• Journal of Environmental Science International
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• v.30 no.1
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• pp.29-43
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• 2021

This study analyzed the status of climate-change indicator plants native to the main islands of the Korean peninsula, while elucidating their distribution characteristics. Information on flora from over 129 island locations, comprising more than 100 species of native plants, was collected, compiled into a database, and utilized as raw data. The distribution of 193 climate-change indicator plants was confirmed. The distribution area of broadleaf evergreen trees and ferns, including Mallotus japonicus and Cyrtomium falcatum, was relatively wide. In contrast, the distribution of common northern plants such as Corydalis turtschaninovii and Malus baccata was limited. If global warming persists, northern plant distribution is expected to decrease rapidly in the Korean Peninsula island region, while the northern limit line of the southern plants is expected to migrate further northward. During this process, it is likely that the plant congregation structure and species diversity within the island region will change dynamically. In this study, comparative analyses between species and regions were conducted by assessing the relative frequency of their occurrence, and six types of botanical geographic distribution patterns were noted.

• Korean Journal of Plant Taxonomy
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• v.51 no.4
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• pp.386-390
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• 2021

Petrorhagia nanteuilii (Burnat) P. W. Ball & Heywood (Caryophyllaceae), native to western Europe and western North Africa and an introduced or alien plant in South America, Australia, and Japan, was newly found in Gyeongsangnam-do, Korea. Petrorhagia is clearly distinguished from other genera by a bract at the base of calyx, which differs from Gypsophila L., and commissures at the sepals, which is different from Dianthus L. Petrorhagia nanteuilii grows on slopes and roadsides, suggesting that it is likely to have been introduced through the installation of green sites and road construction. A precise description, illustration, photographs, and a key to related genera and species is provided.

• Journal of Environmental Impact Assessment
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• v.29 no.5
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• pp.307-322
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• 2020

This study was conducted to obtain information relevant to resolving problems related to artificially introduced plants in ecological restoration projects. We investigated artificially introduced plants and plants growing naturally from its surroundings in the active restoration sites of the Ecosystem Conservation Fund Return Project (ECFRP) of the Ministry of Environment and the Civilian Control Zone Forest Restoration Project (CCZFRP) of the Korea Forest Service. We also analyzed the characteristics of native, exotic, and cultivated plants in addition to their Raunkiaer's life forms. Furthermore, we compared the planted areas and inhabited areas, as well as the characteristics of the habitats of native plants among the planted plants. We found that among the plants planted in the ECFRP, 50.4% were native, 6.8% were exotic, and 42.9% were cultivated. Meanwhile, in the CCZFRP, 78.6% were native, 21.4% were exotic. We also noted that many native plants were found in the planted areas that were far from their habitats. In addition, we identified many native plants that were planted in areas judged to have characteristics different from that of their natural habitat. In the case of Raunkiaer's life forms, the planted plants showed high ratios of megaphanerophytes (MM) and microphanerophytes (N), while the invasive plants showed high ratios of therophytes (Th) and hemicryptophytes (H). When restoring the ecosystem, the ratio of planting native plants should be higher than that of exotic or cultivated plants. Moreover, the habitats and ecological characteristics should be considered when selecting native plants to enhance the effect of ecological restoration.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.2 no.4
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• pp.64-73
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• 1999

This study was conducted to find out the effects of hydroseeding material and seed mixture on the revegetation of rock cut-slopes by PEC4 (Polymer-Ecology-Control) Hydroseeding Measures. PEC4 hydroseeding material was applied to four cut-slopes using hydroseeding measures from April to August, 1999, and the field survey was carried out by monthly. PEC4 material consisted of bark compost and organic soil amendments. This material has high content of organic matter and high level of water holding capacity. PEC4 hydroseeding material shows low level of soil hardness, so it gives to good condition for seed germinating and plant growing in early stage. PEC4 material attached at rock cut-slopes by two types of adhesive agent was not eroded by rainfall. The plant coverage and number of plant species were affected by mixing ratio of seeds and seeding timing. From the viewpoint of plant establishment, the optimal hydroseeding timing of mixed seeds for plant growth seems to be in May. Most of the plant seeds were germinated well and they covered rock cut-slopes so quickly and effectively. Plant importance value of Silene armeria and Platycodon grandiflorum. were higher than any other seeded-native species in the competition between native species and exotic species, so they have enough possibility to be used for slope revegetation works. Thus it leads to conclusion that the revegetation method used in this experiment was a very effective method for plant establishment on rock cut-slopes.

• Korean Journal of Plant Resources
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• v.27 no.4
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• pp.333-336
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• 2014

Trifolium resupinatum L. (Fabaceae) is native in Southern Europe and Southwesten Asia. This species is known as a naturalized plant, which is widely distributed in the world. We first found it in the Eushincheon river bank of Jindo Isl., Jeollanam-do, South Korea. T. resupinatum can be easily distinguished from the other species of the same genus by its resupinate flower. The Korean name "Geo-kkul-kkot-to-kki-pul" indicates its distinctive characteristic of flower.

• Korean Journal of Plant Taxonomy
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• v.52 no.3
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• pp.196-200
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• 2022

Verbena bracteata Cav. ex Lag. & Rodr. (Verbenaceae), native to North America and an alien plant in China and Japan, was newly found in central and southern areas of Korea. This species can be distinguished from other Verbena taxa in Korea by having larger floral bracts and stems that are prostrate or procumbent to decumbent-ascending. Verbena bracteata grows in dry and sunny grasslands or along roadsides. A precise description, illustration, photographs, and a key to related taxa are provided.

• Journal of The Korean Society of Grassland and Forage Science
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• v.11 no.2
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• pp.102-107
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• 1991

This trial was carried out to investigate the effect of oversowing on the fodder value and the life form of standing crop in the low productive grassland with a western exposure at the Korean Native Cattle Improvement Center in Seosan. Chungnam Province. The results obtained are summarized as follows: 1. The inferior plant community of low productive grassland was improved to the most desirable pasture association by oversowing after herbicide application. At the experimental area most of the native grasses were not suitable for the pasture plant due to less fodder value(0-2). 2. The fodder value of standing crop in the improved grassland with 6.04(grasses: 4.72, legumes: 1.07 and herbs: 0.25) was much more increased by 108% than that of low productive grassland. 3. The life forms of plant community in the low productive grassland were composed of Hemicryptophytes of 36.29'0, Therophytes of 30.47~, Chamaephytes of 17.0% and Geophytes of 16.4%). But by oversowing after herbicide application their life forms of Hemicryptophytes increased greatly by 51.4%, on the other hand Therophytes, Chamaephytes and Geophytes were much more decreased by 25.4, 15.6 and 10.470, respectively.

• Korean journal of applied entomology
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• v.53 no.3
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• pp.317-319
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• 2014

The aloe vera aphid, Aloephagus myersi Essig, was collected on imported Aloe vera (L.) Burm.f. (Xanthorrhoeaceae) grown in greenhouses in Korea. This species is native to tropical Africa and probably was introduced into greenhouses via the aloe plant trade. This introduction reinforces the need to focus attention on the eradication from collected localities, and for constant surveillance and detection at ports of entry to prevent introduction and establishment of new pests in the Korean environment. In this paper, additional information for the aloe vera aphid is provided with diagnoses and photographs along with host plant and distribution data for accurate species identification.

• Korean Journal of Plant Resources
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• v.22 no.1
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• pp.96-101
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• 2009

Dokdo was formed since when four million six hundred thousand to two million five hundred thousand. Dokdo, Ulreung Island and the mainland in Korea are not touch each other since the formation, therefore, Dokdo are very important island for discussion of plant evolution from plant geography point of view. Plants of Dokdo was enlisted as 60 taxa, 27 families, 52 genera, 50 species and 10 varieties. The naturalized plants of a wide sense is composed of 25 taxa, two tree species as Lonicera morrowii and Elaeagnus macrophylla, and 23 herbs. The naturalized plants were identified of 5 species as Sonchus oleraceus, Brassica juncea var. integrifolia, Rumex crispus, Chenopodium album, and Bromus unioloides. Total naturalized plants are 32 taxa, ratio of total naturalized plants per a existing species was 60 percentage. Accordingly Vegetational environment of Dokdo was interpreted very incomplete state as well as severe ecological disturb by invade species. Preparation of a regulating plan on naturalized plants and concern of a policy decision are requested in the conservational dimension for native species in Dongdo. For the conservation of native species in Dokdo, there are prepared that a regulating plan as block of the influx and eradication etc. and a policy decision of naturalized plants are prepared for view of the conservation for native species in Dokdo.

• Korean Journal of Medicinal Crop Science
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• v.6 no.2
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• pp.154-159
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• 1998

This experiment was conducted to investigate the effects of plant age on germination and distribution of seed specific gravity and to find a reason of low germination rate in seeds harvested from young plants, which could be valuable information for the improvement of seed germination in Bupleurum falcatum L. The germination rates of Korean native cultivar were 35% and 4% higher in 1-year-and 2-year-old plants, respectively, than Misshimasaiko (三鳥柴胡) and showed no significant difference between 1- and 2-year-old plants. However, in Misshimasaiko, seed germination rates of 1-year-old plants were $22.7{\sim}23.0%$ lower than those of $2{\sim}3-year-old$ plants. The relative frequency of seeds over 1.00 specific gravity in Misshimasaiko was $33{\sim}34%$ higher in $2{\sim}3-year-old$ plants compared to 52% of 1-year-old plant, but no difference was found between plant ages in Korean native cultivar. Considering varietal difference, the germination rate of seeds with the same specific gravity was not affected by plant age in Korean native cultivar, but in Misshimasaiko it was greatly different between 1-year-old $(5.0{\sim}17.5%)$ and $2{\sim}3-year-old$ plants $(22.5{\sim}55.0)%$. From these results, it was assumed that differences in germination rate among seeds from different plant ages were caused not only by seed specific gravity but also by some other factors.