• Proceedings of the Plant Resources Society of Korea Conference
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• 2000.05a
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• pp.1-10
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• 2000

• Korean Journal of Plant Resources
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• v.7 no.1
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• pp.53-61
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• 1994

This study was carried out in Mt. Backdu which is located at the borderland between Korea and China, to offer the information and help the people who in order to study and utilize the northernresource plants in future. Actually, the exploration and investigation were executed only in china sideof Mt. Backdu and its outskirts.Totally, 100 families, 281 genus and 703 species were investigated. They were classified into 26 spe-cies of pteridophyta, 14 species of gymnospermae, 101 species of monocotyledons and 562 species of di-cotyledons by general taxonomic classification, and 594 medicinal plants(84.5% ), 296 ornamentalplants(38.3% ), 161 edible plants(22.9% ), 92 industrial plants, 67 honey plants and 17 forage plantsby use.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2001.04a
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• pp.38-40
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• 2001

• Proceedings of the Plant Resources Society of Korea Conference
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• 2001.04a
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• pp.41-42
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• 2001

• The Korean Journal of Ecology
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• v.7 no.3
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• pp.132-157
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• 1983

This study was performed to investigated the flora and vegetation of Kokum-do island from July 1982 thru December 1983; and the findings hereof are summarized as follows: The flora investigated thereform comprises 737 species whih are classified into 128 families, 466 genera, 651 species, 79 varieties and 7 formae; and those which are worthy of close attention among the same include such endemic species of Korea as Celtis choseniana, Corylopsis coreana, Carpinus tschonoskii var. eximia and Tricyrtis dilatata, and a few plants, to be distributed in the north, such as Lilium distichum, Girardinia cuspidata and Orostachys sikokianus. Now that the said island belongs to the warm temperate zone, the distribution thereof consists of 120 species of evergreen plants including 74 species of evergreen broadleaf trees. The rich distribution of evergreen broadleaf trees in the island is thanks to the plantation thereof by the public organizations for scenic beauty. The destruction of flora in this island was caused by felling, fire nization and other human activities around 1940, and in particular, has been correlated with the population densiity of Yonhong-do, Sanghwa-do, and Hahwado islets; and that of top soil and ground vegetation in he quarry area of Ojon-ri town resulted from the collection of natural rocks an stones. It is evaluated as necessary that such evergreen broadleaf trees as Castanopsis cuspidata var. thunbergii, Machillus thunbergii and Ligustrum japonicum of Hyongje-do. Chun-do, Tok-do, Taech'wi-do, and Soch'wi-do islets, andPhyllostachys bambusoides, Caesalpinia japonica and Albizzia julibirssin of Kokum-do island, and Machillus thunbergii of Hongryon-ri town be under protection. The average DGN of the whole archipelago proves to be 5.84, which shows the tendency of the inverse proportion to the number of resident population per unit area. The pteridophyta distributed in this island comprises 39 species, and the coefficient of cryptogam as to the destruction of vegetation shows a high value of 1.4 which is regarded as indicating the diversified distribution of pteridophyta, forestbed shade plants under the forestbeds of some wellpreserved lots of this island. The naturalized plants, distributed in this island, were found out comprising a total of 23 species, and the Urbanization Index(UI) as to the destruction degree of natural vegetatioin shows a low value of 20.9.

• Journal of Environmental Impact Assessment
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• v.21 no.4
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• pp.509-523
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• 2012

This basic study is to present the methods and raw data for carrying out to objectively assess an ecosystem by developing the plant ecological indices. The results are as follows. The plant ecological indices were 7 units including RI (Rare Index), EI (Endemic Index), SI (Specific Index), NI (Naturalized Index), UI (Urbanized Index), Pte-Q (Pteridophyta Index) and HI (Halophytes Index). The vascular plants in Mt. Waryong, Mt. Bongmyeong and Bito island were summarized as 471 taxa including 104 families, 294 genera, 419 species, 3 subspecies, 41 varieties and 8 forms. We surveyed 5 taxa of rare plants, 7 taxa of endemic plants, 38 taxa of specific plants by floristic region, 40 taxa of naturalized plants, 1 taxa of invasive alien plant, 19 taxa of pteridophyta and 14 taxa of halophytes. Bito island had the highest RI was 1.2%. Mt. Bongmyeong was 1.4% higher than other sites. If the SI of 2.9% was the highest in Bito island. Bito island was the highest NI, and the UI was the hightest in Mt. Waryong. Mt. Bongmyeong was the lowest NI and UI. In Mt. Waryong and Bito island, the highest DI was 9.1%. The Pte-Q of Mt. Waryong was 1.3 higher than the other sites. Bito island, the highest HI was 8.1%. Overall, 1.5% of RI, 1.9% of EI, 2.3% of SI, 8.5% of NI, 14.3% of UI, 9.1% of DI, 1.0 of Pte-Q and 3.0% were analyzed with HI.

• Korean Journal of Plant Resources
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• v.25 no.4
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• pp.433-446
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• 2012

The preliminary study for providing the relationship of the factors which are climate and the pteridophyta was carried out. Dormancy form and leaf phenology of the 321 taxa belonging to 27 families were analyzed. This survey shows life-form spectrum of Korean ferns. The results obtained from this study were as follows: Deciduous (d), Evergreen (e) and Summer-deciduous (sd) were calculated as 37.4%, 59.2%, 1.9%, respectively and the Evergreen (e) has the highest value compared to the other leaf phenologies. It observed from the life-form spectra that Hemicryptophytes (H) was the most common dormancy form at 42.1%. Geophytes (G), Epiphytes (E) and Chamaephytes (Ch) were calculated at 25.5%, 15.9%, and 11.8%, respectively. There will be a discussion about geographical distribution of Korean ferns and possibility of their distribution range.

• Korean Journal of Plant Resources
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• v.32 no.5
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• pp.559-564
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• 2019

Cyrtomium yamamotoi Tagawa is an unrecorded species of perennial Pteridophyta that belongs to the genus Cyrtomium of Dryopteriaceae. It is known as native to Taiwan, China and Japan, but we found it in Jeju-si, Jeju-do and Haenam-gun, Jeollanam-do, Republic of Korea in 2018. This species is very similar to C. fortunei J.Sm. having characters such as 1 pinnate compound leaves, globular indusium, but distinguished from the latter by its lanceolate or lanceolate-ovate shaped lateral pinnates of less than 12 pairs, bicolor indusium with dark brown or blackish in center, and margin incised teeth. Here, we provide its description, photographs and a key of related taxa in Korea.

• Korean Journal of Plant Resources
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• v.19 no.5
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• pp.592-597
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• 2006

To understand the status of ferns' distribution of Gwangneung forest, flora survey was done during the period of April 2003 to November 2005. The results obtained from this study were as follows: Ferns identified and surveyed were 46 taxa including 9 families 17 genera 43 species 3 varieties were recorded in Gwangneung Forest. Hemicryrtophyte (H) was the most common dormancy from recorded in surveyed area. Epiphyte (E) and Hydatophyte (HH) were calculated as 4.3%, 2.2%, respectively and they were the lower value compared to those of other dormancy form. Consequently, $H-R_{3}-D_{1}-t$ was recorded as the most common life-form of ferns in Gwangneung Forest. Pteridophyta-Quotient (Ptph.-Q.) was calculated as 1.28 and it was the higher value compared to those of other neighboring mountains.

• Journal of Korean Society of Forest Science
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• v.85 no.1
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• pp.44-55
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• 1996

This study was first performed since 1933 to investigate the flora of $\check{O}$ch$\check{o}$ng Island located in the middle part of Yellow Sea. A number of vascular plants recognized through in this survey were 319 taxa belonging to 78 families, 213 genera, 279 species, 38 varieties and 2 forma in which 38 species were newly recorded and 26 species of evergreen plant were identified. The Pteridophyta distributed in this island were 10 species and the naturalized plants were 4 species. And the coefficient of cryptogram(Pte-Q) and Urbanization Index(UI) as to the destruction degree of natural vegetation showed a value of 0.81, 3.64 respectively. Some noticeable species were Kadsura japonica, Castanopsis cuspidate var. thunbergii, Dendropanax morbifera, and Ficus stipulate and $\check{O}$ch$\check{o}$ng Island was considered as the northern limit of distribution of these species.