried in future urban and architectural environment. The purpose of this study is to establish an integrated framework of research approaches for healthy urban and architectural environment that continuously promotes health according to people's entire life course. Methods: This was done by literature reviews, which is related to interdisciplinary researches for the determinants of health and healthy environment. Results: As a result of this study, an integrated research model, as a methodology, was proposed. This explains the concept of integrated research approaches for urban and architectural environment in the respect of people's health. Integrated health concept includes not only the area of health care environment to have recovery and treatment but also the daily living environment for people who have potential of being ill, and finally the city environment for entire people as health supporting elements including safety and primary prevention. Implications: Under the basis of this model, according to the life course, various researches on sustainable healthy urban and architectural environment should be followed from now on. The model should also be continuously complemented and developed into a standard of healthy environment.

A Study on Urban Environmental Climate Mapping Method for Sustainable Urban Planning in Daegu (대구지역의 환경친화적 도시계획을 위한 도시환경기후지도 작성에 관한 연구)

  • Park, Myung-Hee;Jung, Woo-Sik;Kim, Hae-Dong
    • Journal of Environmental Science International
    • /
    • v.20 no.4
    • /
    • pp.465-482
    • /
    • 2011
  • To preserve atmospheric environment of urban areas, it needs to create urban space considering air pollution sources and natural and geographical properties such as wind circulation. According to this study could examine climate and environmental characteristics of Daegu and accordingly suggest a climate map in urban environment and an "advice map" in urban planning. The urban area(area paved with asphalt and concrete) of Daegu has increased by more than five times since 1960. In addition, the analysis of thermal environment through satellite data shows that the surface temperature between a place paved with artificial structures and a farmland shows $10{\sim}20^{\circ}C$ difference during the daytime in the summer. Regarding the parks inhibiting the heat island of a city have the small area of trees, and the road paved with concrete is wide so that they hardly serve as the source of heat absorption. As Apsan is located to the south of Daegu and Palgonsan to the north and Daegu has east high west low type, mountain wind from mountains in the south and north passes a city and delivers heat and air pollutions at night. In the west of Daegue, there is the poorest environment and industrial facilities and environmental basic facilities are mostly located, so large residential complexes that are being built around the industrial facilities as if they set up a folding screen and therefore the poor environment is increasingly worse.

A Study on the Convergence of Renovation Measures for Urban Ecological Park Considering the Thermal Environment in Summer - With a Case of Gildong Ecological Park - (여름철 열환경을 고려한 도시생태공원 리노베이션 방안 융합 연구 - 길동생태공원을 사례로 -)

  • Kwon, Ki Uk
    • Korea Science and Art Forum
    • /
    • v.36
    • /
    • pp.11-22
    • /
    • 2018
  • This study recent changes in urban thermal environment caused by climate change generate diverse problems such as urban heat island effects, heat wave, and drought. Under this condition, with the increased perception and expectation of the quality of life, the urban citizens' desire for outdoor activities is increasing. This study conducted the thermal environment analysis focusing on the urban ecological park used by many urban citizens, and also suggested the renovation measures for urban ecological park considering the thermal environment. As the research site, the ecologically-favorable Gildong Ecological Pak with diverse space composition was selected. The measuring items were measured and analyzed by dividing them into thermal environment index and thermal comfort index. In the results of analysis in each type of park space, the forest zone showed the most favorable result. Based on such results, total three kinds of renovation measures for urban ecological park considering the thermal environment were suggested. Through this, the urban ecology park renovation plans were presented in three ways. The results of this study are meaningful in that it can be used as a base material for creating an ecological park considering the thermal environment.

The Analysis of Korean Urban Symbols -Urban Songs, Urban Birds, Urban Trees, and Urban Flowers- (한국 도시 상징의 분석 -시가, 시조, 시목, 시화를 중심으로-)

  • Hwang, Hong-Seop
    • Journal of the Korean association of regional geographers
    • /
    • v.3 no.2
    • /
    • pp.227-253
    • /
    • 1997
  • Twenty-first century will be in the era of culture and art as postmodernims progresses, therefore, geography which is is traditionally concerned with regional study needs to deeply study the culture of region. Regional symbols are clue to identify regional culture which is environments of symbolic space. Especially the study of urban culture come to the needs of times with occurring global city, urban symbols make clear urban culture and urban identity. The aim of this paper is to analyze urban symbols, that is urban songs, urban birds, urban trees, urban flowers to study urban culture in korean cities, urban symbols make clear urban spatial environment which is natural and human, and then, urban symbols make clear urban identity. The analytical results of lyrics of urban songs in the 76 cities of korea include names of mountain, river, sea and place, the names of mountain and river make clear urban identies which is natural and human characteristics, it is environment of symbolic space which brings unity, one body. Especially it is environment of symbolic space which comprise fung-soo(風水) aspects, place names well represent symbolic space. The analytical results of symbolic things, that is urban birds, urban trees, urban flowers in the 78 cities of korea indicate they are gain and gain established, they are also our environments of symbolic space which is curtual settlings of our life, but they are imported not native species but foreign species which have not environment of symbolic space. The results of this paper implicate urban symols should review. because urban symbols fit to our natural and human environments of symbolic space.

  • PDF

A Study of the Small Urban Space Design Method in Consideration of Ecological Environment (생태적 환경을 고려한 소도시공간설계 방법에 관한 연구)

  • Lee, Gwangyoung;Chong, Geonchai
    • Journal of the Korean Institute of Rural Architecture
    • /
    • v.2 no.2
    • /
    • pp.75-88
    • /
    • 2000
  • This study is based on the Ecological Design Theories related with the Urban space planning. The purpose of this study is to propose the Urban Space Design Method in consideration of Ecological Environment. To achieve this purpose, Normative Theory Study which means Logical Analysis of Ecological Theories in the new field of Ecological Urban Design, is done in accordance with the object of this study. This results derived of this study are as follows: 1. Six(6)-Ecological Urban Planning Elements related with the purpose of this study, are clarified these are Land-use planning, Transformation planning, Plants and Living-thing Ecological System planning, A Culture planning related with water, Energy and resource planning, and Urban-amenity planning. 2. Urban Space Design Method in consideration of Ecological Environment is porposed by means of the Normative theroy study analysis and contents analysis related with Ecological Urban planning which contain Ecological Planning Elements.

  • PDF

Study of a Three-Dimensional and Multi-Functional Urban High-Rise Complex in the High-Density Environment: Design Practice of Yiwu World Trade Center

  • Li, Linxue;Hou, Miaomiao;Zhang, Qi
    • International Journal of High-Rise Buildings
    • /
    • v.8 no.1
    • /
    • pp.37-47
    • /
    • 2019
  • Facing the challenges of urban form and space quality in a high-density environment, the paper puts forward the development trend of three-dimensional and multi-functional design for an urban high-rise complex, and analyzes the design methods of establishing an urban landmark, including multi-functional composition, three-dimensional space integration, three-dimensional traffic organization and energy flow programming. Meanwhile, combined with the specific design case of Yiwu World Trade Center, the practical experience of designing a high-rise complex in China's medium-sized cities is analyzed.

Application of the Latest Land Use Data for Numerical Simulation of Urban Thermal Environment in the Daegu (최신토지피복자료를 이용한 대구시의 열환경 수치모의)

  • Lee, Hyun-Ju;Lee, Kwi-Ok;Won, Gyeong-Mee;Lee, Hwa-Woon
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.25 no.3
    • /
    • pp.196-210
    • /
    • 2009
  • The land surface precesses is very important to predict urban meteorological conditions. Thus, the latest land use data set to reflect the rapid progress in urbanization was applied to simulate urban thermal environment in Daegu. Because use of the U.S geological Survey (USGS) 25-category data, currently in the fifth-generation Pennsylvania State University-National Center for Atmospheric Research Mesoscale Model (MM5), does not accurately described the heterogeneity of urban surface, we replaced the land use data in USGS with the latest land-use data of the Korea Ministry of Environment over Daegu. The single urban category in existing 24-category U.S. Geological survey land cover classification used in MM5 was divided into 5 classes to account for heterogeneity of urban land cover. The new land cover classification (MC-LULC) improved the capability of MM5 to simulate the daytime part of the diurnal temperature cycle in the urban area. The 'MC-LULC' simulation produced the observed temperature field reasonably well, including spatial characteristics. The warm cores in western Daegu is characterized by an industrial area.