• Journal of Korea Water Resources Association
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• v.54 no.9
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• pp.705-718
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• 2021

Climate change has a significant impact on vegetation growth and terrestrial ecosystems. In this study, the possibility of ecological drought was investigated using satellite remote sensing data. First, the Vegetation Health Index was estimated from the Normalized Difference Vegetation Index and Land Surface Temperature provided by MODIS. Then, a joint probability model was constructed to estimate the possibility of vegetation-related drought in various precipitation/evaporation scenarios in forest areas around 60 major ASOS sites of the Meteorological Administration located throughout Korea. The results of this study show the risk pattern of drought related to forest vegetation under conditions of low atmospheric moisture supply or high atmospheric moisture demand. It also identifies the sensitivity of drought risks associated with forest vegetation under various meterological drought conditions. These findings provide insights for decision makers to assess drought risk and develop drought mitigation strategies related to forest vegetation in a warming era.

• Proceedings of the Korean Geotechical Society Conference
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• 2010.03a
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• pp.981-983
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• 2010

도시 개발로 인한 불투수면의 증가 등으로 도시 수문환경의 변화와 물순환 시스템의 훼손 등이 발생하고 있다. 이러한 현상은 도시 홍수 위험의 증가, 유출량의 증가, 증발산량의 감소, 토양 침투량의 감소와 더불어 토양생태계, 지하수환경 및 하천 환경 등에 영향을 미친다. 여기에 비점오염원의 증가로 인한 하천 등의 수질 및 수생태계 영향 등 전반적으로 도시환경에 미치는 영향은 지대하다. 이에 기존의 중앙집중식 빗물관리에서 벗어나 발생원에서 빗물을 관리하는 자연순응형의 분산식 빗물관리 방식 및 그 시스템의 적용은 미국과 독일을 비롯한 유럽에서 정책화되어 있다. 이들 국가에서는 이러한 시스템의 적용에 따른 효과 모니터링을 추진하고 있는 상황이다. 우리나라는 이러한 자연형 물순환 시스템의 도시 적용을 이제 시도하고 있으며, 그 일환으로 아산신도시에 적용을 위한 사전 데이터 확보를 위해 식생수로를 아산지역의 주차장 유출수를 처리하기 위해 설치하였다. 본 연구에서는 주차장 유출수 관리를 위한 발생원 처리 시설인 식생수로의 설치, 운영 등에 대한 내용을 소개하고자 한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.1471-1475
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• 2010

본 연구에서는 미래 기후변화 시나리오를 이용하여 우리나라의 미래 산림식생 분포 변화를 예측하고 이를 SWAT 모형에 적용하여 영산강호유역의 증발산량 변화를 분석하고자 하였다. 현 기상관측자료(1971~2000)를 이용하여 현재의 기후를 판정하고, 기상청에서 제공한 GCM(MIROC3.2)의 통계학적 다운스케일링으로 구성된 RCM 자료를 이용하였다. 산림식생의 분포는 임상도에 의한 현존 식생군락과 환경인자(강수량, 기온, 지형인자, 토양유기물 함량 등)간의 상관분석을 실시하여 상관관계가 높은 주요 환경변수들을 결정하고, 이들을 종속변수로 하는 다항로짓모형을 구성하여 추정하였다. 이 모형을 이용하여 미래의 주요 환경변수들을 입력, 미래 2020s, 2050s, 2080s의 우리나라 산림식생 분포를 예측하였다. 예측된 산림식생 분포를 적용하여 미래 증발산량을 분석하기 위해 남쪽의 따뜻한 지역으로서 활엽수림이 있는 영산호유역($3,455.0km^2$)을 선택하였다. 1998~2002 5년간의 유출량 자료를 이용 모형을 보정하였다. 모형의 검증은 보정 매개변수의 평균값들을 통해 2003~2008년 유출량을 모의 하였다. 예측된 미래식생분포를 이용하여 토지이용도를 재구축하였으며 재구축 결과 활엽수는 $715.2km^2$ 늘어나며 혼효림은 현재에 비해 2080s에 $167.1km^2$ 침엽수는 $548.1km^2$ 줄어드는 경향을 보였다. 영산호유역에서는 미래의 증발산량이 증가하며, 식생분포를 고려하였을 경우 2080s년에는 고려하지 않은 경우에 비해 약 4.52mm 감소하는 것으로 분석되었다.

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2002.05a
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• pp.43-43
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• 2002

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 1999.04a
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• pp.91-93
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• 1999

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2003.04a
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• pp.106-109
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• 2003

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.860-864
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• 2010

하천은 유속과 수심을 변화시키는 환경과 수역에서 고수부지까지의 다양한 지형변화, 홍수에 의한 파괴와 재생 등 하천 특유의 조건을 가지고 있어 여러 생물이 공존하여 살 수 있는 환경을 가지고 있다. 근래 하천은 친수성을 높이고 하천오염문제를 해결하기 위해 자연친화적인 하천으로 개발 방향이 바뀌고 있지만, 생물 서식처 기능 보다는 친수성이 강조되는 경우가 많다. 본 연구에서는 하천에 도입을 원하는 식생에 대한 환경유량을 분석하여 도입 가능한 하천 영역을 찾는 것이 목적이다. 연구대상지역은 황룡강이며 지형자료는 HEC-RAS의 횡단자료를 이용하여 유한요소망으로 만들어 사용하였다. 하천 식생을 고려한 환경유량을 계산하기 위하여 HEC-EFM을 이용하였다. 연구지역의 수위-유량자료, 도입 가능한 식생의 Life Cycle을 분석하여 HEC-EFM에 입력하여 환경유량을 계산하였다. 산정한 환경유량을 HEC-RAS모형으로 모의하여 환경유량에 맞는 수위 유량을 계산하고 이 결과를 HEC-GeoRAS모형을 이용하여 도입 가능한 영역을 시각화 하였다.

• Korean Journal of Environment and Ecology
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• v.32 no.3
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• pp.289-302
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• 2018

The study investigated the forest vegetation in 59 plots between June 2017 and August 2017 to understand the forest vegetation structure of the protected zone for forest genetic resource conservation (forest genetic resource reserve area) in Heuksando Island. We classified the vegetation using the Z-M phytosociological method analyzed the importance value and species diversity of each vegetation classification. The analysis showed the Camellia japonica community group at a top level of forest vegetation hierarchy. In the level of community, it was classified into Dendropanax morbiferus community (Vegetation unit 1; VU 1), Carpinus turczaninowii community, and C. japonica typical community (VU 6). C. turczaninowii community was subdivided into Buxus koreana group (VU 2), Rhododendron mucronulatum group (VU 3), Vitis amurensis group (VU 4) and C. turczaninowii typical group (VU 5). Therefore, it was classified into a total of six vegetation units (one community group, three communities, and four groups). The analysis of the mean codominant value of each VU show that Quercus acuta was the highest in VU 1, C. turczaninowii in VU 2, Pinus thunbergii in VU 3, Pinus densiflora in VU 4, and Castanopsis sieboldii in VU 5 and VU 6. The analysis of species diversity showed that VU 2 was the highest among six units in species richness index, species diversity index, and species evenness index. VU 6 showed the highest among six units in species dominance index. In conclusion, a synecology approach to manage six units and twelve species groups was needed for the forest vegetation of Heuksando Island protected area for forest genetic resource conservation.

• Korean Journal of Environment and Ecology
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• v.33 no.1
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• pp.28-51
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• 2019

The purpose of this study was to analyze forest vegetation structure in Marugeum (the ridge line) area between Dakmokryeong and Daetjae in Baekdudaegan through vegetation classification, importance value, species diversity, and CCA using the data that were collected from 245 quadrates through Braun-Blanquet vegetation survey method from May to September in 2017. The results of the forest vegetation classification identified 8 vegetation units with Quercus mongolica community group at the highest level. Q. mongolica community group was classified into the Cornus controversa community, Buxus koreana community, Sasa borealis community, Abies nephrolepis community, and Q. mongolica typical community. C. controversa community was further classified into Quercus dentata group, Filipendula glaberrima group, Larix kaempferi group, and C. controversa typical group. The result of the important value analysis showed that Q. dentata had the highest importance value at 19.1% in vegetation unit 1 while Q. mongolica had the highest importance value at 22.7%, 38.3%, 25.6%, 41.3%, 27.9%, and 41.6% in vegetation unit 2, 4, 5, 6, 7, and 8, respectively, and L. kaempferi had the highest importance value at 27.6% in vegetation unit 3. As such, Q. mongolica species generally represented the communities of Marugeum (the ridge line) area of Dakmokryeong to Daetjae in Baekdudaegan. The results of species diversity showed that vegetation unit 1 and 2 were 3.305 and 3.236, respectively, which were relatively higher than other vegetation units. It was considered that this result was due to the influence of high emergence of present species. The results of the CCA analysis of the correlations between biotic environmental factors and vegetation types showed that vegetation unit 1 was mainly correlated with the megaphanerophyte ratio and vine plant ratio. In the correlations between abiotic environmental factors and vegetation types, vegetation unit 7 was significantly correlated with altitude. From the perspective of ecological management, vegetation unit 5 represented by B. koreana community was inhabited by a variety of plants due to the species composition and location environment due to the geological characteristics that are typical of limestone area. Vegetation unit 7 represented by A. nephrolepis community was typified as subalpine vegetation widely distributed by relict species and endemic species. We concluded that it is necessary to manage these vegetation units with an ecologically differentiated approach.

• Korean Journal of Environment and Ecology
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• v.36 no.5
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• pp.507-524
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• 2022

In this study, we revealed the location environment and community structural characteristics after extensively investigating Korea's warm-temperate island areas and categorizing vegetation through TWINSPAN analysis. Based on it, this study aims to suggest the direction of the vegetation restoration plan for warm-temperate forests by deriving a restoration strategy for each vegetation type. The vegetation types were clearly divided into eight types, and communities I through IV were good evergreen broad-leaved forests dominated by Machilus thunbergii and Castanopsis sieboldii. On the other hand, communities V through VIII were Pinus thunbergii forest, deciduous broad-leaved forest, and artificial forest, and retrogressive succession vegetation in the warm-temperate areas. The environmental factors derived from the DCA analysis were altitude (average temperature of the coldest month) and distance from the coastline (salt tolerance). The distribution pattern of warm-temperate forests has been categorized into M. thunbergii, C. sieboldii and Cyclobalanopsis spp. forest types according to the two environmental factors. It is reasonable to apply the three vegetation types as restoration target vegetation considering the location environment of the restoration target site. In communities V through VIII, P. thunbergiiand deciduous broad-leaved formed a canopy layer, and evergreen broad-leaved species with strong seed expansion frequently appeared in the ground layer, raising the possibility of vegetation succession as evergreen broad-leaved forests. The devastated land where forests have disappeared in the island areas is narrow, but vegetation such as P. thunbergii and deciduous broad-leaved forests, which have become a retrogressive succession, forms a large area. The restoration strategy of renewing this area into evergreen, broad-leaved forests should be more effective in realizing carbon neutrality and promoting biodiversity.