• Korean Journal of Environment and Ecology
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• 제14권1호
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• pp.46-56
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• 2000

Vegetation structure of $Hwangs\v{o}ng$ Park in $Ky\v{o}ugju$ was investigated to study ecological value and to suggest a desirable management proposal. To do this, twenty plots were set up and surveyed. The $Hwangs\v{o}ng$ Park forest was classified into five plant communities by the DCA technique, which were two types of Pinus densiflora communities, Quercus spp.-P. densiflora, Robinia pseudoacacia and Q. mongolica community. In the diversity analysis, 29 woody species were observed, but species composition was simple. No. of average species is $5.4\pm2.9$ per a plot($100m^2$), and Pinus densiflora is a dominant species in DBH $27\sim47cm$ class. From the results of tree ring and growth analysis, it was found out that pinus densiflora community of $Hwangs\v{o}ng$ Park has a historical and ecological value, but recently the growth rate was decreasing. The management proposal was suggested upon to the above results.

• Korean Journal of Environmental Biology
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• 제34권4호
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• pp.233-239
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• 2016

The purpose of this study is to investigate the response of the soil mesofauna and ground-dwelling arthropods to vegetation structure and composition in a mountain pasture. The pasture mainly comprised five types of plant communities; Agrostis alba - Phleum pratense community, Poa pratensis community, Festuca ovina community, Rumex acetosella community, and the shrub assemblage comprised Spiraea miyabei-Spiraea salicifolia community. Soil chemical properties including the pH, EC and nutrient levels were influenced by plant communities. Plant-specific responses were observed for bacteria-feeding and plant-feeding soil nematodes. Collembola and Oribatida having the same feeding habit were influenced differently by plants. nMDS showed that the community of ground-dwelling arthropods were separated by vegetation types. Species numbers of arthropods were different among different plant communities. Our results indicate that vegetation structure and composition can influence both abundance of diversity of terrestrial fauna.

• Journal of Korean Society of Forest Science
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• 제57권1호
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• pp.1-7
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• 1982

The simple logistic growth model on the logistic curve, being originally a kind of population growth curve has also been sometimes utilized to describe growth curves in herbaceous plants such as duckweed and sun-flowers. It has already been recognized that the agreement between the theoretical calculations and the empirical observations is quite satisfactory form a practical point of view. It remains, however, still doubtful whether the logistic curve could be applied to the growth or ordinary woody plants which is quite different in its character from that of herbaceous plants. In this study, the simple logistic model, being a basic tool of stand density management, is applied to yield data from pine stands in order to test the adequacy of the model An attempt of testing the significance of the fit is made by applying the Chi-square test.

• Journal of Korean Society of Forest Science
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• 제94권1호통권158호
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• pp.1-5
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• 2005

This study was carried out to survey the growth and the photosynthesis of Salix gracilistyla, the reduction rate of nitrogen and phosphoric acid by the plant grown in waterway soil. The results were summarized as follows; I. The contents of nitrogen and phosphoric acid at waterway soils of Mangyeong river showed the highest level in the around Samrye railway bridge where was located in the downstream and livestock complex. 2. The Salix gracilistyla which grown in waterway soil showed that the growth of stem length and diameter were 170~215% and 42.3~79.3%, respectively. In addition the growth rate of Salix gracilistyla was increased with increasing nitrogen concentrations in waterway soils. 3. The rate of photosynthesis was high in waterway soil contained high nitrogen and it appeared the highest in August. 4. The nitrogen and phosphoric acid by Salix gracilistyla grown in waterway soil were removed about 14~15% and 9~11 %, respectively. The Salix gracilistyla was effective removing nitrogen more than phosphoric acid.

• The Korean Journal of Quaternary Research
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• 제15권2호
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• pp.83-91
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• 2001

The environmental change during the upper Holocene was restored at Kimpo alluvial plain on the left bank of Han-river near the Yellow Sea according to the results of pollen analysis and carbon dating, based on the sea-level change from Ilsan area. Pollenzone I (5.8~7.0 m.a.s.l.) was the period of AP-dominance, including mostly Alnus. Study area was under the lagoon or swamp environment influenced by Flandrian transgression during 5,000~3,200 BP. Pollenzone II (7.0~7.4 m.a.s.l.) was the period of Spore & NAP-dominance. It represents that the vegetational environment was changed to drier condition by falling underwater surface caused by sea-level regression, and influenced by human activity during 3,200~2,300 BP. Subzone I a represented the characteristics of the climax of transgression. During subzone I b, herbs with the dominant Alnus were increased gradually, and it was correlated to the stagnation of high sea-level. Subzone II a was the dominant period of Spore by the gradual falling of sea-level. After that, the study area in swamp was emerged to the lowland by the fallen sea-level and herbs, especially Gramineae increased suddenly during Subzone II b. The sudden increase of NAP such as Artemisia, Chenopodiaceae and Umbelliferae with Gramineae during this period indicates the beginning of agriculture at this study area.

• Korean Journal of Agricultural and Forest Meteorology
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• 제6권1호
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• pp.30-37
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• 2004

This study investigated the structural characteristics of Taxus cuspidata communities on Mt. Hambaek. The vegetation consisted of 9 species in the T$_1$(tree) layer, 35 species in the T$_2$(subtall tree) layer, 28 species in the S(shrub) layer, and 69 species in the H(herb) layer. The dominant species of the T$_1$ layer was Taxus cuspidata and that of the T$_2$ layer was Acer tschonoskii var, rubripes. The dominant species of the S layer was Tripterygium regelii, and the dominant species of the H layer was Pseudostellaria palibiniana. The diameter distribution of the dominant five species in the T$_1$ and T$_2$ layers indicates that these Taxus cuspidata forests may be gradually dominated by Quercus mangolica and by Tripterygium regelii. The composition of biological type was Ph-D$_1$-R$_{5}$-e.

• Korean Journal of Plant Resources
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• 제20권4호
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• pp.312-320
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• 2007

The resource plants at the reclaimed seaside in Songdo was listed 170 taxa: 39 families, 113 genera, 144 species, 23 varieties, 2 forms and 1 hybrid. In those, woody plants were 18 taxa (10.6%) and herbaceous plants were 152 taxa (89.4%). Among 170 taxa listed was confirmed 107 taxa of edible plants (62.9%), 99 taxa of medicinal plants (58.2%), 55 taxa of ornamental plants (32.4%) and 77 taxa of the others (45.3%). Salt plants (Including dune plants) consists of 12 taxa (Scirpus planiculmis, Sllaeda japonica, Artemisia scoparia, Scorzonera albicaulis, etc.). Specific plants by floral region were total 5 taxa; Vicia bungei in class IV, Koelreuteria paniculata in class III, Grewia biloba var. parviflora, Lysimachia fortunei, Rhapontica uniflora in class I. The naturalized plants in this site were 11 families, 27 genera, 37 species, 1 varieties, 38 taxa and naturalization rate was 22.4% of all 170 taxa resource plants.

• Proceedings of the Plant Resources Society of Korea Conference
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• 한국자원식물학회 2010년도 정기총회 및 추계학술발표회
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• pp.19-19
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• 2010

황칠나무(Dendropanax morbifera Lev.)는 두릅나무과(Araliaceae)에 속하며 학명에서 뜻하는 바와 같이 목본 (Dendro), 전능약(Panax)이라는 의미가 있고 나무인삼이라 불리기도 하며 줄기에 상처를 내면 노란액이 나온다고 해서 황칠나무(D. morbifera)라는 이름이 붙여졌다. 두릅나무과는 우리나라에서 최고의 약재들로 손꼽히는 인삼(Panax ginseng), 가시오갈피(Eleutherococcus senticosus) 등의 약용식물을 포함하고 있어서 황칠나무는 황칠수지액 이외에 약용식물로서의 무한한 개발 가능성을 내포하고 있다. 따라서 본 실험은 황칠나무의 기내 부정근 유도 및 증식조건의 확립을 목적으로 수행되었다. 우선 황칠나무의 기내 발아체로부터 부위(잎, 줄기, 뿌리)를 달리하여 부정근을 유도한 결과, 잎은 줄기나 뿌리보다 양호한 부정근의 유도를 보였다. 또한 유도된 부정근을 이용하여 옥신의 종류에 따른 부정근 유도율을 조사한 결과 IBA와 NAA는 IAA와 2.4-D보다 높은 유도율을 보였다. IBA의 농도에 따른 유도율과 증식효율은 IBA가 1.0 mg/L 첨가되었을 때 가장 높은 유도 및 증식효율을 보였다. 최적의 액체배지조건을 확인하고자 sucrose의 농도와 염농도를 달리하여 실험한 결과 1/2MS 배지는 MS 배지보다 10%정도 높은 증식율을 보였다. 액체배양 된 황칠나무의 부정근을 각각 1/2MS 배지에 30 g/L sucrose, 3.0 mg/L IBA가 첨가된 5 L volume 생물반응기에 4주 간 배양한 대조구와 2주 후 IBA의 농도를 1.0으로 낮추어 배양한 실험구에서 2주후 IBA의 농도를 낮추어 배양한 실험구에서 대조구보다 약 2배 높은 부정근의 증식량을 보였다. 결국, 황칠나무의 종자발아체를 이용하여 부정근의 유도 및 증식조건에 필요한 기내배양조건을 확립하였고, 플라스크와 생물반응기 배양을 통해 효율적인 실험실 내 증식조건을 확립하였다. 본 실험결과는 향후 황칠나무 천연추출물을 활용한 향장품/식,의약품 소재의 대량확보 차원에서 중요한 가치를 내포하고 있다고 조심스럽게 사료된다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 한국자원식물학회 2010년도 정기총회 및 추계학술발표회
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• pp.4-4
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• 2010

식물자원은 예로부터 인류의 생활과 긴밀한 관계를 유지하면서 인류에게 삶의 터전을 제공하였으며 쾌적한 환경을 유지시켜 주는 기반이 되었음은 물론 인류의 생존을 위한 많은 재화를 공급하여 왔다. 이러한 식물자원의 가치는 인간생활의 기초적 의 식 주 뿐 만 아니라 질병치료를 위한 재료로도 활용되고 있다. 제주도는 지리적으로 아열대권 생물자원의 확보 및 관리가 용이한 위치에 있어 아열대 자원 및 동북아섬 자원의 보존과 활용을 위한 전진기지로서 최적지이며, 난대, 온대, 한대 및 아고산대에 걸쳐 2,100여종의 식물자원이 분포하는 생태계 보고로 알려져 있다. 특히, 진시황이 불로초를 찾아 신하를 보낸 곳이 제주도라고 전해지고 있는 만큼 이는 제주가 많은 자원식물이 분포하고 있음이 그 옛날에도 알려져 있었다는 증거라 할 수 있다. 제주에 분포하거나 재배되는 식물 중 약용 및 식용 식물자원으로 잠재적 가치를 갖고 있는 식물은 550여 분류군으로서, 양치식물 43종류, 나자식물 6종류, 단자엽식물 31종류, 쌍자엽식물 370종류 등이다. 이러한 자원식물 중 상록성 목본 31종류, 낙엽수 105종류, 만경류가 51종류, 초본류(1년초 또는 다년초)가 358종류이며, 뱀톱, 천남성, 박새 등 독성을 가지는 식물도 43종류가 포함되어 있다. 비록 기존 알려진 약용 및 식용 식물자원이 산업적 중요성을 가지고 있다고는 하나 그 약효나 효능의 검정이 제대로 이루어지고 있지 않은 나머지 자생식물까지 포함하면 상당수의 제주 자생식물이 자원식물로 사용될 수 있는 잠재적 가치를 가지고 있다고 할 수 있다. 최근 생활수준의 향상으로 삶의 질과 건강에 대한 관심이 집중하고 있으며, 자원식물 유래 천연물을 소재로 한 향장품 및 건강기능성 식 의약품을 포함한 기능성 상품은 안전성이 보장되며 우수한 생리활성이 있는 것으로 밝혀지면서, 자원식물을 소재로 한 기능성 상품의 개발에 대한 수요가 증가하고 있는 실정이다. 제주지역도 청정지역 제주에 자생하고 있는 자원식물의 잠재적 가치를 활용하여 미래 제주 창출을 위한 신산업육성을 위한 노력을 기울이고 있다. 특히, 제주 자원식물들의 잠재적 가치를 활용하여 부가가치를 높이기 위해 건강 뷰티 생물산업을 지역전략산업으로 추진하면서 제주 자원식물들의 새로운 잠재적 가치를 조명하고 있어 이에 대한 지역내 추진노력 및 관련 산업현황 등을 정리하여 몇가지 견해를 제기하고자 한다.

• Journal of the Korean association of regional geographers
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• 제21권2호
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• pp.342-354
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• 2015

We suggested definition and classification scheme of uninhabited islands in Taeanhaean National Park for efficient management. Islands (seom) and reefs (yeo) were classified based on approximate HHW. Uninhabited islands were categorized into vegetated islands and rocky islands depending on presence of woody vegetation cover for physical geographic and ecological value and importance. Reefs were also divided into an underwater reef and a reef which covers and uncovers based on approximate LLW. We excluded those areas which are not separated from main land by waterbody even though it is in approx. HHW from islands. We considered several divided areas which adjoin geographically and ecologically one another under the condition of approx. LLW as an island. By using above schemes, we categorized 50 uninhabited islands in Taeanhaean National Park into three groups; 24 vegetated islands, 14 rocky islands, and 12 reefs. If the public institutions adopt these schemes as national standards, it will be useful in managing uninhabited islands nationwide.