• Korean Journal of Environment and Ecology
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• v.24 no.6
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• pp.630-637
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• 2010

This study was carried out to classify forest vegetation structure of Sobaeksan National Park from May to October in 2008 using the methodology of the ZM school's phytosociological analysis. The forest vegetation was classified into 1 community groups such as Quercus mongolica community group. Quercus mongolica community group was subdivided into 3 community such as Pinus densiflora community, Acer barbinerve community and Cornus controversa community. Pinus densiflora community was subdivided into Quercus variabilis group and Tilia amurensis group. Acer barbinerve community was also subdivided into Salix hallaisanensis group and Betula ermani group(subdivided into Taxus cuspidata subgroup and Betula ermani typical subgroup). Artificial forest type indicated 2 communities such as Larix leptolepis community and Pinus koraiensis community. Accordingly, the vegetation pattern of the surveyed areas were classified into 1 community groups, 5 communities, 4 groups, and 2 subgroups and the forest vegetation was classified into 8 units in total. The vegetation unit distributions was strongly correlated with sea level and topography in this research area.

• Korean Journal of Plant Resources
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• v.15 no.3
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• pp.188-210
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• 2002

Tonggo-san(1066.5m) is located at 36° 53' 00" - 36" 55' 00" in latitude, at 129° 10' 30" - 129° 13' 00" in longitude and on Seo-myeon, Uljin-gun and Subi-myeon, Yeongyang-gun in Gyeongsangbuk-do. Tonggo-san shows the typical vegetation patterns including the middle area of temperate region of Korea represented by the secondary forests of Quercus mongolica and Q. dentata. There was no detailed result on the flora and vegetation of Tonggo-san until now. Therefore, we tried to discuss on the distribution and availability of vascular plants including economical plants. Also, we could discuss the especialized plants and their distributions according to the criteria by the Ministry of Environment. The results of plant collection and their investigation from April in 2001 to November in 2001 are as follows : The vascular plants consist of total 565 taxa; 17 forms, 82 varieties, 466 species, 297 genera, 94 families,37 orders, 4 classes, 2 subphyla. In this area, there were a lot of useful economic plants such as 232 taxa(41%) of edible source, 222 taxa(39％) of forage source, 183 taxa(32%) of medicinal source, and 72 taxa(12%) of ornamental source, 15 taxa(2.6%) timber source, 7 taxa(1.2%) industrial raw material source respectively. Among them, the Korean endemic plants were 22 taxa(3.9％ among total 565 taxa); 1 forms, 2 varieties, 19 species, 22 genera, 16 families. And rare and endangered plants was 1 taxa; Astragatus membranaceus. Also, the naturalized plants were 19 taxa(3.4% among total 565 taxa and 10.4% among the total naturalized plants in Korea).

• Korean Journal of Plant Resources
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• v.28 no.4
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• pp.487-510
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• 2015

This study was carried out to inventory the vascular plant flora in Deokjeokdo and its adjacent regions (Mungapdo, Soyado), Ongjin-gun, South Korea, from April to October 2014. Based on the voucher specimens, vascular plants in this area consisted of 108 families, 362 genera, 578 species, 5 subspecies, 66 varieties and 4 forms, totally 653 taxa. In the flora of this area, 5 taxa of Korean endemic plants were found distributed in the sites, including Hepatica insularis Nakai and Asarum glabrata (C.S.Yook & J.G.Kim) B.U.Oh. Korean rare and endangered plants found in this area were 1 taxa of Critical Endangered Species (CR) and 5 taxa of Vulnerable Species (VU). The floristic regional indicator plants found in this area were 67 taxa comprising 3 taxa of grade V, 2 taxa of grade IV, 12 taxa of grade III, 3 taxa of grade II and 47 taxa of grade I. Naturalized plants consisted of 67 taxa, such as Chenopodium album L. and Erigeron annuus (L.) Pers. were recognized widely distributed in the area.

• The Korean Journal of Ecology
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• v.21 no.5_3
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• pp.633-648
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• 1998

The forest vegetation of Mt. Nam Nature Park was investigated according to the phytosociological method. The vegetation in this study area was classified into 5 communities Quercus mongolica (Acer pseudo-sieboldianum subcommunity, Prunus sargentii subcommunity), P. sargentii, Pinus densiflora (Q. mongolica subcommunity, Stephanandra incisa subcommunity) and 5 afforestations Robinia pseudo-acacia, Populus tomentoglandulosa, P. koraiensis, P. rigida, Metasequoia glyptostroboides. Generally, were P. densiflora forest at the Southern slope and Q. mongolica forest at Northern slope dominant species from the top zone standing in Namsan tower. The dominance sequences on each stratum determined by the R-NCD (Relative net Contribution Degree) showed Q. mongolica and P. densiflora in tree-1 layer, Styrax japonica and Corbus alnifolia in tree-2 layer, S. incisa, S. japonica and rhododendron schlipenbachii in shrub layer, and Oplismenus undulatifolius, Eupatorium rugosum, Parthenocissus tricuspidata and Disporum smilacinum in herb layer. The soil was analyzed to investigate the soil conditions and fertility. The pHs of soil collected in each sites appeared strongly acidic with the range of 4.34 to 5.01 each community and especially, was the lowest value 4.34 in P. rigida afforestation. And Q. mongolica-P. sargentii subcommunity was distributed at the area with relative mesic conditions and high organic matters. Nitrogen was highest at P. sargentii community, phosphate at P. densiflora-S. incisa subcommunity, calcium, potasium and magnesium of exchangeble cation at R. pseudo-acacia afforestation. Especially, the level of calcium in R. pseudo-acacia afforestation, P. koraiensis afforestation and P. densiflora community was shown the highest (0.38-1.48 mg/100g) compared to other communities, because of the influence of lime fertilization used to improve acidic soil.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.15 no.1
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• pp.89-105
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• 2012

This study is carried out to survey and analyse the vascular plants distributed around the Jusan Reservoir, Juwangsan national park. The results are as follows. The numbers of vascular plants were 377 taxa; 85 families, 253 genera, 332 species, 3 subspecies, 37 varieties and 5 forma. The endangered plants designated by Ministry of Environment were 2 taxa; Berchemia berchemiaefolia (Makino) Koidz. and Iris odaesanensis Y.N.Lee. The rare plants designated by Korea Forest Service were 6 taxa; Eranthis stellata Maxim., Aristolochia contorta Bunge, Aristolochia manshuriensis Kom., Berchemia berchemiaefolia (Makino) Koidz., Scopolia japonica Maxim. and Iris odaesanensis Y.N.Lee. The endemic plants were 4 taxa; Carpinus laxiflora (Siebold & Zucc.) Blume, Pseudostellaria coreana (Nakai) Ohwi, Philadelphus schrenkii Rupr. and Weigela subsessilis (Nakai) L.H.Bailey. The specific plants by floristic region were 38 taxa; Juglans mandshurica Maxim., Salix chaenomeloides Kimura, Hylomecon vernalis Maxim., Lonicera praeflorens Batalin, Erythronium japonicum (Baker) Decne., Potentilla dickinsii Franch. & Sav., Celtis aurantiaca Nakai, Anemone reflexa Steph. & Willd., Cimicifuga heracleifolia Kom. and so forth. The naturalized plants were 20 taxa; Fallopia dumetorum (L.) Holub, Chenopoidum album L., Lepidium apetalum Willd., Veronica persica Poir., Conyza canadensis (L.) Cronquist, Taraxacum officinale Weber and so forth.

• Korean Journal of Medicinal Crop Science
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• v.20 no.1
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• pp.20-26
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• 2012

This study compared the differences between the Dendranthema boreale and Dendranthema indicum in their habitat, soil adaptability, species composition and community structure in Korea. More D. boreale distributed than D. indicum to in the place where high elevation and on the surface of low degree slope. Both D. boreale and D. indicum growed well in south-east direction of the slope. The soil pH of D. boreale and D. indicum was 6.1 and 7.1, respectively. Ca, Mg, Na and organic matter content of the soil of D. boreale habitat was significantly lower than that of the D. indicum habitat. There were 102 and 88 taxa, in D. boreale and D. indicum habitat, respectively. Both species generally distributed along with herbs than along with trees. The important species found in D. boreale habitat were Artemisia princeps (57.1%) and Humulus japonicus (33.3%), and the D. indicum habitat were Miscanthus sinensis (42.9%) and Lonicera japonica (38.1%). The D. boreale group was classified into Artemisia princeps, Crepidiastrum denticulatum, Miscanthus sinensis, Humulus japonicus, Pueraria lobata, Lespedeza bicolor, Lonicera japonica and Rubus crataegifolius community. The D. indicum group was classified into Artemisia capillaris, Peucedanum japonicum, Boehmeria pannosa, Pinus thunbergii, Lonicera japonica, Quercus acutissima and Robinia pseudoacacia community. There is a large difference bewteen D. boreale and D. indicum in their habitat, soil adaptability, species composition and community structure.

• ALGAE
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• v.33 no.4
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• pp.291-304
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• 2018

Lyngbya C. Agardh ex Gomont is a nonheterocytous cyanobacterial genus whose evolutionary history is still poorly known. The traditionally defined Lyngbya has been demonstrated to be polyphyletic, including at least five distinct clades, some of which have been proposed as new genera. Intraspecific diversity is also clearly underestimated in Lyngbya due to the lack of unique morphological characters to differentiate species. In this study, we describe the new genus Capillus T. A. Caires, C. L. Sant'Anna et J. M. C. Nunes from benthic marine environments, including two new Brazilian species (here described as C. salinus T. A. Caires, C. L. Sant'Anna et J. M. C. Nunes, and C. tropicalis T. A. Caires, C. L. Sant'Anna et J. M. C. Nunes), and two species yet to be described, one of them from India (Capillus sp. 2.1), and the other from United States of America, based on strain PCC 7419. Capillus species presented cross-wise diagonal fragmentation, assisted or not by necridic cells, which has not been previously mentioned for Lyngbya. Ultrastructural analyses showed that C. salinus and C. tropicalis have numerous gas vesicles, which are rarely described for benthic marine species. The new genus formed a well-supported clade, and the D1-D1' and Box B secondary structures of internal transcribed spacer also supported the proposal of its new species. These findings help to clarify the diversity of species in the Lyngbya complex and the taxonomy of the group, and highlight the need of further floristic surveys in tropical coastal environments, which remain poorly studied.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• v.2 no.3
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• pp.153-165
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• 2021

The objective of this study was to provide basic data for the conservation of wetland ecosystems in the Civilian Control Zone and the management of Yongyangbo wetlands in South Korea. Yongyangbo wetlands have been designated as protected areas. A field survey was conducted across five sessions between April 2019 and August of 2019. A total of 248 taxa were identified during the survey, including 72 families, 163 genera, 230 species, 4 subspecies, and 14 varieties. Their life-forms were Th (therophytes) - R₅ (non-clonal form) - D₄ (clitochores) - e (erect form), with a disturbance index of 33.8%. Three taxa of rare plants were detected: Silene capitata Kom. and Polygonatum stenophyllum Maxim. known to be endangered species, and Aristolochia contorta Bunge, a least-concern species. S. capitata is a legally protected species designated as a Class II endangered species in South Korea. A total of 26 taxa of naturalized plants were observed, with a naturalization index of 10.5%. There was one endemic plant taxon (Salix koriyanagi Kimura ex Goerz). In terms of floristic target species, there was one taxon in class V, one taxon in Class IV, three taxa in Class III, five taxa in Class II, and seven taxa in Class I. Three invasive alien species (Ambrosia trifida L., Ambrosia artemisiifolia L., and Humulus japonicus Siebold & Zucc) were observed. For continuous conservation of Yongyangbo Wetlands, it is necessary to remove invasive alien plants and block the inflow of non-point pollutants.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.22 no.3
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• pp.31-54
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• 2019

The purpose of this study is to present the basic data for establishing the management plan of forest ecosystem in Honam-Jeongmeak and Geumnamhonam-Jeongmaek by surveying and analysing the vascular plants distributed in Jangansan(A-site), Palgongsan(B-site), Mandeoksan(C-site), Chuwolsan (D-site), Cheonunsan(E-site) and Jeamsan(F-site). The numbers of flora were 813 taxa including 115 families, 406 genera, 700 species, 4 subspecies, 94 varieties and 15 forms. There were 500 taxa in A-site, 427 taxa in B-site, 402 taxa in C-site, 449 taxa in D-site, 345 taxa in E-site and 524 taxa in F-site. The rare plants were 12 taxa including Paeonia japonica, Iris minutoaurea, Chloranthus fortunei and so forth. In IUCN Red List categories, there were 1 taxon of EN, 2 taxa of VU, 8 taxa of LC and 1 taxon of DD. The Korean endemic plants were 20 taxa including Salix koriyanagi, Thalictrum actaefolium var. brevistylum, Saussurea pseudogracilis and so forth. The specific plants by floristic region were 108 taxa including 58 taxa of grade I, 30 taxa of grade II, 16 taxa of grade III, 2 taxa of grade IV and grade V, respectively. The plants adaptable to climate change were 18 taxa including 11 taxa of southern plant and 7 taxa of northern plants. The naturalized plants were 49 taxa including Rumex nipponicus, Brassica juncea, Trifolium repens and so forth. The invasive alien plants were 4 taxa including Rumex acetocella, Solanum carolinense, Ambrosia artemisiifolia and Aster pilosus.

• Korean Journal of Plant Taxonomy
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• v.49 no.2
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• pp.179-197
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• 2019

This study presents the flora of vascular plants on Oenarodo Island, located in Goheung-gun, Jeollanam-do, Korea. A list of vascular plants was created based on the herbarium of the National Biological Resource Center (NIBR) and the Daejeon University Biology Department herbarium (TUT) collected from field surveys. Based on specimens collected in the field during 21 separate field trips amounting to a total of 21 days conducted between March of 2015 and October of 2017, there are 587 taxa on Oenarodo Island, consisting of 122 families, 364 genera, 538 species, six subspecies, 41 varieties, and two forms. Among the collected plants, those endangered were four taxa, those endemic were 14 taxa, floristic regional indicator plants specially designated by the Ministry of the Environment amounted to 137 taxa, and those naturalized amounted to 46 taxa.