• The Korean Journal of Ecology
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• 제27권2호
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• pp.99-106
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• 2004

동해안 산불피해지역 중 시급한 복구계획을 요하는 사면지역에 대한 산불 후 경과 년 수에 따른 일반적인 식생발달 모형을 개발하였다. 또한 산불피해지역을 관리하기 위한 기법 개발에 사용될 매개변수로서 식생지수들의 발달모형을 제시하였다. 산불 피해지역에서 맹아로 재생하는 목본 식물량을 추정하기 위하여 총 17종의 상대 생장식을 구하였다. 산불 경과 후 교목층, 아교목층, 관목층 및 초본층의 4층 구조를 갖춘 완전한 형태의 숲으로 회복되는데 약 20년이 경과해야 하는 것으로 추정되었다. 산불 후 경과 년 수에 따라 최상층부 식생의 키, 목본의 기저면적 및 지상부 목본 식물량은 직선적인 증가 경향을 나타내었고, 전체 지상부 식피율과 낙엽층은 대수적인 증가 경향을 나타내었다. 식생지수 중 Ivc와 Ivcd는 산불 후 경과 년 수에 따라 대수적인 증가 경향을 그리고 Hcl과 Hcdl은 직선적인 증가경향을 나타내었다. 특히 산불 피해 후 2차 재해가 예측되는 초기 5년차 이내에서는 모든 식생 요인들이 입지요인이나 지력에 따라 공간적 이질성이 큰 것이 확인되었다. 식생 지수 중 Ivc와Ivcd는 산불 초기의 공간적 이질성을 표현하기에 적당한 지수이었고, Hcl과 Hcdl은 장기적인 식생구조의 발달을 예측하는데 유용한 지수로 판단되었다.

• 한국환경복원기술학회지
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• 제18권3호
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• pp.65-77
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• 2015

The urban park has important functions as a habitat for wildlife as well as open space of rest and community for people. This study was carried out to find what factors of structure and vegetation of urban parks could affect forest bird species diversity in Cheonan city. The study surveyed bird and vegetation species in 26 urban parks, Cheonan city. A correlation analysis and multiple linear regressions were performed to test whether habitat structure and vegetation were the major correlate with species diversity. The results showed the Dujeong park was the most high bird species diversity (H' = 2.13), and the Dujeong-8 park (H' = 2.02) and the Cheongsa park (H' = 1.73) were considerably higher than the other urban parks. The variables that were strongly correlated with bird species diversity were park area, number of subtree species, canopy of shrub, number of shrub species, shape index, canopy of subtree, canopy of tree, and impervious surface ratio. The regression of bird species diversity against the environmental variables showed that 3 variables of park area, canopy of subtree, and canopy of tree were included in the best model. Model variable selection was broadly similar for the 5 optimal models. It means park area and multi-layer vegetation were the most consistent and significant predictor of bird species diversity, because urban parks were isolated by built-up areas. Especially the subtree coverage that provides shelter and food for forest birds was an important variable. Therefore, to make parks circular-shaped and abundant multi-layer vegetation, which could be a buffer to external disturbances and improve the quality of habitats, may be used to enhance species diversity in creation and management of urban parks.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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• pp.598-601
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• 2007

Urban growth management is essential for sustainable urban growth. Monitoring physical urban built-up area is a task of great significance to manage urban growth. Detecting urbanized area is essential for monitoring urbanized area. Although image classifications using satellite imagery are among the conventional methods for detecting urbanized area, they requires very tedious and hard work, especially if time-series remote sensing data have to be processed. In this paper, we propose an effective urbanized area detecting method based on normalized difference vegetation index (NDVI) and normalized difference built-up index (NDBI). To verify the proposed method, we extract urbanized area using two methods; one is conventional supervised classification method and the other is the proposed method. Experiments shows that two methods are consistent with 98% in 1998, 99.3% in 2000, namely the consistency of two methods is very high. Because the proposed method requires no more process without band operations, it can reduce time and effort. Compared with the supervised classification method, the proposed method using vegetation indices can serve as quick and efficient alternatives for detecting urbanized area.

• Ecology and Resilient Infrastructure
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• 제6권4호
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• pp.267-276
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• 2019

상주 공검지는 8세기에 축조된 고대 유적 저수지로서 습지보호지역으로 지정되어 있다. 이곳에서 지속가능한 보전 전략을 수립하는데 필요한 기초자료를 수집하기 위하여, 현존 식생을 분류하고 식생도를 작도하며 식생의 구조적 특징을 파악하고 환경과의 관계를 규명하였다. 공검지 습지보호지역에서는 저습지, 하천, 산림, 초지, 농경지, 과수원 식생에 속하는 총 26개 식물군집이 분류되었다. 탈경향대응분석 (detrended correspondence analysis) 결과에 따르면 습지 식생의 구조는 주로 수심과 인간 교란에 따라서 영향을 받았다. 저수지 습지에서는 통발, 마름과 같은 부수식물과 연꽃, 부들류와 같은 정수식물이 수면을 완전히 피복하고 있었다. 2014년 이후에 점차 정수식물과 습생식물의 분포 면적이 늘어나는 육역화가 빠르게 진행되고 있었다. 습지보호지역의 지속가능한 보전과 복원을 위하여, 지형과 식생을 복원하고, 수문 체계를 회복시키며, 습지로부터 산지까지의 생태계 연결성을 회복한 것이 필요하다고 생각된다.

• 한국자원식물학회지
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• 제25권4호
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• pp.447-455
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• 2012

The phytosociological study was carried out to investigate the Corylopsis gotoana var. coreana community structural characteristics and soil environment of Mt. Baegun in Pochen. The vegetation data of total 9 relev$\acute{e}$s were analyzed by the Z$\ddot{u}$rich-Montpellier school's method. Three communities of Mt. Baegun were recognized : Corylopsis gotoana var. coreana - Quercus mongolica community, Corylopsis gotoana var. coreana - Carpinus laxiflora community, Corylopsis gotoana var. coreana typical community. The reanalysis to Corylopsis gotoana var. coreana community structural characteristics in south area classified 8 communities by literature. PCA analysis of Corylopsis gotoana var. coreana community distributed in the middle and southern area showed that the Corylopsis gotoana var. coreana community of the Mt. Jiri in the southern area was highly correlated with the one of Mt. Baegun in the middle area.

• 한국환경복원기술학회지
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• 제16권3호
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• pp.41-53
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• 2013

The study for the estimation potential natural vegetation was estimated the occurrence probability distribution using geographic information system(GIS) in Bukhansan National Park. Correlation and factor analysis were analyzed to estimate probability distribution. Coefficients were calculated by logistic regression analysis. Correlation coefficients were significantly at the 0.01 level. Commonality of elevation, annual mean temperature, warmth index and potential evapotranspiration were high value, but topographic index was low value. Communities of over the 0.3 points distribution probability, Quercus mogolica communities were the largest area, 76,940,900 $m^2$, Pinus densiflora communities area was 860,800 $m^2$, Quercus acutissima communities area was 500,100 $m^2$ and Quercus variabilis communities area was 1,000 $m^2$, but Q. aliena, Q. serrata, Carpinus laxiflora and Zelcova serrata communities was not appeared. Therefore, potential national vegetation of Bukhansan national park was likely to be Q. mongolica community, P. densiflora community, Q. acutissima community and Q. variabilis community.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제2권3호
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• pp.144-152
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• 2021

Sanankerto is one of pilot projects for tourism villages in Indonesia due to its natural tourism potential with a 24-ha bamboo forest located in Boon Pring Andeman area. However, the distribution of existing bamboo has never been identified or mapped. Thus, the mana gement is facing difficulty in planning and developing tourism potential as well as spatial management in the area. Therefore, the objectives of this study were to identify and analyze the structure of bamboo vegetation in the Boon Pring Tourism village an d to perform vegetation mapping. The type of research was descriptive exploratory with a cluster sampling technique (i.e., a two-stage cluster) covering an area of ± 10 ha. Bamboo vegetation analysis was performed by calculating diversity index (H'), evenness index (E), and Species Richness index (R). Data were collected through observation and interviews with local people and the manager to determine zonation division. Mapping of bamboo vegetation based on zoning was processed into thematic maps using ArcG is 10.3. Micro climatic factors were measured with three replications for each sub -cluster. Data were analyzed descriptively and quantitatively. Nine species of bamboo identified. Diversity, evenness, and species richness indices differed at each location. Activities of local communities, tourists, and manager determined the presence, number, and distribution of bamboo species. These bamboo distribution maps in three zoning (utilization, buffer, and core) can be used by manager for planning and developing natural tourism potential.

• 한국지반환경공학회 논문집
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• 제17권4호
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• pp.17-31
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• 2016

Many researchers have evaluated the influence of vegetation cover on slope stability. However, due to the extensive variety of site conditions and vegetation types, different studies have often provided inconsistent results, especially when evaluating in different regions. Therefore, additional studies need to be conducted to identify the positive impacts of vegetation cover for slope stabilization. This study used the Transient Rainfall Infiltration and Grid-based Regional Slope-stability Model (TRIGRS) to predict the occurrence of landslides in a watershed in Jinbu-Myeon, Pyeongchang-gun, Korea. The influence of vegetation cover was assessed by spatially and temporally comparing the predicted landslides corresponding to multiple trials of cohesion values (which include the role of root cohesion) and real observed landslide scars to back-calculate the contribution of vegetation cover to slope stabilization. The lower bound of cohesion was defined based on the fact that there are no unstable cells in the raster stability map at initial conditions, and the modified success rate was used to evaluate the model performance. In the next step, the most reliable value representing the contribution of vegetation cover in the study area was applied for landslide assessment. The analyzed results showed that the role of vegetation cover could be replaced by increasing the soil cohesion by 3.8 kPa. Without considering the influence of vegetation cover, a large area of the studied watershed is unconditionally unstable in the initial condition. However, when tree root cohesion is taken into account, the model produces more realistic results with about 76.7% of observed unstable cells and 78.6% of observed stable cells being well predicted.

• 한국방재학회 논문집
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• 제5권3호
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• pp.47-55
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• 2005

도시하천의 관리와 계획에 있어 식수에 따른 수리학적 특성의 변화는 명확히 분석되어야 한다. 본 연구에서는 도시하천의 식수기준을 분석하고, 도시하천의 고수부지내 식수가 가능한 지역을 표시한 식수허가지도 제작 방법을 검토하였다. 또한 식수에 따른 수리학적 영향을 준2차원 수치모형, HEC-RAS, FESWMS 모형을 활용하여 분석하였다 중랑천의 장안교부터 군자교까지의 구간을 대상으로 선정하여 100년 빈도 홍수량에 식수허가지도를 제작한 결과, 교목의 식수시에는 하천의 우안에 $0.5{\sim}1$본/ha 정도의 식수가 가능하였으며, 관목의 경우에는 좌안 및 우안의 중요수방구간을 제외한 지역에 식재가 가능하였다. 또한 관목의 식재에 따른 수리학적 영향은 약 12cm 정도의 수위상승 결과를 나타내었다. 따라서 대상구간에 식수에 따른 수위 상승은 적은 것으로 판단되므로 식수허가지도에 따라 식수가 가능할 것으로 판단된다.

• 한국환경생태학회지
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• 제17권2호
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• pp.153-168
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• 2003

최근 개발압력이 가중되고 있는 울진군 왕피천을 대상으로 하천 주변폭 약 1km씩을 대상으로 현존식생도, 녹지자연도, 식생구조 등 산림생태계 조사를 실시하였다. 현존식생도 분석결과 식생유형은 총 26개로 구분되었으며, 그 중 소나무가 우점하는 군락이 6개 유형으로 가장 많이 나타났다. 녹지자연도의 경우 등급 8지역이 전체 조사면적의 70.8%를 차지하였으며. 등급 9지역은 0.3%로 나타났다. 식물군락의 분류는 classification 기법 중 TWINSPAN을 이용한 결과 총 5개군락, 소나무군락(I), 소나무군락(II), 소나무군락(III), 신갈나무군락(IV), 굴참나무군락(V)으로 구분되었다. 각 군락별로 상대우점치를 이용하여 식생구조를 파악하였고, 그 밖에 종수 및 개체수분석 흉고직경급별 분석, 유사도지수 분석을 실시하였다.