• Title/Summary/Keyword: Spatial association

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Integrated Design System of Large Spatial Structures (통합시스템을 이용한 대공간 구조물 설계)

  • Lee, Byung-Hae
    • Journal of Korean Association for Spatial Structures
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    • v.1 no.1 s.1
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    • pp.25-33
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    • 2001

  • 산업전반에 걸친 전산화에 부응하여 각 분야별로 독자적 개발이 이루어진 응용 프로그램간의 데이터 교환 및 통합화의 구현은 점차적으로 현실화 되어가고 있다. 본 내용에서는 이런 추세를 지원하기 위한 데이터 표준화에 대한 내용을 간단히 설명하고 이를 이용한 통합 시스템의 개발개념을 소개한다. 또한 후반부에서는 실용화 단계에 있는 개발 사례를 다루고 있다.

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Spatial Association of Population Concentration in Seoul Metropolitan Area (서울대도시권 인구집중의 공간적 연관성 연구)

  • Park, Jane;Chang, Hoon;Kim, Jy So
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.28 no.3D
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    • pp.391-397
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    • 2008

  • This paper analyzes the spatial patterns of population distribution in Seoul Metropolitan Area in terms of spatial association using spatial statistics and spatial exploratory technique. Our empirical analysis based on global index shows that, in Seoul Metropolitan Area, the population had been distributed with strong positive spatial association over the period of 1980-2005. It implies that the population of each region is affected by the population distribution of adjacent regions. In addition, the analysis using local index was conducted for detecting the local patterns of spatial association, and the result shows that the clusters of population had been moved in the direction of West(Incheon and Bucheon) and South(Anyang and Seongnam) of Seoul where a large scale of lands or towns were developed over the period. These results will be the preliminary data for establishing management and development plans of Seoul Metropolitan Area.

  • https://doi.org/10.12652/Ksce.2008.28.3D.391 인용 PDF

The Spatial Distribution of Quercus mongolica and Its Association with Other Tree Species in Two Quercus mongolica Stands in Mt. Jiri, Korea

  • Jang, Woong-Soon;Park, Pil-Sun;Han, Ah-Reum;Kim, Kyung-Youn;Kim, Myung-Pil;Park, Hak-Ki
    • Journal of Ecology and Environment
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    • v.33 no.1
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    • pp.67-77
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    • 2010

  • Stand structure and spatial associations of the dominant tree species in Quercus mongolica stands were investigated to understand interspecific relationships and the persistent dominance of Q. mongolica. We examined the species composition, DBH (diameter at breast height) distribution, and spatial distribution of trees (${\geq}\;2.5\;cm$ DBH) in two permanent $100\;m\;{\times}\;100\;m$ plots in Q. mongolica-dominant stands on the western part of Mt. Jiri. Ripley's K-function was used to characterize the spatial patterns and associations of dominant tree species. Q. mongolica showed a continuous and reverse-J shaped DBH distribution with clumped spatial distribution in both study sites. Q. mongolica and Abies koreana exhibited a negative association implying potential interspecific competition. The positive spatial association between Q. mongolica and Alnus hirsuta var. sibirica and Fraxinus sieboldiana were affected by site characteristics: limited habitat conditions with a large proportion of rock surface. Our results suggest that interactions among species were complex and ranged from positive to negative. Differences in stand and site characteristics and regeneration mechanisms among the species play an important role in regulating their spatial distribution patterns, while competition between individuals also contributes to spatial patterning of these communities. The high density and the early developmental stage of spatial distribution and structural characteristics of Q. mongolica and the relatively low importance values of other species in the stands imply that Q. mongolica will remain dominant in the study sites in the near future.

  • https://doi.org/10.5141/JEFB.2010.33.1.067 인용 PDF KSCI