• Journal of Ecology and Environment
• /
• v.42 no.1
• /
• pp.30-42
• /
• 2018

Background: The southern and eastern parts of the Gobi Desert area are a unique dry ecosystem with a diverse regional desert, semi-desert, and mountain dry steppe flora. This area habitat is located at the overlap of different floristic regions; on its northeast side, Central Asian desert flora is dominating, and on the eastern side, East Asian flora is observed. The comprehensive survey was carried out to find the floral diversity of the medicinal plants on the region. Methods: All recorded species in this study were based on the collected voucher specimens between June and August in the year 2017. Results: We recorded 23 families, 57 genera, and 78 species of vascular plants. The families Asteraceae (15 species), Fabaceae (10 species), and Amaranthaceae (10 species) were represented most in the study area, while Caragana (5 species), Salsola (4 species), and Arnebia (3 species) were the most common genera found. Conclusion: Conservation status for remarkable species was also reviewed based on the literature. Around the study area, 24 species as "sub-endemic," 10 species as "very rare," 4 species as "rare," 1 species as "alien," 13 species as "relict," 10 species as "Red Book," 2 species as "endangered (EN)," 3 species as "vulnerable (VU)," 3 species as "near threatened (NT)," and 2 species as "least concern (LC)" plants are growing.

• Korean Journal of Environment and Ecology
• /
• v.11 no.4
• /
• pp.407-414
• /
• 1998

The rare and endangered plants in Naesorak area were investigated for four months during May to August in 1997, and the results were summarized as 35 taxa which is classified as 19 families, 32 species, and 3 varieties. At the level of families, 19 families such as Pinaceae(1 species), Taxaceae(1 species), Cupressaceae(1 species and 1 variety), Liliaceae(5 species and 1 variety), Aristolochiaceae(2 species), Ranunculaceae(4 species), Berberidaceae(1 species), Saxifragaceae(2 species), Rosaceae(1 species), Oleaceae(2 species and 1 variety), Solanaceae(1 species), Scrophulariaceae(1 species), Valerianaceae(1 species), Campanulaceae(1species), and Compositae(1 species) were recorded. The most of the habitats of the species was easily found along the major mountain trails, and a kind of destructions of these plants by human interferences is due to the fact that the illegal collections for food and medicine are occurred. Those species of Taxus caespitosa, Rhododendron aureum, Vaccinium bracteatum, Allium victoralis var. platyphullum and Leontice microryncha has a few individuals in habitats and also shows the unfavorable growing state, so the intensive and continuous habitat management of the habitats were inevitably dimanded.

• Journal of Korean Society of Forest Science
• /
• v.99 no.4
• /
• pp.568-572
• /
• 2010

In order to develop an efficient micropropagation system for a rare tree species, Empetrum nigrum var. japonicum K. Koch, the effect of medium salt, cytokinins and auxin at different concentration were evaluated. Shoot induction from axillary bud was better on WPM medium than on MS medium. Although there was no significant differences observed in shoot induction among the salt strengths of WPM medium, whereas healthy shoots were developed on basal WPM medium. In comparison of the cytokinins affecting shoot proliferation, zeatin was better than BA, whereas BA exhibited more effectiveness on shoot elongation. In vitro root formation was better on WPM medium than on 1/2MS medium and achieved the highest rooting rate when 5.0 mg/L IBA treatment. 93% of rooted plantlets were survived on artificial soil mixture after 4 weeks of acclimatization. Above results suggest that a rare tree species, E. nigrum var. japonicum can be micropropagated via axillary bud cultures.

• Advances in nano research
• /
• v.14 no.4
• /
• pp.313-327
• /
• 2023

Zinc metal organic framework (MOF_Zn)-loaded goad nanoparticles (AuNPs) sol (Au@MOF_Zn), which was characterized by TEM, Mapping, FTIR, XRD, and molecular spectrum, was prepared conveniently by solvothermal method. The results indicated that Au@MOF_Zn had a very strong catalytic effect with the nanoreaction of AuNPs formation between sodium oxalate (SO) and HAuCl4. AuNPs in the new indicator reaction had a strong resonance Rayleigh scattering (RRS) signal at 370 nm. The indicator AuNPs generated by this reaction, which had the most intense surface enhanced Raman scattering (SERS) peak at 1621 cm -1. The new SERS/RRS indicator reaction in combination with specific aptamer (Apt) to fabricate a sensitive and selective Au@MOF_Zn catalytic amplification-aptamer SERS/RRS assay platform for carbendazim (CBZ), with SERS/RRS linear range of 0.025-0.5 ng/mL. The detection limit was 0.02 ng/mL. Similarly, this assay platform has been also utilized to detect oxytetracycline (OTC) and profenofos (PF).

• Journal of Forest and Environmental Science
• /
• v.32 no.2
• /
• pp.129-139
• /
• 2016

Study was conducted to investigate tree diversity and its population and regeneration status in homegardens of upper Assam, Northeast India through field study by quadrat method. A total of 154 tree species have been recorded from 135 studied homegardens under 109 genera 53 families. Most of these species (79%) are indigenous to our country, while the rest (21%) arealiens (naturalized and cultivated exotics) by origin. Tree species richness per homegarden varies greatly in different homegardens and is ranged from 5 to 52 tree species with a mean of 22 ($SE{\pm}0.58$). A. malaccensis is the most dominant tree species in the studied homegardens contributed 34% of the total tree density of the documented trees. The tree density is much higher with 4,259 individuals $ha^{-1}$ but, basal area ($36.32m^2ha^{-1}$) is very less. Based on the number of individuals present, very rare species is accounted for 10%, rare species 39%, common species 19%, dominants 14% and predominant species 18% in the present study. The population density of 154 tree species is 4,259 (individuals $ha^{-1}$) for adults (>3.18 cm DBH), 5,902 (individuals $ha^{-1}$) for saplings and 38,164 (individuals $ha^{-1}$) for seedlings. The density of seedlings>saplings>adults represents good regeneration status of tree species in studied homegardens. The population structure study showed that about 8% tree species have good regeneration status, 9% have fair regeneration status, 48% have poor regeneration status and 34% tree species have no regeneration. Study suggests that research and development action is needed to stimulate regeneration of those tree species which having high importance value indices but showing poor or no regeneration. Based on present observation, it can be conclude that homegarden can emerge as an effective means for both economic well-being and biodiversity conservation in upper Assam, Northeast India.

• Korean Journal of Environment and Ecology
• /
• v.12 no.3
• /
• pp.191-211
• /
• 1998

The flora of the Kayasan National Park was surveyed from March to September, 1997. This area has very rich and diverse vascular plants; 613 taxa with 102 families, 323 genera, 522 species, 1 subspecies, 83 varieties, 5 forms and 2 hybrids. The rare and endangered plants species such as Lilium cernum Kom., Thymus quiquecostatus Celak., Cypripedium macranthum Sw., Tricyrtis dilatata Nakai, Abies koreana Wils., etc. were recorded. The plant species of 100 taxa such as Typha orientalis Presl, Corydalis maculata B. Oh et Y. Kim, Ajuga spectabilis Nakai, etc. were recorded for the first time in the area. The introduced plant species were found along the traffic road sides. The plant species of 14 taxa such as Lilium cernum Kom., Thymus quiquecostatus Celak., Abies koreana Wils., etc. which categorized as rare and endangered plants by the Office of Forestry were also recorded in the area(This species were mainly distributed in the habitats where easily threatened by human's activities).

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.14 no.4
• /
• pp.25-40
• /
• 2011

The vascular plants in Jeokjabong, Bogil Island were listed 350 taxa composed of 89 families, 233 genera, 309 species, 1 subspecies, 36 varieties and 4 forms. Divided into woody plants were 142 taxa (40.6%) and herbaceous plants were 208 taxa (59.4%). Based on the list of rare and endangered species by Korea Forest Service and Korea National Arboretum, 3 taxa were recorded; Celtis choseniana, Asarum maculatum, Rubus sorbifolius, and endemic plants, 10 taxa were recorded; Asarum maculatum, Cephalotaxus koreana, Carpinus coreana, Celtis choseniana, Lespedeza maritima, Indigofera koreana, Dendropanax morbifera, Ligustrum quihoui var. latifolium, Weigela subsessilis, Carex okamotoi, and plant species subject to permission for taking abroad, 4 taxa were recorded; Celtis choseniana, Asarum maculatum, Vaccinium oldhami, Carex okamotoi. Based on the list of floristic regional indicator plants by Korean Ministry of Environment were total 64 taxa (18.3% of all 350 taxa of vascular plants); Ligustrum quihoui var. latifolium in class IV, 19 taxa (Stauntonia hexaphylla, Cinnamomum japonicum, Zanthoxylum ailanthoides, Daphniphyllum macropodum, Centella asiatica, Verbena officinalis, Mitchella undulata, etc.) in class III, 5 taxa (Potentilla dickinsii, Ostericum melanotilingia, Sanicula rubriflora, Caryopteris incana, Teucrium veronicoides) in class II and 39 taxa (Gleichenia dichotoma, Cyrtomium fortunei, Aphananthe aspera, Rubus hirsutus, Meliosma myriantha, Hedera rhombea, Ainsliaea apiculata, etc.) in class I. Based on the list of naturalized plants, 5 families, 17 genera, 20 taxa (Phytolacca americana, Lepidium virginicum, Robinia pseudo-acacia, Verbesina alternifolia, Lolium perenne, etc.) and naturalization rate was 5.7% of all 350 taxa of vascular plants. Hereafter natural ecosystem into disturbance on naturalized plants and legal protection species and rare and endangered species distribute in the Bogil Island, precision investigation after management counterplan of the monitoring a point of view be required.

• The Korean Journal of Ecology
• /
• v.27 no.3
• /
• pp.141-146
• /
• 2004

This paper reports on Pb and Cd concentrations in the tissues of 76 individuals of 16 rare bird species found dead across Korea. In most of species, Pb concentration was higher in kidney and bone than in liver. The range of the mean liver Pb was 0.47 (Cygnus cygnus)∼3.74 ㎍/wet g (Asio flammeus). Based on hepatic Pb concentrations, 39 (51.3%) of the 76 individuals were classifed as background level (〈2㎍/wet g), 35 (46.1%) were elevated level (〉2㎍/wet g) and 2 (2.6%) were poisoned level (〉10㎍/wet g). These results were indicated many rare birds were suffered from chronic Pb exposure. Cd concentration was generally higher in kidney than in liver and bone. The range of the mean kidney Cd was 0.06 (Bubo bubo)∼l.75㎍/wet g (falco subbuteo). Only one of the 76 individuals had elevated Cd concentration (〉2.7㎍/wet g) in kidney. These results indicated most of rare birds had low Cd accumulations.

• Korean Journal of Plant Resources
• /
• v.19 no.2
• /
• pp.209-217
• /
• 2006

This study was carried out to investigate and analyze the vascular flora and injury status in Shinduri coastal dune area $(N36^{\circ}\;49',\;E126^{\circ}\;11')$, where designated as Natural Monuments and the result are as follows. The vascular plants identified and surveyed were 125 taxa including 108 species, 14 varieties, 2 forms and 1 hybrid of 92 genera of 40 families and there are 20 taxa including 17 species, 2 varieties and 1 hybrid of 15 genera of 10 families for woody plants, while 105 toxa including 91 species, 12 varieties and 2 forms of 78 genera of 34 families for the herbaceous plants at the . study sites. Seventeen taxa including 17 species of 15 genera of 9 families were investigated for naturalized plants and ratio of naturalization was 13.6 percents at the study sites. Glehnia littorolis Fr. Schm. and Lilium callosum S. et Z. appeared as rare and endangered plants designated in Korea Forest Service. Nine taxa in degree 1, 2 taxa in degree 2, 4 taxa in degree 3, 2 taxa in degree 4 and 2 taxa in degree 5 were represented for especialized species.

• Korean Journal of Plant Resources
• /
• v.22 no.2
• /
• pp.180-194
• /
• 2009

588 taxa of vascular plants including 121 families, 399 genera, 510 species, 67 varieties, 2 subspecies, 7 forma, and 2 hybrid species were investigated in Mt. Cheonsung. Among them, 116 species were newly added in this research. The area for Gyeongbu High-speed Railway passes Mujechi 3, 4, 5, and 6 and Daeseongsa around the wetlands were investigated 6 species of rare and endangered plants, 9 species of endemic plants and 37 species of special flora plants in Mt. Cheonsung. Appear due to the construction of the Gyeongbu High-speed Railway vegetation changes, especially about the impact of wetland plants for long-term monitoring is expected to need. Moreover, plant preservation plan about water source change in upper wetland should be established.