• Title/Summary/Keyword: landscape index

검색결과 601건 처리시간 0.03초

GIS 및 RS기법을 활용한 산사태 취약성 평가 (Evaluation of Landslide Susceptibility Using GIS and RS)

  • 김경태;정성관;박경훈;오정학
    • 한국지리정보학회지
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    • 제8권1호
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    • pp.75-87
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    • 2005
  • 본 연구는 금호강 유역을 대상으로 GIS와 원격탐사기법을 활용하여 산사태 취약성의 예측과 지도화를 수행하고자 한다. 산사태 영향인자인 사면경사, 사면방향, 지질, 토지이용도, 식생지수(NDVI)의 공간데이터베이스는 $30m{\times}30m$ 해상도로 구축하였다. 산사태 취약성은 중첩분석과 합산 평가 매트릭스 방법으로 예측하였고, 6개 범주(안정, 매우 낮음, 낮음, 중간, 높음, 매우 높음)로 구분한 산사태 취약성 지도를 제작하였다. 분석결과에 따르면, 산사태 취약성이 '매우높은' 지역은 전체 대상지의 약 0.3% 정도를 차지하며 이들 지역은 주로 높은 경사도와 낮은 식생지수를 가지는 산림지역에 분포하는 것으로 나타났다.

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경주국립공원 토함산지구 내 만호봉 일대의 관속식물상 (Vascular Plants of Mt. Manhobong in Mt. Tohamsan District, Gyeongju National Park)

  • 유주한;권순영
    • 한국자원식물학회지
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    • 제31권5호
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    • pp.575-589
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    • 2018
  • 본 연구는 토함산지구 내 만호봉 일대에 분포하는 관속식물 상을 조사 및 분석함으로서 경주국립공원의 생태계를 관리 및 보전하기 위한 기초 자료 제공에 목적이 있다. 2012년 5월부터 2017년 8월까지 관속식물상을 조사한 결과는 다음과 같다. 증거표본을 기초로 관속식물상 목록을 작성한 결과, 91과 292속 397종 4아종 48변종 8품종 등 총 457분류군으로 나타났다. 멸종위기야생생물은 2분류군, 희귀식물은 11분류군, 한국특산식물은 14분류군이 조사되었다. 식물구계학적 특정식물은 총 39분류군으로, V등급은 3분류군, IV등급은 5분류군, III등급은 2분류군, II등급은 11분류군, I등급은 18분류군이다. 귀화식물은 33분류군이고 귀화율(NI)과 도시화지수(UI)는 각7.2%, 10.3%이다. 생태계교란식물은 돼지풀과 미국쑥부쟁이 2분류군이다.

GIS를 활용한 서울시 도시근교공원의 접근성 지표에 관한 연구 (GIS-oriented Measurement Indicces of Accessibility of the Neighborhood Park in Seoul)

  • 허미선;진양조
    • 한국조경학회지
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    • 제24권3호
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    • pp.42-56
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    • 1996
  • The citizens seek to maximize convenience, pleasantness and safety when they use urban facilities. However, existing practices of urban neighborhood parks have applied not qualitative standards such as adequacy, efficiency, accessibility, equity, or socioeconomic issues but very limited quantitative standards such as area per person. Therefore it is not rare that citizens have lost their accessibility to near-by neighborhood parks. And park regulations based on the distance of lien are supposed to be uniformally accomplished regardless of the consideration about users or geographical special situations. Futhermore, it has been found that some urban neighborhood parks don't reach to the standards given by the regulations. This study tries to accomplished several purposes. The first purpose is to extract the boundary of real user-accessible zones derived from the city survey. Comparing with boundary of real user-accessible zones, the second one is to propose the most efficient measurement indices among many accessibility measurement index. Based upon the above arguments, the last one is to review the propriety of the access distances(e.g., semidiameter) of an urban neighborhood park in a law. The measurement indices of accessibility examined in this study are walking distance, walking time and walking difficulty. The comparison of visual discrimination, the comparison of area and the comparison of differences of maximum distance showed similar results. Each index can also be compared in the size of area and differences of maximum distance. Walking difficulty with the turning showed the best measurement values among the measurement indices. This indicates that walking difficulty with crossing and/or turning may be another important indices in measuring accessibility, while other existing studues have mainly dealt with walking time and distance as accessibility indices. The results of this study also supported that the existing regulations related to park allocation(e.g., access diameter) are close to the findings of this study.

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금정산성 등산로 주변 식생의 생태적 특성 평가 (Assessment on Ecological Characteristics of Vegetation in the Trail of Area Adjacent to GeumJeong Mountain Fortress)

  • 남정칠;서정범;조국희;김석규
    • 환경영향평가
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    • 제19권6호
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    • pp.527-537
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    • 2010
  • This study are Geumjung mountain fortress of the Busan Metropolitan City in the north gate of the East gate around the trail to identify the vegetation structure importance value, dominance, species diversity, similarity index analysis. Results of the study, plot on the western slopes elevation 423-636m, slopes of $15{\sim}20^{\circ}$ slope areas, Pinus densiflora, Pinus thunbergii, Quercus acutissima, Pinus thunbergii, Pinus rigida, Carpinus coreana, Quercus mongolica are fulfilling a community. Trees layer a height 8~12m, coverage 40~70%, sub-trees layer the height 3~7m, coverage 10~80%, shrubs layer the height 0.8~1.5m, coverage 20-30%, herb layer the height 0.1~0.5m, coverage 5-10% were in the range of plot in the east slope elevation 452-647m, slopes in the slope of $5-30^{\circ}$ and Pinus rigida, Pinus thunbergii, Pinus densiflora, Quercus mongolica, Quercus dentata, Carpinus coreana is fulfilling a community. The trees layer height 8~13m, coverage 0~70%, sub-trees layer the height 2~6m, coverage 0~80%, shrubs layer the height 0.8~1.5m, coverage 20-40%, herb layer the height 0.1-0.5m, coverage 5-40% were in the range. The survey showed to be in relatively good vegetation, but in some areas of Pinus rigida, Quercus acutissima, as was predicted in succession, the shrub layer in the plot of some dominated vine plants and vegetation management will be needed for this purpose respectively.

낙동정맥 성시골지역의 식생구조 분석 (Analyzing Vegetation Structure of Seongsi Valley in the Nakdong-Jeongmaek)

  • 이수동;김동욱;최송현
    • 한국환경생태학회지
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    • 제25권3호
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    • pp.378-388
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    • 2011
  • 낙동정맥 구간 중 성시골 지역의 식생구조를 파악하기 위하여 총 9km 구간을 대상으로 $10m{\times}10m$($100m^2$) 방형구34개소를 설치하여 주요 환경인자 및 식생구조를 조사하였다. 낙동정맥 성시골 지역의 식물군락은 소나무군락, 박달나무군락, 굴참나무군락, 졸참나무군락, 신갈나무군락, 일본잎갈나무군락의 6개 유형으로 구분되었다. 단위면적($100m^2$)당 군락별 평균 출현 종수는 8.5~10.5종이었고, 출현 개체수는 평균 27.5~175.6개체이었다. 종다양도지수는0.6061~0.8736로 나타났으며 소나무군락이 가장 낮았고 박달나무군락이 가장 높았다. 유사도지수는 10.03~39.72로비교적 낮았으며 소나무군락 및 신갈나무군락과 일본잎갈나무군락의 유사도가 가장 낮았고 굴참나무군락과 신갈나무군락의 유사도가 가장 높았다.

미개발 근린공원의 개발 우선순위 결정 -대구광역시를 대상으로- (A Study on Development Priority of Undeveloped Urban Neighborhood Park in Case of Daegu Metropolitan City)

  • 이기철;김경완
    • 한국조경학회지
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    • 제29권1호
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    • pp.80-91
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    • 2001
  • The purpose of this research is to provide a basic knowledge to open up for undeveloped park in process of the park policy establishment by setting up the priority of park development and valuation factor, valuation index as well as building a basic material to undeveloped neighborhood park in Daegu Metropolitan City. Thirteen urban neighborhood parks(1,841,663$m^2$) in the Daegu Metropolitan City were selected for this study. Analyzing and reviewing the previous research and literature review were conducted, and the evaluation index and analysis criteria were constructed to decide the development priority of parks. The results of this research are as follows; 1) Following to the result of the expert questionnaire test in order to estimate weight of valuation factors. It had a high score in available population, and estimated amount of the gross compensation, unpurchased land rate. On the other hand park rate of autonomous district, altitude, rate of population increase in autonomous district and a low score. 2) Generally, most f the plain type parks had a high score in the Sea level, land using pattern, an estimated amount of the gross compensation, but hill type parks had a high score the rate of green covered, park area for one person of administration building. 3) Daebong, Soosung, Dosan, 2.28 youth, Kyungnam parks were selected high priority. Soochang, Donsibong, Janggi, Dongin parks were selected middle priority. Bokhyun, Galsan, Manchon, Gusoosan parks, which were selected low priority. This research for undeveloped park is a basic research step to open up. Three many difficult things in shortage of the basic material for building valuation factor and measuring of the method measurement. The application of weight which make a decision importance among the valuation factor should have ore reasonable study and more scientific research from now because there still remains a lot of shortage of positive materials in there.

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국토계획과 환경계획 통합관리 지표의 적용을 통한 통합관리 현황 평가 (Assessment of National and Regional Plans Using Integrated Management Index of Korea National Planning and Environmental Planning for Present Status Evaluation)

  • 허한결;이동근;성현찬;허민주;박진한
    • 한국환경복원기술학회지
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    • 제22권4호
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    • pp.81-91
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    • 2019
  • Integrated management of Korea national and environmental planing for sustainable development is suggested, and basic research is needed. In this study, national and regional plans were assessed using 'integrated management index of Korea national planning and environmental planning' to grasp the current status of integrated management on Korea national planning and environmental planning. As a result of the assessment, it was found that both national and regional plans need to improve considering the natural ecology part and water resource and quality part. In addition, it was derived that the detailed contents of the indicator can not be reflected according to the characteristics in the higher-level plan. Therefore, it has been found necessary to include proclamatory contents so as to be able to establish a detailed plan that reflects environmental goals in the lower-level plan.

한강 수변구역의 식물상 및 식생변화에 관한 연구 (A Study on the Flora and Vegetation Changes in the Riparian Zones of Han River Watershed)

  • 이종문;조용현;김현우
    • 한국환경복원기술학회지
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    • 제22권2호
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    • pp.13-30
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    • 2019
  • The purpose of this study was to investigate changes in vegetation and flora after five years through field surveys data with the Han Gang Watershed Management Committee (2013) data in order to observe natural vegetation changes in the riparian zone of Han River watershed. As a result, the flora of the riparian zone in 2012 were listed total 231 taxa, 66 families, 158 genus, 207 species, 23 varieties, and 1 forms, and in 2017, a total 247 taxa, 74 families, 174 genus, 218 species, 27 varieties, and 2 forms were identified. The number of rare plants decreased from 4 taxa in 2012 to 2 taxa in total in 2017, and the number of endemic plants increased from 1 taxa to 3 taxa. The number of specific plants by floral region decreased from 21 taxa (9.1% of all 231 taxa of flora) in 2012 to 16 taxa (6.5% of all 247 taxa of flora) in 2017. The total number of naturalized plants is analyzed to increase from 35 taxa, a naturalization rate of 15.15% (all 231 taxa of flora) and urbanization index of 11.2% (all 312 taxa of naturalized plants) in 2012 to 44 taxa a naturalization rate of 17.8% (all 231 taxa of flora) and urbanization index of 14.1%(all 312 taxa of naturalized plants) in 2017. The ecosystem disturbance species showed an increase in both number of species and cover degree grades, indicating that the riparian zone changed in a negative direction.

휴양림 조성 대상지 선정을 위한 타당성 평가 연구 - 경기도 광주시를 중심으로 - (A Study on the Feasibility Assessment for Selecting Recreation Forest Sites: The Case of Gwangju-si in Gyeonggi-do)

  • 서정영;염성진
    • 한국환경과학회지
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    • 제28권11호
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    • pp.959-969
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    • 2019
  • This study sought to contribute to the revitalization of local economy by developing a natural recreation forest, which is the base of ecotourism recreation, through utilizing forest resources and the natural environment of Gwangju-si. The study conducted a feasibility assessment through on-site surveys such as the suitability of the candidate sites, location analysis, and possibility of damage to the forest, before developing recreation forest sites in Gwangju-si and, based on the result, selected appropriate subject sites. The candidates for this study were 5 forest sites such as one site in the Mokheon-dong area, two in the Docheok-myeon area, and one in the Toechon-myeon area. For this study, the current status of the natural recreation forest was surveyed, its feasibility index and assessment process were investigated, and the local status and related regulations of Gyeonggi-do and Gwangju-si were reviewed. The final subject sites were selected after feasibility assessment utilizing assessment index in order to evaluate the candidate sites. The feasibility assessment was conducted after three separate on-site surveys for each candidate site between October 2018 and January 2019 utilizing "The Feasibility Assessment Criteria for Natural Recreation Forest (Notification 2018-71)" of the Korean Forest Service. The items instrumental to the feasibility assessment were classified into landscape, location, water system, induction of recreation, and development condition; the assessment was made after redefining each item into detailed items. Through this process, the Usan-ri area was selected as the final site for developing natural recreation forest, having obtained more than 100 points according to "The Feasibility Assessment Criteria for Natural Recreation Forest" of the Korean Forest Service. In order to develop natural recreation forest in the Usan-ri area in the future, further discussion is necessary with the relevant departments in consideration of the degree of ecological zoning map.

AHP 기법을 이용한 농촌 커뮤니티 리질리언스 지표 도출 연구 (Assessing Community Resilience in Rural Regions Using the Analytic Hierarchy Process Method)

  • 김은솔;이재호
    • 농촌계획
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    • 제28권1호
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    • pp.37-47
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    • 2022
  • The purpose of this study is to introduce the concept of community resilience to rural society and build an index suitable for the reality of rural areas. Furthermore, by calculating the importance of evaluation factors, it was attempted to present priorities and alternatives for each evaluation factor. By stratifying the derived indicators, a survey was conducted targeting 20 researchers, practitioners, and public officials, three groups of experts working in rural areas who were well aware of the realities and problems of rural areas. In the survey, a pairwise comparison was performed to compare factors 1:1 to calculate the importance, and for rational and consistent decision-making, decisions were made in the 9-grade section. Using the collected data, consistency analysis that can evaluate reliability in the decision-making process and the relative weight of evaluation factors were calculated through AHP analysis. As a result of the analysis, as a result of examining the priority of final importance by summarizing the importance of all evaluation factors, 'Income creation using resources' > 'Population Characteristics' > 'Tolerance' > 'External Support' > 'Social Accessibility' > 'Physical Accessibility' > 'Community Competence' > 'Infrastructure' > 'Leader Competence' > 'Natural Environment' was derived in the order. In the study dealing with urban community resilience indicators, social aspects such as citizen participation, public-private cooperation, and governance were presented as the most important requirements, but this study differs in that the 'income creation' factor is derived as the most important factor. This can be seen through the change in the income difference between rural and urban areas. The income structure of rural areas has changed rapidly, and it is now reaching a very poor level, so it is necessary to prepare alternatives to 'income creation' in the case of rural areas. Unlike urban indicators, 'population characteristics' and 'tolerance' were also derived as important indicators of rural society. However, there are currently no alternatives to supplement the vulnerability by strengthening the resilience of rural communities. Based on the priority indicators derived from the study, we tried to suggest alternatives necessary for rural continuity in the future so that they can be supplemented step by step.