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게시판 (13,048)
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Post-2020 국가 보호지역 시스템 관리를 위한 기타 효과적인 지역 기반 보전 수단(OECMs) 후보지역 유형 검토
2022-12-23
Abstract: This study aims to systematically review the candidate types for OECMs suitable for domestic conditions in areas related to the Korea Forest Service in order to achieve the goal of establishing the protected areas and OECMs system required by Post-2020 GBF, and to provide basic data for the establishment of the national protected areas system. As a result of the study, the selection criteria for OECMs were presented, and it was found that arboretums·botanical gardens, Natural Recreation Forests, and air holes may correspond to the Candidate Types for OECMs. As a result of evaluating the possible areas for OECMs based on the OECMs selection criteria, in the case of arboretums·botanical gardens, it is judged that only conservation areas can be designated as OECMs, except for areas mainly used by visitors of arboretums·botanical gardens that fall under the BGCI conservation type among national and public arboretums·botanical gardens. However, private and school arboretums·botanical gardens have personal property ownership, so it was judged to have no effective measures to control activities that may adversely affect biodiversity, which showed limitations in designation of OECMs. Natural Recreation Forests was found to meet the OECMs selection criteria. However, private forests have personal property ownership, which limits the designation of OECMs. Therefore, it is necessary to strengthen the function of in-situ conservation in order to meet the OECMs for private and school arboretums·botanical gardens, and private forests that have personal property ownership. To this end, effective measures are needed to achieve biodiversity conservation outcomes, and it is judged that legal control and corresponding support policies (incentives) are needed. In the case of air holes, for sustainable conservation, the management boundary of air holes should be clearly defined based on the preparation of laws and guidelines related to air holes. In addition, it is judged that it is desirable to designate the competent local forest office as the management authority and conduct periodic detailed surveys of air holes, establish and implement the conservation plans based on those.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Brief Pollination Assessment of a Critically Endangered Food-Deceptive Orchid
2022-12-23
Abstract: The translocation of orchids (Orchidaceae) cannot be successful if one is unaware of their effective pollinators and plant–pollinator interactions. Cypripedium guttatum is a generalized fooddeceptive orchid, which is highly threatened in the Republic of Korea, thus, requiring immediate translocation actions. Although effective pollinators of the orchid are well known in China, little is known about the pollinators in the Republic of Korea and the ecological context in which the orchid can be successfully pollinated. To briefly assess the pollination of C. guttatum prior to translocation, we conducted a one-month survey of general pollination and the community-wide plant–pollinator network properties. Over 21 h of observation, we found that an effective pollinator of the orchid was the sweat bee Lasioglossum virideglaucum. The network was significantly specialized and modular, but not significantly nested. L. virideglaucum (pollinator) and Arabis gemmifera (plant) were determined to be keystone species, based on network metrics. A total of six network modules were identified and the flower colors of the plant species belonging to the C. guttatum module were purple, white, and yellow. After comparing the daily network patterns, we found that pollination of the orchid was accomplished when various flowering plant species bloom, and the nestedness value was high. This study revealed that high plant and pollinator richness could increase the chance that the deceptive orchid would be pollinated. Our study suggests that the network properties of this food-deceptive orchid community could provide useful insight into understanding the ecologically suitable habitat for the translocation of the highly threatened orchid species C. guttatum.
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Comparison of the seed dormancy and germination characteristics of six Clematis species from South Korea
2024-05-31
Abstract : Clematis species are perennial woody or herbaceous vines that are popular medicinal and ornamental horticultural plants. The seeds of six species were collected from five sites, and their germination characteristics and dormancy types were investigated. Seeds of all species had a typical achene morphology of a seed pod with a tail. Small, rudimentary embryos (0.14 to 0.29 E:S ratio) were observed, and the seeds showed sufficiently good water absorption (53.9–72.4%). Germination occurred within 30 days for C. apiifolia (light and dark conditions, 66.3% and 90.5%, respectively), C. heracleifolia var. urticifolia (77.0 and 92.5%), C. heracleifolia (37.3 and 88.3%), and C. serratifolia (1.0 and 96.5%). Germination was promoted using gibberellin treatments. Furthermore, the seeds of C. terniflora and C. trichotoma broke dormancy with short-term cold temperature stratification, and the embryos developed and germinated at warm temperatures. We concluded that the seeds of C. apiifolia, C. heracleifolia var. urticifolia, C. heracleifolia, and C. serratifolia are morphologically dormant whereas those of C. terniflora and C. trichotoma are morphophysiologically dormant. This study provides seed propagation and dormancy information for six Clematis species native to Korea.
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Monitoring the phenology of Forsythia velutina, an endemic plant of Korea
2021-12-28
Background and objective: This study was conducted on Forsythia velutina, a special plant, in Gyeongsangnam-do Arboretum under the Gyeongsangnam-do Forest Environment Research Institute, which is located in the southern part of Korea. Methods: The research aimed to analyze the flowering characteristics of the plant by calculating the optimal temperature and humidity according to the flowering time and flowering period for 8 years from 2010 to 2017 in order to provide basic data for bioclimate studies of endemic plants. Results: It was observed that the Forsythia velutina showed a life cycle from mid-March and to mid-November. Average growth period was 243 (± 6.5) days. In testing the reliability of a single variable according to the meteorological factors, the Cronbach's Alpha was 0.701, which indicates that the findings were relatively reliable. The average date of flowering was March 16 (SD = 5.8) and the average date on which blossoms fall was March 29 (SD = 5.2). A substantial difference in flowering period was observed from year to year 11 to 23 days, with an average of 16 days (± 4.7). The temperature and humidity in February to March, which affect the flowering, were 2.9-5.5℃, and 66.5-73.0%, respectively, and showed differences every year. Conclusion: The correlation between flowering time and meteorological factors was positive, and the highest daily temperature and average daily temperature had the highest significance. When establishing basic data on plant species for the conservation of endemic plants, the changes in life cycle events and weather conditions are identified. It is believed that it will be helpful in establishing a conservation strategy for the plant species in the future.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Cellulase 생산균주 단리 및 Bacillus subtilis PFB-1 유래 cellulase 특성 규명
2020-05-26
Abstract Six different kinds of strain were isolated from environmental soils in Kyeongsans-si, Kyeonbuk, Korea as cellulolytic microorganism due to their ability of enzyme activity for carboxymethylcellulose (CM-cellulose). Based on the analysis of 16s rRNA gene, they are identified with 3 kinds of Bacillus subtilis, 2 kind of Bacillus sp. and one kind of Bacillus amyloliquefaciens. Among these strains, one strain was selected from its high cellulase activity and named Bacillus subtilis PFB-1 because of 99% of identity with Bacillus subtilis ZFJ-8 (GenBank EU931563). B. subtilis PFB-1 showed the maximum cellulase activity after 24 h cultivation and the cellulase from B. subtilis PFB-1 exhibited the highest cellulase activities at the conditions of pH 5.0 and 50°C, for CM-cellulose. The cellulase from B. subtilis PFB-1 was stable at pH 4.0~6.0 range and until 40°C for 30 min perfectly. In the substrate specificity of the cellulase from B. subtilis PFB-1 for the various cellulosic substrates, the enzyme had the highest activity for CM-cellulose. In the hydrolysis of CM-cellulose by cellulase from B. subtilis PFB-1, the optimum conditions for substrate concentration and enzyme activity were investigated 1.5% and 3.0 U/ml, respectively.
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LED 광질이 차나무 기내배양묘의 생육 및 광합성에 미치는 영향
2019-12-27
초록 차나무의 기내배양 과정 중 증식배양 단계에서 LED 광질 조건에 따른 기내배양묘의 생육 특성과 광합성에 미치는 영향을 조사하였다. 광질은 적색광(R), 청색광(B), 혼합광(R+B+W)을 사용하여 처리하였고, 형광등(F)을 대조구로 하였다. 초장 생육은 적색광에서 가장 좋았으며, 특히 뿌리 생육에 있어서 혼합광은 길이와 표면적 증대에 효과적인 것으로 나타났다. 또한 T/R율, 엽록소 함량은 혼합광 처리에서 증가하는 것으로 나타났다. 엽록소 형광반응 이미지 촬영 결과 모든 처리구에서 광질에 따른 F v /F m 의값은 현저한 차이가 없었다. 그러나 배양묘의 NPQ는 청색광 처리에서 가장 많이 증가하여, 다른 광질과 유의적인 차이를 보였으며, 광합성 효율을 억제시키는 것으로 나타났다. 이상의 결과로 차나무 기내 배양은 배양목적에 따라 광질을 선택하는 것은 매우 중요하며, 차나무 기내배양 시 건실한 식물 생산을 위해서는 혼합광 처리가 유리할 것으로 판단된다. 본 연구결과는 차나무 대량증식 및 우량묘 생산 등에 기초자료로 활용할 수 있을 것으로 판단된다.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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광, 수분, 토성 그리고 유기물 처리에 따른 떡갈나무 유식물의 생육 반응과 생태적 지위
2020-05-26
ABSTRACT This study is to analyze the growth response of the Quercus dentata seedlings to four environmental factors and measure the ecological niche breadth. Environmental factors were light, moisture content, soil texture, and organic matter, treated with four gradients. The more quantity light increased, the heavier the leaves biomass, aboveground biomass, belowground biomass and plant biomass was. In treatment of water content and soil texture, growth response was no difference. The more organic matter increased, the heavier aboveground biomass was, but the remaining trait of plant was no difference. The ecological niche breadth was 0.865 in light, 0.995 in moisture content, 0.994 in soil texture and 0.988 in nutrient. Ecological niche breadth was the widest in the moisture content treatment and the narrowest in the light treatment. This means that the growth of Q. dentata seedlings grows well as the amount of light increases, and is sensitive to light, Thus, it is determined a growth and ecological niche breadth by light factors.
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RE: 죽백나무 상태 문의
2025-05-28
HOME > 마이페이지 > 활동내역 > 반려식물 Q&A 제출내역
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Diversity of vascular plants native the Ulleungdo and Kokdo Islands in Korea
2021-05-11
ABSTRACT The native vascular plants on Ulleungdo and Dokdo islands in Korea were investigated with the objective of determining conservation priorities and establishing a sustainable strategy for conservation of the plant species diversity. A total of 2,058 voucher specimens collected were identified and listed the diversity of plant species of each island. And the species composition, life forms, and rare and endemic species were characterized with respect to the plant species list. The vascular plants native to Ulleungdo island were surveyed 494 taxa in total comprising 102 families, 306 genera, 427 species, 6 subspecies, 57 varieties, 5 forma, and 1 hybrid. Among these, the distribution of 30 taxa was newly identified. On Dokdo island, 58 taxa were recorded comprising 28 families, 49 genera, 47 species, 1 subspecies, 6 varieties, and 1 hybrid. The 496 and 58 taxa of vascular plants native to Ulleungdo and Dokdo islands were classified based on the genera of vascular of Korea (F.K.E.C. 2007), respectively. We provide details on those endangered plants characterized by small population sizes and numbers, and discuss measures for the conservation of plant species diversity on Ulleungdo and Dokdo island, with respect to these endangered plants in particular and to the native plants in general.
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Phosphate sugar isomerases and their potential for rare sugar bioconversion
2021-05-11
Abstract Phosphate sugar isomerases, catalyzing the isomerization between ketopentose/ketohexose phosphate and aldopentose/ aldohexose phosphate, play an important role in microbial sugar metabolism. They are present in a wide range of microorganisms. They have attracted increasing research interest because of their broad substrate specificity and great potential in the enzymatic production of various rare sugars. Here, the enzymatic properties of various phosphate sugar isomerases are reviewed in terms of their substrate specificities and their applications in the production of valuable rare sugars because of their functions such as low-calorie sweeteners, bulking agents, and pharmaceutical precursor. Specifically, we focused on the industrial applications of D-ribose-5-phosphate isomerase and D-mannose-6-phosphate isomerase to produce D-allose and L-ribose, respectively.
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