• Korean Journal of Environment and Ecology
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• v.21 no.2
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• pp.161-167
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• 2007

To investigate the structure and the conservation strategy of Korean native species, the Abies koreana forest at sub-alpine zone centering on the Witsaeorum(1,714m) shelter in Hallasan National Park was selected for a survey subject with 20 plots $(10{\times}10m)$ set up with random sampling method. Mean importance percent(MIP) of Abies koreana showed the highest numerical value-57.7%, and that of faxus cuspidata was the next value-16.2%. High positive correlations were shown between Taxus cuspidata and Prunus maximowiczii, Euonymus alatus; Betula ermani and Berberis amurensis var. quelpaertensis, Prunus sargentii; Prunus maximowiczii and Euonymus alatus; Berberis amurensis var. quelpaertensis and Prunus sargentii. Vigor of Abies koreana was so low that as much as 6.44% of total number of Abies Koreana investigated were dead. DBH of dead individuals ranged mainly from 5cm to 15cm.

• Korean Journal of Environment and Ecology
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• v.14 no.1
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• pp.11-17
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• 2000

지리산국립공원의 장터목을 중심으로 남향사면인 중산리-장터목지역과 북향사면인 가내소폭포-장터목지역을 대상으로 사면방향과 해발고에 따른 교목츠의 산림구조를 조사분석하였다 북향사면은 남향사면에 비하여 교목층의 밀도 흉고단면적 종다양도가 높은경향을 보였다 특수한 지형인 주능선부에 위치하는 정부를 제외하면 해발고가 ？아짐에 따라 교목층 전체의 평균 흉고직경과 흉고단면적은 북혀 사면에서는 감소하는 반면 남향사면에서는 증가하는 경향을 보였다 종수, 종다양도, 균재도는 남향사면과 북향사면 모두 해발고가 높아짐에 따라 감소하였다 남향사면과 북향사면에서 모두 해발고가 증가함에 따락 중요치가 높아지는 수종은 구상나무 철쭉꽃 등이었으며 중요치가 감소하는 수종은 졸참나무 서어나무 생강나무 등이었다 cluster 분석결과 남향사면 하부의 졸참나무-활엽수군집 남향사면 중부와 북향사면 하부의신갈나무-전나무군집 남향사면 상부와 북향사면 상중부의 구상나무-활엽수군집 정부의 구상나무군집 등 4개 유형의 군집으로 구분되었다. 졸참나무 산뽕나무 비목나무 고로쇠나무 서어나무 다릅나무 등의 수종간에는 유의적인 정의 상관이 있어으며 구상나무와 사닥나무는 노각나무와 유의적인 부의 상관이 있었다.

• Research in Plant Disease
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• v.30 no.2
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• pp.165-175
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• 2024

The Korean fir tree (Abies koreana), an endemic species of South Korea, is experiencing a severe decline in population due to climate change. Studies on the conservation of Korean fir have been extensive, yet research regarding its correlation with rhizosphere bacterial communities remains scarce, warranting further investigation. In this study, metagenome amplicon sequencing targeting the 16S rRNA V4 region was conducted to examine the presence of specific bacterial communities in Korean fir and to investigate potential differences based on habitat types (rhizosphere of native or cultivated trees, soil of dead trees, and bulk soil) and seasonal variations (April, June, September, November). Here we show that although we could not identify specific taxa highly specifically with Korean fir, the rhizosphere bacterial community in native trees exhibited less variability in response to seasonal changes compared to that in bulk soils. Suggesting the establishment of relatively stable bacterial populations around the Korean fir natural habitat. Further research on other types of rhizosphere and/or microbes is necessary to investigate the distinct relationship of Korean fir with microbial communities.

• The Korean Journal of Mycology
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• v.47 no.3
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• pp.199-208
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• 2019

In this study, the community structures of the ectomycorrhizal (ECM) fungi in the roots of Abies koreana and Taxus cuspidata were investigated at different altitudes of Mt. Halla. We identified the collected ECM root tips based on morphological characteristics and phylogenetic analysis through sequencing of the rDNA ITS regions. From the roots of A. koreana and T. cuspidata, 11 species and 12 species were identified, respectively. The Shannon's index and species evenness and abundance of the ECM fungi were higher in the higher than lower regions, regardless of host plant species, however, the number of ECM root tips showed the opposite pattern. The community similarity among the ECM fungi in A. koreana was significantly higher than that among the ECM fungi in T. cuspidata or than that between A. koreana and T. cuspidata (p < 0.05). These results could be useful for the conservation and management of the habitat of A. koreana, which is threatened with extinction due to increasing ambient air temperature.

• Korean Journal of Environment and Ecology
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• v.13 no.4
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• pp.392-403
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• 2000

지리산국립공원 거림계곡 식물군집구조를 파악하기 위하여 거림계곡 내 등산로를 따라 66개(6,600m2)의 방형구를 설정하였으며 DCA 기법을 이용하여 분석한 결과 해발고 740-950m 의 조사구는 졸참나무군집(군집I) 해발 950-1,340m의 조사구는 신갈나무군집(군집II) 해발 1,340-1,390m의 조사구는 구상나무-거제수나무군집(군집III)으로 분류되었다 상대우점치 흉고직경급별 분포 분석결과 각 군집의 우점종인 졸참나무 신갈나무 구상나무가 우점하는 군집으로 계속유지될것으로 판단되었으며 특히 관목층은 조랫대의 밀도가 높아 천이진행에 영향을 주는 동시에 종다양도가 낮은 것으로 판단되었다 한편 3개 군집간의 유사도지수는 낮은 상태로 해발고에 따라 식생구분이 명확하였다

• Korean Journal of Remote Sensing
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• v.39 no.3
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• pp.325-338
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• 2023

Korean fir (Abies koreana Wilson) is one of the most important environmental indicator tree species for assessing climate change impacts on coniferous forests in the Korean Peninsula. However, due to the nature of alpine and subalpine regions, it is difficult to conduct regular field surveys of Korean fir, which is mainly distributed in regions with altitudes greater than 1,000 m. Therefore, this study analyzed the vegetation change trend of Korean fir using regularly observed remote sensing data. Specifically, normalized difference vegetation index (NDVI) from Moderate Resolution Imaging Spectroradiometer (MODIS), land surface temperature (LST), and precipitation data from Global Precipitation Measurement (GPM) Integrated Multi-satellitE Retrievalsfor GPM from September 2003 to 2020 for Hallasan and Jirisan were used to analyze vegetation changes and their association with environmental variables. We identified a decrease in NDVI in 2020 compared to 2003 for both sites. Based on the NDVI difference maps, areas for healthy vegetation and high mortality of Korean fir were selected. Long-term NDVI time-series analysis demonstrated that both Hallasan and Jirisan had a decrease in NDVI at the high mortality areas (Hallasan: -0.46, Jirisan: -0.43). Furthermore, when analyzing the long-term fluctuations of Korean fir vegetation through the Hodrick-Prescott filter-applied NDVI, LST, and precipitation, the NDVI difference between the Korean fir healthy vegetation and high mortality sitesincreased with the increasing LST and decreasing precipitation in Hallasan. Thissuggests that the increase in LST and the decrease in precipitation contribute to the decline of Korean fir in Hallasan. In contrast, Jirisan confirmed a long-term trend of declining NDVI in the areas of Korean fir mortality but did not find a significant correlation between the changes in NDVI and environmental variables (LST and precipitation). Further analyses of environmental factors, such as soil moisture, insolation, and wind that have been identified to be related to Korean fir habitats in previous studies should be conducted. This study demonstrated the feasibility of using satellite data for long-term monitoring of Korean fir ecosystems and investigating their changes in conjunction with environmental conditions. Thisstudy provided the potential forsatellite-based monitoring to improve our understanding of the ecology of Korean fir.

• Korean Journal of Environment and Ecology
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• v.13 no.4
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• pp.330-339
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• 2000

지리산 국립공원의 동부지역을 대상으로 구상나무개체군 동태를 파악하기 위하여 1999년 7월에 49개의 조사구(20m$\times$15m)를 설치하여 식생구조를 조사하였다. 조사대상지의 구상나무는 북사면에서 해발 900m 이상 남사면에서 해발 1,000m 이상에서 분포하였다 구상나무의 상대우점치는 북사면의 경우 해발 1,300-1,500m 사이에서 높게나타났으며 남사면의 경우 해발 1,400-1,600m 사이에서 높게 나타났다. 조사구별 구상나무의 상대우점치는 북사면에서 높게 나타났으나 흉고직경 2-17m 미만의 개체수 경우 북사며에서보다 남사면의 조사구에서 많이 나타났고 대경목은북사면에서 많이 나타났다.

• Journal of Korean Society of Forest Science
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• v.68 no.1
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• pp.52-59
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• 1985

This study was carried out to compare the diameter increment of Pinus densiflora for.erecta, Pinus koraiensis, Larix leptolepis, Abies holophylla and Abies koreana growing in middle area of Korea. The results obtained were summarized as follows; 1) The difference in annual diameter increment among five species according to D.B.H classes showed to be the strongest in Pinus koraiensis the second rank Larix leptolepis, the third rank Pinus densiflora erecta, the fourth rank Abies holophylla and the weakest in Abies koreana. 2) It was inferred that when the D.B.H of Pinus densiflora for.erecta comes to 95cm, Pinus koraiensis 80cm, Larix leptolepis 80cm, Abies holophylla 140cm and Abies koreana 85cm respectively, their diameter do not increase. 3) Total D.B.H increment among five species according to tree age classes were ranked as follows; Larix leptolepis, Pinus koraiensis, Pinus derasiflora for.erecta, Abies holophylla and Abies koreana. 4) It was inferred that when the age of Pinus densiflora for.erecta comes to 200yrs, Pinus koraiensis 120yrs, Larix leptolepis 120yrs, Abies holophylla 260yrs and Abies koreana 300yrs respectively, their diameter do not increase. 5) Abies koreana showed the lowest diameter increment in comparison with other four species, while diameter increment in Abies holophylla and Abies koreana decreased in later age than other species.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.27-27
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• 2019

본 연구는 멸종위기 아고산수종 구상나무의 보존 복원을 위한 유전다양성을 고려한 표본추출전략을 구명하는데 그 목적이 있다. 2019년 9월에 한라산 영실 집단($14,000m^2$)에서 총 152개체를 대상으로 선발된 10개의 nSSR 마커를 이용하여 유전다양성 및 공간적 유전구조를 분석하였다. 평균 유전다양성은 관찰된 대립유전자수(A)가 7.2개, 유효대립유전자수($A_e$)가 3.6개, 이형접합도 관찰치($H_o$)가 0.528, 이형접합도 기대치($H_e$)가 0.595이며, 고정지수(F)는 0.071 이었다. 조사구내 구상나무 성목 152개체는 평균 수고 3.6 m, 흉고직경 17.3 cm로 나타났다. 구상나무의 개체목간 평균거리는 3.94 m, 임분밀도는 700 본/ha 이며 개체의 공간적 분포는 임의분포 형태로 나타났다. 구상나무의 유전변이에 대한 공간적 자기상관성(spatial autocorrelation) 분석 결과, 조사구의 구상나무는 약 15 m 이내에서 분포하는 개체들 간 유전적 유사성이 있게 분포하는 것으로 나타났으며 임분밀도가 높고 수고가 낮은 특성으로 인하여 비교적 작은 유전군락이 형성된 것으로 사료된다. 결과적으로 영실의 구상나무 집단의 보존 복원을 위한 표본추출전략은 15 m의 간격을 두고 개체를 선발하는 것이 타당한 것으로 나타났다.

• The Korean Journal of Ecology
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• v.24 no.5
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• pp.281-288
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• 2001

The relationships between the growths of Abies koreana W. and climatic factors were analyzed by the use of tree-ring analysis at the subalpine belt of Mt. Halla National Park. The four cores were extracted from each 21 trees at north-facing slope (1,900m a.s.1.). The site chronology was established on the periods from 1912 to 1999. The growth of A. koreana was very poor, in particular in the years of 1982, 1988 and 1996. Simple correlation was employed to analyze the relationship between the growth of A. koreana and climatic factors. The result of simple correlation indicates that the growth of A. koreana represent positive correlations both with the mean temperatures of April and previous November, and the precipitation of previous December and January. The presence of large number of frost-damaged scars in the individual trees of A. koreana implies that local freezing temperature conditions at Mt. Halla have occurred in 1964, 1965 and 1966. The correlations between the fir chronology SOI(Southern Oscillation Index) of previous January, February and November were significantly positive. The growth ratio of A. koreana demonstrates that this species is sensitive to seasonal variations. As the winter temperature rises, the growth ratio of A. koreana decreases, on the other hand, the increase of autumn temperature accelerates the growth ratio of A. koreana. The growth decline of A. koreana was observed from 51 cores out of the 54 cores, and the overall growth declines have initiated at 1978, 1982 and 1988. Distinct growth decline of A. koreana in the range of 70% is noticed at 34 cores out of the 51 cores. The decline of, A. koreana growth appears to be related to the winter temperature which has increased since mid-1970s.