• 한국자원식물학회지
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• 제28권3호
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• pp.350-356
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• 2015

Abeliophyllum distichum is a monotypic taxon of Oleaceae and endemic to Korea. A comprehensive study on embryogeny and fruit and seed coat ontogeny in Abeliophyllum was carried out via microtome and light microscopy. The fertilization occurs during mid– to late April and embryo matures by early July. The embryo development follows the general fashion from globular embryo – transition embryo – heart shaped embryo – torpedo embryo – walking-stick embryo to mature embryo. The pericarp clearly differentiates into three histological zones: exocarp, mesocarp, and endocarp. The young seed comprises 10-12 cells thick seed coat and the mature seed coat comprises an exotesta, 6-8 mesotesta and an endotesta. Any crystals, phenolic-like compounds, idioblasts, and the sclereids are not found in pericarp as well as seed coat. An overall development confirms Solanade type of embryogenesis in Abeliophyllum. The endocarp becomes more prominent in mature fruit and all the layers of endocarp are highly lignified. On the basis of mechanical layer the seed coat is of exotestal type.

• 식물분류학회지
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• 제51권1호
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• pp.33-48
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• 2021

We investigated the bryophyte flora of the Gayasan Mountain National Park in Korea by conducting 18 field surveys in from April of 2009 to November of 2016 at various sites on the mountains. During the surveys, we discovered 204 taxa comprising 57 families, 106 genera, 199 species, 2 subspecies, and 3 varieties. Among these, 145 species were reported as new to the flora of Gayasan Mountain. A checklist based on a study of 903 specimens is provided. The most notable species recorded during the surveys were the rare bryophytes Hattoria yakushimensis (Horik.) R. M. Schust., Nipponolejeunea pilifera (Steph.) S. Hatt., Drepanolejeunea angustifolia (Mitt.) Grolle, Lejeuena otiana S. Hatt., Cylindrocolea recurvifolia (Steph.) Inoue and Pogonatum contortum (Menzies ex Brid.) Lesq.

• 한국자원식물학회지
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• 제27권5호
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• pp.485-500
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• 2014

본 연구는 전라남도 고흥군 외나로도 지역에 대하여 기 확보된 표본과 2011년 현장조사를 바탕으로, 관속식물 분포를 조사하였다. 전체 관속식물은 117과 342속 503종 2아종 62변종 7품종으로 총 574분류군이 확인되었다. 주요내용으로 희귀식물은 8분류군이 확인되었으며, 특산식물은 6분류군이 확인되었다. 환경부 지정 특정식물은 101분류군이 확인되었으며, 귀화식물은 46분류군이 확인되었다. 산림청이 지정한 특별산림보호대상종은 1분류군이다. 그밖에 식물자원은 513분류군이 밝혀졌으며, 그 중 182분류군이 두 가지 이상의 활용성이 기대되는 것으로 나타났다.

• 한국환경복원기술학회지
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• 제22권3호
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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.

• 한국동물학회:학술대회논문집
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• 한국동물학회 2000년도 한국생물과학협회 학술발표대회
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• pp.126.1-126
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• 2000

No Abstract, See Full Text

• 한국자원식물학회지
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• 제35권6호
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• pp.720-761
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• 2022

This study surveyed the vascular flora present in abandoned paddy field type of 237 forest wetlands in Korea to provide baseline data for conservation, management, and monitoring and to support preparation for damage and climate change. The study period was from April 2015 to November 2021. The vascular flora of 237 forest wetlands by abandoned paddy field type were identified to consist of 128 families, 510 genera, 1,022 species, 27 subspecies, 87 varieties, 10 forma, and 1,146 taxa. 4 taxa were identified as grade II endangered wild plants, 185 taxa were identified as northern lineage plants of the Korean Peninsula, 43 taxa were endemic to the Korean Peninsula, and 58 taxa were rare plants as designated by the Korea Forest Service. Further, 296 taxa were floristic target plants and there were 86 taxa of invasive alien plants. According to wetland preference, 79 taxa (6.9%) were obligate wetland plants, 103 taxa (9.0%) were facultative wetland plants, and 61 (5.3%) taxa were facultative plants. Additionally, 66 taxa (5.8%) were facultative upland plants, and 837 taxa (73.0%) were obligate upland plants.

• 한국안전학회지
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• 제35권1호
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• pp.97-106
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• 2020

The objective of this paper is to suggest a new quantification method for multi-unit probabilistic safety assessment (PSA) that removes the overestimation error caused by the existing delete-term approximation (DTA) based quantification method. So far, for the actual plant PSA model quantification, a fault tree with negates have been solved by the DTA method. It is well known that the DTA method induces overestimated core damage frequency (CDF) of nuclear power plant (NPP). If a PSA fault tree has negates and non-rare events, the overestimation in CDF drastically increases. Since multi-unit seismic PSA model has plant level negates and many non-rare events in the fault tree, it should be very carefully quantified in order to avoid CDF overestimation. Multi-unit PSA fault tree has normal gates and negates that represent each NPP status. The NPP status means core damage or non-core damage state of individual NPPs. The non-core damage state of a NPP is modeled in the fault tree by using a negate (a NOT gate). Authors reviewed and compared (1) quantification methods that generate exact or approximate Boolean solutions from a fault tree, (2) DTA method generating approximate Boolean solution by solving negates in a fault tree, and (3) probability calculation methods from the Boolean solutions generated by exact quantification methods or DTA method. Based on the review and comparison, a new intersection removal by probability (IRBP) method is suggested in this study for the multi-unit PSA. If the IRBP method is adopted, multi-unit PSA fault tree can be quantified without the overestimation error that is caused by the direct application of DTA method. That is, the extremely overestimated CDF can be avoided and accurate CDF can be calculated by using the IRBP method. The accuracy of the IRBP method was validated by simple multi-unit PSA models. The necessity of the IRBP method was demonstrated by the actual plant multi-unit seismic PSA models.

• 한국환경복원기술학회지
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• 제20권2호
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• pp.61-77
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• 2017

The purpose of this study was to offer the basic data for conservation of wetland ecosystem by surveying and analysing the vascular plants distributed in Hwapocheon wetland, Gimhae, Gyeongnam, Korea. The numbers of vascular plants were summarized as 292 taxa including 72 families, 192 genera, 262 species, 1 subspecies, 26 varieties and 3 forms. There were 34 taxa of hydrophytes, 23 taxa of emergent plants, 4 taxa of floating-leaved plants, 5 taxa of free-floating plants and 5 taxa of submerged plants. The rare plants were 7 taxa including Aristolochia contorta, Penthorum chinense, Prunus yedoensis(planting), Ixeris tamagawaensis, Hydrocharis dubia, Iris ensata var. spontanea(planting), Acorus calamus and so forth. The Korean endemic plants were 2 taxa including Salix koriyanagi and Salix pseudolasiogyne. The specific plants by floristic region were 19 taxa including 2 taxa of grade V, 1 taxa of grade IV, 5 taxa of grade III, 2 taxa of grade II and 9 taxa of grade I. The naturalized plants were 62 taxa including Chenopodium album, Astragalus sinicus, Helianthus tuberosus, Panicum dichotomiflorum and so forth. The plants that were expected to spread nationwide were 14 taxa including Cerastium glomeratum, Bidens frondosa, Tagetes minuta, Festuca arundinacea and so forth. The invasive alien plants were 6 taxa including Rumex acetosella, Sicyos angulatus, Ambrosia artemisiifolia, Ambrosia trifida, Aster pilosus and Lactuca scariola.

• 환경영향평가
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• 제21권4호
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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.

• 한국환경복원기술학회지
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• 제12권1호
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• pp.13-31
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• 2009

The objectives of this study were to offer the basic data for the restoration and conservation of forest wetland by surveying systematically the vascular plants of Sandeul wetland in Mt. Jaeyak, Miryang-si, Gyeongsangnam-do, Korea. The vascular plants in this wetland were recorded as 232 taxa; 74 families, 178 genera, 200 species, 27 varieties and 5 forma. The major communities were Quercus mongolica, Tripterygium regelii, Alnus japonica, Molinia japonica, Salix gracilistyla and Stephanandra incisa. The numbers of plant species by routes were 168 taxa in A-route, 126 taxa in B and 132 taxa in C. The ecological problems in Sandeul wetland were the afforestation of Pinus koraiensis and P. thunbergii, the appearance of naturalized plants, the invasion of species and the scour of valley. The Korean endemic plants were 5 taxa; Salix hallaisanensis, Hepatica insularia; Chrysosplenium barbatum, Ajuga spectabilis and Weigela subsessilis. The rare plants designated by Korea Forest Service were 3 taxa; Aristolochia manshuriensis, Chrysanthemum lineare and Iris ensata var, spontanea. The naturalized plants were 8 taxa; Rumex acetocella, R. crispus, Trifolium repens, Oenothera lamarckiana, Ambrosia artemisifolia var. elatior, Helianthus tuberosus, Erigeron annuus and Phleuum pratense.