• 제목/요약/키워드: 5 urban communities

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Assessing Spatial Disparities and Spatial-Temporal Dynamic of Urban Green Spaces: a Case Study of City of Chicago

  • Yang, Byungyun
    • 한국측량학회지
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    • 제38권5호
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    • pp.487-496
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    • 2020
  • This study introduces how GISs (Geographic Information Systems) are used to assess spatial disparities in urban green spaces in the Chicago. Green spaces provide us with a variety of benefits, namely environmental, economic, and physical benefits. This study seeks to explore socioeconomic relationships between green spaces and their surrounding communities and to evaluate spatial disparities from a variety of perspectives, such as health-related, socioeconomic, and physical environment factors. To achieve this goal, this study used spatial statistics, such as optimized hotspot analysis, network analysis, and space-time cluster analysis, which enable conclusions to be drawn from the geographic data. In particular, 12 variables within the three factors are used to assess spatial disparities in the benefits of the use of green spaces. Finally, the variables are standardized to rank the community areas and identify where the most vulnerable community areas or parks are. To evaluate the benefits given to the community areas, this study used the z- and composite scores, which are compared in the three different combinations. After identifying the most vulnerable community area, crime data is used to spatially understand when and where crimes occur near the parks selected. This work contributes to the work of urban planners who need to spatially evaluate community areas in considering the benefits of the uses of green spaces.

Biochemical Indices of Vitamin E, Ascorbic Acid and Iron Status : Relation to Diet, Supplement Use and Other Lifestyle Variables in Urban and Rural (Amish) Populations

  • Ro, Hee-Kyung;Jean T. Snook;Elizabeth Prater
    • Preventive Nutrition and Food Science
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    • 제5권4호
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    • pp.205-212
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    • 2000
  • The relation of food and supplemental intake of iron, vitamin E and ascorbic acid and other lifestyle variables to packed cell volume (PCV) and serum vitamin levels was studied in urban and rural (71% Amish) communities. Subjects were interviewed (24-h dietary recalls) on three occasions over 18-months, and blood samples were taken (maximum observations = 442). Mean PCV was lower in rural males (43.3) than in urban males (45.4) despite higher man food iron intake (18.7 and 14.4 mg/day, respectively). Mean meal iron availability was higher at lunch and lower at breakfast and dinner for rural than for urban subjects. Smoking was the number one variable in males and females explaining variance in PCV. Supplemental vitamin E and ascorbate intakes explained the most variance in serum vitamin E and ascorbate levels, respectively. Serum vitamin E was also associated with supplemental ascorbate intake (r=0.29). Serum ascorbate was also associated with food ascorbate intake (r=0.28) and body weight (r=-0.24).

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도심하천과 자연하천의 저서성 대형무척추동물 군집 구조 (Community Structure of Benthic Macroinvertebrate in the Urban and Nature Stream)

  • 신석민;최일기;서을원;이종은
    • 한국환경과학회지
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    • 제22권12호
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    • pp.1551-1559
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    • 2013
  • This study was conducted to compare benthic macroinvertebrate communities of urban stream and nature stream in Daegu-si, Gyeongju-si, Gyeongsan-si, Andong-si, and Cheongsong-gun. The survey was carried out with 12 points in total six points for urban stream, six points for nature stream from Sept. 2011 to July 2012. In the urban stream were 33 species belonged to 24 families, 11 orders, 7 classes and 4 phyla while in the nature stream were 73 species belonged to 38 families, 12 orders, 5 classes and 4 phyla. In general, species diversity indices and species richness indices appeared low in urban stream but dominance indices was high. Functional feeding groups and Habitat Oriented Groups appeared comparatively simple in urban stream rather than nature stream. As a result of analysis of community stability, species included to area I and area III equally appeared in nature stream while species included to area I mostly appeared in urban stream. An analysis of the correlation between the population density and the number of species, the population number and biological indicators such as DI, H', RI, and ESB revealed that there was a significant correlativity with the diversity index and a very high correlativity with the number of species, abundance index and the ESB. On the other hand, the population number and the dominance index did not reveal any correlativity. For indicator species, Hydroptila KUa, Physa acuta appeared in urban stream while Paraleptophlebia chocolata, Epeorus pellucidus appeared in nature stream.

오염농도의 공간적 분포를 고려한 도시림의 대기정화기능 계량화 (A Quantitative Analysis of Air Purification Effectiveness on Urban Forest Considering the Spatial Distribution of Pollutant Concentration)

  • 최철현;이우성;정성관
    • 한국지리정보학회지
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    • 제15권2호
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    • pp.71-85
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    • 2012
  • 본 연구는 도시의 대기환경과 관련하여 도시림의 정화 기능을 평가해보고 개선방안에 대해 고찰해 보는 것이 목적이다. 대기오염은 도시화가 특히 심화되어 있는 지역일수록 심각하기 때문에 우리나라의 대도시 중 하나인 대구광역시를 대상으로 도시림의 대기정화기능을 추정하였다. 오염물질의 흡수량을 산정함에 있어 기존에는 고려되지 못했던 오염농도의 공간적 차이를 적용하였으며, 크리깅을 통해 대기확산모델링 자료의 해상도를 향상시켰다. 도시림의 유형 및 분포를 파악해 본 결과, 대상지역 도시림 내의 식생군락은 총 26개 유형이었으며, 소나무군락, 소나무-신갈군락, 소나무-상수리군락 등 다양한 수종이 분포하고 있었다. 도시림의 대기정화기능을 알아보고자 $CO_2$의 흡수량을 파악해 본 결과, 연간 흡수량은 총 108,155t/yr인 것으로 분석되었다. 도시림의 대기오염물질 흡수량의 경우 $SO_2$ 흡수량은 총 183.5t/yr이었으며, $NO_2$ 흡수량은 총 410.2t/yr인 것으로 나타났다. 본 연구를 통해 오염농도에 대한 공간적 분포를 고려하지 않아 확인이 불가능했던 농도에 따른 흡수량의 차이를 확인해 볼 수 있었다.

참여형 도시 소생물권 설계 (Biotop Design for an Urban Area Based on Citizen Input)

  • 이관규;김철민;한선아
    • KIEAE Journal
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    • 제5권4호
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    • pp.59-64
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    • 2005
  • This work was designed for the Green Fund Aid 2004 of Korea Forest Service. It won the prize and has been constructed. We can have an opportunity to play a leading role in improving partnership with participation of local communities, promoting environmental education, and enhancing the environmental quality by constructing biotops in urban areas where energy flow in the ecosystem is not balanced. This design includes 'citizen participation process' and 'local community partnership' that is expected to promote local community participation in the process of design. This work suggests that biotope construction with citizen involvement and community partnership plays an important role not only in design items but also in the revitalization of local community. This sort of design process could not be fully achieved without cooperation with stakeholders - environmental specialists, local authorities, relevant societies, schools, teachers, parents of students.

도시림의 생태학적 진단과 생태적 관리시스템 개발 : 부산시 황령산을 중심으로 (Ecological diagnosis and Development of Ecological Management System of Urban Forest : On Mt. Hwangryung in Pusan, Korea)

  • 조현제;이창석
    • The Korean Journal of Ecology
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    • 제21권6호
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    • pp.779-789
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    • 1998
  • The forest vegetation established on Mt. Hwangryung located in Pusan, southern Korea was analyzed through phytosociological procedure. Vegetation of the study area was categorized into 14 communities, 16 groups, and 13 subgroups. Vegetation units obtained from such an analysis were shown in a detailed vegetation map (scale 1:5,000). Ecological characteristics of each vegetation unit were discussed on the basis of the principle of restoration ecology. From those results, it was confirmed that some introduced vegetation under excessive artificial interference was in unstable state and then ecological restoration was needed. On the other hand, ecological information and management systems to maintain the urban forest as ecologically healthy state were developed using GIS.

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중심지이론을 이용한 의사의 지역적 분포에 관한 실증분석 (An Empirical Analysis on Geographic Distribution of Physicians using the Central Place Theory)

  • 김춘배;강명근;고상백;김한중;유승흠;손명세
    • 보건행정학회지
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    • 제6권2호
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    • pp.58-90
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    • 1996
  • This study provides an empirical analysis of location competition for demand maximization by central place theory among physicians in nonmetropolitan areas of Korea. The results show that the primary care physicians distribute themselves evenly from urban communities to rural communities. The subspecialists, however, cluster together in major cities rather than decentralize themselves in rural counties. This study establishes the three statistical models : Primary care physicians, subspecialist physicians, and total physicians. Two models of primary care physicians and total physicians have a strong significance in multiple regression analysis (p=-.0001). The primary care model explains approximately 45% of the variation and the total physicians model explains approximately 70% of the variation in physician/1,000 population ratios across national counties. The subspecialist physicians model analysze the tobit regreassion because of the left consored and truncated values(57 cases = 0). In all three models, analysis of the coefficiencts for physician centralization degrees in the 0- to 5- and 5- to 10-km rings around the core county reveals each a positive and negative association betwee these degrees and the physician/1,000 population ratios in the core county. Also, the results provide moderate evidence that the relationship between clinic physicians and community hospitals is competitive, and the relationship between clinic physicians and pharmaceutists is synergistic. This suggests that public policy makers and local self-governing bodies must take an active role to ensure procider availability and the regional health planning in all nonmetropolitan areas of Korea.

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텃밭활동의 학교폭력 예방에 대한 중학생과 지역사회 주체의 인식차이 (The Difference between Middle School Students' and Community Concerns' Perception on Gardening Program to Protect School Bullying)

  • 김경미;정순진;이상미;정선희
    • 농촌지도와개발
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    • 제23권3호
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    • pp.257-270
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    • 2016
  • This study was to investigate the perception and the usability of gardening program in a community for protection of school bullying at a middle school. The data collected from 640persons of middle school students, their parents, teachers, residents, NPO staffs for youth, active persons in urban agriculture and farming at 3communities during 2014.10.21.~2014.11.5. The degree on necessity of gardening program to protect school bullying were statistical significant different by age, garden experience, understanding and exchanging with youth and neighbors, keeping relationship or communication between school and family or residents. Most of parents, teachers prefer to increase the family counseling program by NPOs for protection of school bullying. On the contrary, concerns in urban agriculture and farming strengthened to cheer up gardening program for youth. In this study also, it was agreed that gardening program is useful for protection of school bullying and for stability of emotional safety for youth involving in middle school students. From these results, gardening program will be more contribution to communications and exchanges between school, student's family and their community persons as like neighbors, NPO staffs, concerns in urban agriculture and farming.

Mortality Characteristics and Prediction of Female Breast Cancer in China from 1991 to 2011

  • Shi, Xiao-Jun;Au, William W.;Wu, Ku-Sheng;Chen, Lin-Xiang;Lin, Kun
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권6호
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    • pp.2785-2791
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    • 2014
  • Aims: To analyze time-dependent changes in female breast cancer (BC) mortality in China, forecast the trend in the ensuing 5 years, and provide recommendations for prevention and management. Materials and Methods: Mortality data of breast cancer in China from 1991 to 2011 was used to describe characteristics and distribution, such as the changes of the standardized mortality rate, urban-rural differences and age differences. Trend-surface analysis was used to study the geographical distribution of mortality. In addition, curve estimation, time series modeling, Gray modeling (GM) and joinpoint regression were performed to estimate and predict future trends. Results: In China, the mortality rate of breast cancer has increased yearly since 1991. In addition, our data predicted that the trend will continue to increase in the ensuing 5 years. Rates in urban areas are higher than those in rural areas. Over the past decade, all peak ages for death by breast cancer have been delayed, with the first death peak occurring at 55 to 65 years of age in urban and rural areas. Geographical analysis indicated that mortality rates increased from Southwest to Northeast and from West to East. Conclusions: The standardized mortality rate of breast cancer in China is rising and the upward trend is predicted to continue for the next 5 years. Since this can cause an enormous health impact in China, much better prevention and management of breast cancer is needed. Consequently, disease control centers in China should place more focus on the northeastern, eastern and southeastern parts of China for breast cancer prevention and management, and the key population should be among women between ages 55 to 65, especially those in urban communities.

대구광역시 가로수 하단부 식생의 평가 (Vegetation Assessment of the Street Tree Sites in the Daegu Metropolis)

  • 김정섭;조광진;김종원
    • 한국조경학회지
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    • 제33권1호
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    • pp.71-80
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    • 2005
  • In order to search for ecologically indicative characteristics on the street tree plots in Daegu area, plant communities and their floras were investigated. A total of 105 plots were collected and numerically analyzed by PCoA(Principal Coordinates Analysis). These plots were classified into 4 types containing 139 species, 97 genera, 42 families(including 37 exotic species): urban-dry type, urban-wet type, rural-dry type, rural-wet type. Habitat connectivity to the surrounding vegetation cover, extent and frequency of human impacts, and soil moisture recognizably were the main factors to allow the plots differentiation. Indicative species composition to these four types was generated as Eleusine indica-Eragrostis multicaulis-Oxalis corniculata to the urban-wet, Digitaria ciliaris-Eleusine indica-Eragrostis multicaulis to the urban-dry, Setaria viri-dis-Artemisia-Lactuca indica var. laciniata to the rural-wet, and Setaria viridis-Digitaria ciliaris-Erigeron canadensis to the rural-dry, respectively. Mean species number per plot for rural type was 2.5 times higher than for urban types. Street tree species representative to the rural-wet type is Zelkova serrata, which is a key species of potential natural vegetation in the alluvial land of Daegu area. Street tree plots were characterized by Eleusine indica showing the highest r-NCD value and also C4-assimilation grass plants. Views on the efficacy of the rural-wet type and the reinforcement of vegetation connectivity and soil moisture in rehabilitating street tree plots, are discussed.