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Pot Cultivation Method of Veronica rotunda Nakai (둥근산꼬리풀의 포트 재배 방법)

  • Yeon, Soo Ho;Lee, Seung Yeon;Lee, Cheol Hee
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.88-88
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    • 2019
  • 현삼과(Scrophulariaceae)의 둥근산꼬리풀(Veronica rotunda Nakai)은 흰색의 꽃이 총상화서로 피며, 관상용으로 쓰인다. 또한, 접선골도라 하여, 전초를 약용하고 활혈, 지혈, 청폐열, 화간위에 효능이 있는 자생식물이다. 본 연구는 둥근산꼬리풀의 포트 재배방법 확립을 위하여 2018년 5월 15일에 파종하여 생산된 유묘를 7월 16일에 정식하여 10월 15일까지 약 14주 동안 수행하였다. 식재용기 실험은 비닐포트[3치($7{\times}7cm$), 4치($9{\times}8.5cm$)]와 플라스틱 화분[8호($7{\times}7cm$), 10호($9{\times}9cm$), 12호($10.5{\times}10.5cm$)]를 이용하였고, 토양 종류[중화 피트모스:펄라이트(3:1, 4:1), 마사토:중화 피트모스(2:1, 3:1)], 묘의 소질[파종 립수(1, 2, 4, 6립), 파종 용기(162, 200, 288구 트레이)] 등의 연구를 진행하였다. 대조구는 플라스틱 화분 10호에 원예상토를 충진하고 200구 트레이에 4립씩 파종하여 생산된 1셀을 정식하였다. 연구의 결과, 식재용기에 따른 둥근산꼬리풀의 생육은 플라스틱 12호 화분에서 가장 양호하였으며, 토양의 양이 많을수록 전반적인 생육이 증가하였다. 토양 종류별로는 원예상토에서 재배한 처리구에서 양호한 생육을 보였다. 중화 피트모스와 펄라이트 3:1 혼용토의 경우, 원예상토와 전반적인 생육에 큰 차이가 없어 이용가치가 있을 것으로 판단된다. 한편, 피트모스의 비율이 높은 4:1 혼용토에서는 비교적 생육이 억제되었으며, 잎이 황화되었다. 마사토와 중화 피트모스의 혼용토는 원예상토에 비해 왜화되는 결과를 보였으며, 측지수, 마디수, 엽수에는 큰 영향을 주지 않았다. 그러나 개화율을 감소시키는 결과를 보였다. 셀당 파종한 종자의 양을 달리하여 생산된 유묘를 정식하여 재배한 결과, 전반적인 생육은 1립 파종구에서 양호하였다. 한편, 파종량이 많을수록 초장, 절간장이 감소하며, 포트당 마디수, 측지수 및 개화율이 증가하여, 본 연구의 목표인 관상적 이용에 적합한 것으로 판단된다. 파종용기별 생산된 유묘이식 결과, 초기생육이 왕성할수록 후기생육도 우수하였다. 162구 생산묘 정식구는 다른 처리구보다 전반적으로 생육이 왕성하였으며, 다음으로 200구 순이었다. 파종용기에 따른 묘의 크기는 정식 후의 개화율에 유의적인 차이가 없었다. 따라서, 둥근산꼬리풀의 재배는 플라스틱 화분 12호에 원예상토를 충진하여 162구 트레이에 셀당 6립 파종하여 생산된 유묘를 정식하는 것이 분화용 재배에 효과적인 것으로 생각된다. 한편, 재배에 이용되는 토양의 종류에 따른 비율 및 개화촉진 등의 추가적인 연구가 필요하다.

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Status and Quality Analysis on the Biodiversity Data of East Asian Vascular Plants Mobilized through the Global Biodiversity Information Facility (GBIF) (세계생물다양성정보기구(GBIF)에 출판된 동아시아 관속식물 생물다양성 정보 현황과 자료품질 분석)

  • Chang, Chin-Sung;Kwon, Shin-Young;Kim, Hui
    • Journal of Korean Society of Forest Science
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    • v.110 no.2
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    • pp.179-188
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    • 2021
  • Biodiversity informatics applies information technology methods in organizing, accessing, visualizing, and analyzing primary biodiversity data and quantitative data management through the scientific names of accepted names and synonyms. We reviewed the GBIF data published by China, Japan, Taiwan, and internal institutes, such as NIBR, NIE, and KNA of the Republic of Korea, and assessed data in diverse aspects of data quality using BRAHMS software. Most data from four Asian countries have quality problems with the lack of data consistency and missing information on georeferenced data, collectors, collection date, and place names (gazetteers) or other invalid data forms. The major problem is that biodiversity management institutions in East Asia are using unstructured databases and simple spreadsheet-type data. Owing to the nature of the biodiversity information, if data relationships are not structured, it would be impossible to secure the data integrity of scientific names, human names, geographical names, literature, and ecological information. For data quality, it is essential to build data integrity for database management and training systems for taxonomists who are continuous data managers to correct errors. Thus, publishers in East Asia play an essential role not only in using specialized software to manage biodiversity data but also in developing structured databases and ensuring their integration and value within biodiversity publishing platforms.

Interpretation and Preservation Plan for Landscapes of Okyeonsipyeong at Buyongdae, Hahoe Village - Based on the Writings of "Okyeonseodanggi" and "Okyeonsipyeong" - (하회마을 부용대의 경관 해석 및 보전방안 - "옥연서당기(玉淵書堂記)"와 "옥연십영(玉淵十詠)"을 중심으로-)

  • Rho, Jae-Hyun;Oh, Hyun-Kyung;Shin, Sang-Sup
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.31 no.1
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    • pp.59-70
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    • 2013
  • This study was to suggest cultural landscape preservation, value creation, as well as utilization plan to help landscape development of Hahoe village by identify the existence of Okyeonsipyeong(玉淵十詠) natural features, which were set around Buyongdae(芙蓉臺) in Hahoe Village by Seoae(西崖) Ryu, Seongryong(柳成龍), and understanding their characteristics and meanings of natural features and meanings. Based on the writings of "Okyeonseodanggi" and "Okyeonsipyeong", the major results of this study are as belows. 'Okyeon(玉淵)' letters carved on the rocks, also known as the name of pavilion in Okyeonjeongsa(玉淵精舍), is the center of Okyeonsipyeong that symbolizes the enlightenment of clean noble man, as well as the symbolic locational expression of studying room. One of Okyeonsipyeong, 'Wansimjae', is assumed to be the name from the combination of two Buddhist names, 'Wanjeok(玩寂)' and 'Seshim(洗心)', 'Dangho(堂號)', lined on both sides with Wonlakjae, the residence of Seoae, as the center. Wansimjae is after all the natural feature indicating the overall Okyeonjeongsa as the core of Okyeonsipyeong with west edge Gyeomamjeongsa(謙巖精舍). Among ten Okyeonsipyeong natural features, Wansimjae(玩心齋), Ganjukmun(看竹門), Gyeomamsa(謙菴舍), Dalgwandae(達觀臺), Ssangsongae(雙松厓), and Dohwacheon (桃花遷) are on the right side of the stairway from Okyeonjeongsa to Gyeomamjeongsa, while Chuwoldam(秋月潭), Neungpadae(凌波臺), Gyeseonam(繫船巖), and Jijuam(砥柱巖) are on the road to the cliff under river cliff in Buyongdae as well as to the dock, and all are located within 500m radius close and diameter area. As the results of lexeme and context analyses of Okyeonsipyeong poet, they are mainly about Confucian teachings symbolizing the constancy of the classical scholar including ego becoming one with the nature and back to the nature, unworldliness and farsighted view, transcendence and seclusion, as well as integrity spirit. In Dohwacheon and Gyeomamsa poets, there is Tao characteristics and brotherhood that pursue fairylands such as Mooreungdowon(武陵桃源). To create tourism brand and landscape of Okyeonsipyeong, it is necessary to prepare storytelling plans including the letters carved on the rocks introduction in Buyongdae area, and also synopsis of the Silgyeongsusang musical, 'Buyongjiae(芙蓉之愛)' that is related to 10 natural features. In addition, the related plans of the experience road from Gyeseonam, which is the boat stop in Buyongdae, to Ganjukmun of Okyeonjeongsa, and again to viewing routes on the stairways to Gyeomamjeongsa using boats are necessary. For preliminary preservation and maintenance plans, the safety of the stairway from Okyeonjeongsa to Gyeomamjeongsa should be secured, the rock inscription should be preserved, landscape interpretation plates should be installed, trees and shrubs around Dohwacheon rock inscription should be removed, Dalgwandae letters carved on the rocks should be restored, and the bamboo forest outside Ganjukmun as well as Prunus persica plantation around Dohwacheon should be pointed out.

Study on Anti-inflammatory and Anti-microbial Effect of Pinus rigida Mill. inner Bark Extracts as a Cosmetic Material (리기다소나무(Pinus rigida Mill.) 내수피 추출물에 대한 화장품 소재로써의 항염 및 항균효과)

  • Jang, Min-Jung;Kim, Young-Hun;An, Bong-Jeun;Lee, Chang-Eeon;Lee, Jin-Tae;Kim, Sea-Hyun;Lee, Byung-Guen;Lee, Do-Hyung
    • Journal of Korean Society of Forest Science
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    • v.97 no.3
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    • pp.215-220
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    • 2008
  • Recently, there has been a great deal of interest in the applications of plant-based extracts to both cosmetic and medicinal industries. The objective of this study was to investigate the anti-inflammatory and antimicrobial effect of P. rigida extracts by water and ethyl acetate. Anti-inflammatory and anti-microbial effect of P. rigida extracts by water and EtOAc were investigated by using nitrite scavenging ability, nitric oxide production and anti-microbial ability. In the test of nitrite scavenging ability, P. rigida extracts by water and EtOAc showed 88.7% and 99% at 100 ppm concentration, respectively. The cell viability was measured using the MTT assay at 24 hours after P. rigida extracts as shown in over 80%. Anti-inflammatory effect was examined in LPS stimulated RAW 264.7 cells. NO productions in LPS and P. rigida extracts stimulated group were decreased in a concentration and were dependent on time as compared with LPS stimulated. The water extracts showed the highest inhibition at the 100 ppm concentration. In anti-microbial activity test, the water extract with 3.0 mg/disc resulted in the clear zone of 14 mm, and ethyl acetate with that of 15 mm for Staphylococcus aureus. However, P. rigida extracts didn't show any growth inhibitory effect on Esherichia coli. These results indicate that the extracts of P. rigida have anti-inflammatory activities as a cosmeceuticals.

A Study on the Adaptation and Change of Amusement Culture on the Case of Wolmido Pleasure Ground during the Japanese Colonial Era (일제강점기 월미도유원지를 통한 행락 문화의 수용과 변화에 관한 연구)

  • Kim, Jeoung-Eun
    • Journal of the Korean Institute of Landscape Architecture
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    • v.42 no.5
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    • pp.134-147
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    • 2014
  • Pleasure grounds, which were introduced during the Japanese colonial era, were places for organizing new amusement activities, and developed into a large-scale private spaces and a new type of public space at the same time. This study explores the scenery and accommodations of pleasure grounds and the changes of the amusement culture through the Wolmido Pleasure Grounds, which was a typical pleasure grounds of the time. At that time, Wolmido became a comprehensive amusement/entertainment place with many elements of both Western and Japanese pleasure grounds such as exotic buildings harmonized with trees, a beach, a seaside school, public playing field, and zoo constructed on the Island. Wolmido Pleasure Ground, which was connected with Kyungsung by Kyungin railroad during the Japanese colonial era, is a good example showing the process of the popularization and commercialization of the amusement culture. The process of popularization of amusement shows the spreading of the enjoyment of leisure time with amusement activities through appreciating the beautiful scenery of the pleasure grounds among various social classes. The caste system was broken and anyone could use the pleasure grounds by paying the fee, of which there were many kinds, so the distinction between genders and the different classes, such as the Chosun people and Japanese, regarding amusement in pleasure grounds disappeared gradually. Also, pleasure grounds were a place for Western hobby-sports activities and were the means to generalize collective and dynamic activities through summer school and various sport games. At the same time, there were places for deviation from the existing social norms when it was combined with entertainment facilities. The commercialization of amusement took place in the form of an artificial entertainment culture within an artificial environment. First, the scenery was artificially constructed and this scenery created the image of paradise such as 'captivating summer vacation spot' and 'water kingdom'. This was the result of the combined intentions of the colonial authority, the railroad company and the amusement corporation to produce economic profits and encourage development in the area. Second, an artificial spectacle was constructed using nature as the backdrop. Buildings of various styles created a modernized and exotic image when they were combined with each other. Artifacts such as breakwaters and arcades created new attractions for people that enabled them to view both nature and the crowds from a whole different perspective. Third, pleasure grounds contributed to the advent of passive users who would just follow the given use and instructions. In this way, one can find the prototype of popular entertainment places of today such as sightseeing complexes, amusement parks, and theme parks through the construction of amusement grounds as a place for providing dynamic activities.

Effect of Artificial Shade Treatment on the Growth and Biomass Production of Several Deciduous Tree Species (인공피음처리가 주요 활엽수종의 생장과 물질생산에 미치는 영향)

  • 최정호;권기원;정진철
    • Journal of Korea Foresty Energy
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    • v.21 no.1
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    • pp.65-75
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    • 2002
  • The study was carried out to determine the growth and biomass production of major deciduous trees including Betula platyphylla var. japonica, Betula schmidtii, Zelkova serrata, Acer mono, Prunes sargentii, and Ligustrum obtusifolium subjected to artificial shade treatment in nursery field. The six deciduous trees seedlings grow for 2 years under different light intensity of 100%, 38-62%, 22-28%, 7-20%, and 2-6% of the full sun light intensity. The results were as follows; In the seedling heights and root collar diameters of shade intolerant species like Betula platyphylla var. japonica and Betula schmidtii, the relative growth rates of seedlings grown in full sun showed 2 times as compared with those subjected to the shade treatment of 2-6% light intensities of full sun. In the shade tolerant species like Acer mono ant Ligustrum obtusifolium, the growth performances were better in the seedlings grown in 38-62% light intensities of full sun. Total dry mass including the dry mass of leaves, shoot and root were as a whole decreased with shade treatment. The ratio of the dry mass of leaves and stem increased the dry mass of root. T/R ratio of the seedlings increased by decreasing the relative light intensity. And the T/R ratio of 2-6% light intensities of full sun was ranged from 1.1~5.0 were greater in the full sun light was ranged from 0.6~3.2. Light intensity by artificial shade treatment decreased in deciduous trees when compared on the whole, it showed tendency that SLA increases, increased that seeing resemblant tendency in LAR and LWR and changed of light intensity is strong, it increased that showed difference as statistical. But, LWR of Betula platyphylla var. japonica increased gradually and showed tendency that decreases rapidly in the shade treatment of 2-6% light intensities of full sun. This result is thought that biomass production decreased by shading treatment influenced in physiological characteristics such as leaf area and decrease of the leaf amount.

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Original Landscape of MuGi-YeonDang and Yuhoejeong Pavilion Area in Chirwon through (<하환정도(何換亭圖)>를 통해 본 칠원 무기연당(舞沂蓮塘)과 유회정(有懷亭) 일곽의 원형경관)

  • Rho, Jae-Hyun;Son, Hee-Kyung;Park, Tae-Hee
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.35 no.4
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    • pp.1-13
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    • 2017
  • This thesis aims to research the original landscape of an area in Chirwon by comparing and interpreting the current and the former landscape of the time around 1860, in which was created. Inside the painting, MuGi-YeonDang(舞沂蓮塘), its nearby garden facilities and landscape are described. The conclusions of the research are as follows. Around the inner garden(內園) called Gukdam(菊潭), core spaces of Mugi-YeonDang were Hahwanjeong(何換亭) and Pungyongnu(風浴樓). After 1971, Chunghyosa(忠孝祠), Yeongjeonggak(影幀閣) which was built as inheritance of Giyangseowon (沂陽書院), and other buildings were added. On the opposite of Hahwanjeong, there is a designed pond inside Gukdam, in which three pieces of bizarre stones and colorful flower plants and trees reside. In the middle of the pond, there is an center island(中島), constructed with Bonghwangseok(鳳凰石) and Napduseok(衲頭石). Two different kinds of trees are settled on top of the stones, and one of them is identified as a maple. In the external scenery(外境), Jakdaesan Mountain and Cheonjusan Mountain are located at the upper part of Mugi-Yeondang, and Bibo Forest(裨補林), which does not exist anymore, was located at the lower part of it. A notable achievement in own research was to discover the Ju family's graveyard(朱氏墓群) consisted of more than 10 murals at the lower part of Mt. Jakdaesan in the outer space and the remains of 'Byeoreop(別業) Yuhoejeong(有懷亭)' at the nearby Sanjeong-ri(山亭里) area, which was the Ju family's gravesite(Seonsan, 先山). The discovered remains showed the presence of a square pond(方塘) and an island in the center of it(中島) in the form of Seokgasan(an artificial mountain made with stones), a stone monument called Mangchudae(望楸臺), etc. The Seokgasan was consisted of processed natural stones, and layers of the stones were piled up for it. On the side of the layered stones, 'Gyeongam(敬嵒)' and 'Sesim(洗心)' are engraved. Especially, Gyeongja(letter Gyeong, 敬字) is a copy of the Gyeongja Rock(敬字岩) of Sosu-Seowon(紹修書院), which is a symbolic garden language mutually used in the signboards of Pungyongnu and Musansa(武山祠), a place built to enshrine Ju, Sebung(周世鵬). Through the written names of the building found in , it can be assumed that the name of the square pond with Seokgasan was Taehwaji or Jeongwudang, and the name of the Seokgasan was Sogeumgang(小金剛) or Sobangjang(小方丈). The names correspond to the names of the Seokgasan of Gukdam, which was Yangsimdae(養心臺) and Bongnaesan(蓬萊山). By means of the corresponding names, it can be inferred that the relations between the spaces were intended. was originally created as 'a manor painting(莊園圖)', led by the 15th generation of the Ju family who moved into Chirwon-ri, Haman. The painting describes not only the back garden but also the external scenery, thus it provides important evidences for understanding Mugi-YeonDang and its nearby landscape, and is helpful to its maintenance and restoration.

A Critical Review about Application of IUCN Red List Criteria at Regional Level to Korean Endangered Vascular Plants Assessed by the Ministry of Environment, Republic of Korea (환경부 멸종위기 관속식물 지정 기준으로 사용된 IUCN 지역 적색목록 평가 분석)

  • Chang, Chin-Sung;Kwon, Shin-Young;Son, Sungwon;Kim, Hui
    • Journal of Korean Society of Forest Science
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    • v.107 no.4
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    • pp.361-377
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    • 2018
  • The aim of this study was to examine whether the guideline by the Ministry of Environment (ME) successfully and appropriately applied the IUCN Red List criteria at regional level and the rare and endangered national list considered eligible. A certain number of vascular plants, which are widely distributed in the world or in east Asia, deemed to be ineligible for assessment at a regional level as Not Applicable category (NA), because it occurs at very low numbers in South Korea. Among 377 vascular plant taxa evaluated by the ME, NA included 238 species, which represented 63.1%. The number of synonymized species or illegitimate name species were 13 species, which accounted for 3.4%. 21 species (9.3%) were threatened at global level and 103 species were possibly candidates species list for Red List assessments at regional level in the near future. The proportion of NA or waiting list was 66.6% among the list assessed by the ME. The most common errors involved incorrectly application of species extinction in case of population extinction in South Korea to the assessment and provided incorrect interpretation of the Red List criteria at regional level. The most assessments proposed by ME were not backed up without quantitative data quality, justifications, and sources. It is suggested that the risk of extinction should be reassessed at least in the Korean peninsula within the light of their overall distribution including far eastern Russia and North eastern China in north and for Japan and Taiwan in south for regional assessment. The results obtained here using the IUCN criteria at regional level showed that the list proposed by the ME produced an overestimation of the number of threatened vascular plants. Also, the misapplication of the term 'species extinction' for regional assessment was open to some degree of subjectivity and misinterpretation.

A Study on the Transmission Process of Yeoju-Palkyung in Old Poems and Map (팔경시와 고지도에 투영된 여주팔경의 전승양상)

  • Rho, Jae-Hyun
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.29 no.1
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    • pp.14-27
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    • 2011
  • The study reviewed the content and the meaning of the present Yeoju Palkyung(eight scenery) through analyzing and interpreting the Palkyung poems, old maps and paintings, and classic materials transmitted in Yeoju area, and investigated the transmission process. Although five scenes of the Yeoju Palkyungs illustrate abstract landscapes derived from the Sosang Palkyung, there are mixed with local sceneries showing famous historical ruins in the area and local life of the Yeogang(驪江: river). Seunggyeong(勝景) of Yeoju, highlighted in old paintings, has been emphasized through duplication the object and the view point field of Yeoju Palgyeong(驪州八詠), which is usually symbolized to sailing boats along the Yeogang, forests around Cheongshimru, and the layer Jeontap and Maam above Shinreuksa(神勒寺) Dongdae(東臺). It is quite undoubtful that the Yeoju Palyong of Choi Sukjeong and Seo Geojung is the copy of the present Yeoju Palkyung, but the present version is found to be all included in the Cheonggijeongsipyoung(淸奇亭十詠) of Cho Moonsu since the 17th Century, which shows that the Cheonggijeongsipyoung is viewed that it played an important role for the transmission of the Yeoju Palkyung. Also, it. is concluded that the Yeoju Palyong recorded in Yeojidoseo(與地圖書) is the same landscape collecting with the presend Yeoju Palkyung, which would be dated back at least until the mid 18th Century. In addition, given the fact that the studied old maps show Eight scenery, Sachoneohwa, Shinreukmojong, Yeontanguibum, Paldaejangrim, Yangdonagan, Ibanchungam, Pasagwau, and Yongmoonjeukchui, recorded consistently in the same time order, the eight scenic points in the old maps had been apparently established as the typical copy of the Yeoju Palkyung in the 18th Century. Therefore, the transmission route of the Yeoju Palkyung follows two separate versions, one starting from the Yeoju Palyong(Choi Sukjeung, Seo Geojeong) to Cheonggijeongpalyong to Yeoju Palyoung(Yeojidoseo) to the present. Yeoju Palkyung, and the other from the Yeoju Palyoung Geumsa Palyong(金沙八詠) to the old map Palkyung to the Yeoju Palkyung(the late 18th C). These two transmission processes have their own cultural sceneries having the same origin, which are different only in perspective which attempts to cover the representative scenic landscapes including Yeoju and Geumsa.

Principal Characteristics of Pinus parviflora S. et Z. Native to the Dagelet Island (울릉도(鬱陵島) 섬잣나무의 특성(特性)에 관(關)한 연구(硏究))

  • Ahn, Kun Yong
    • Journal of Korean Society of Forest Science
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    • v.12 no.1
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    • pp.31-43
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    • 1971
  • In order to examine the taxonomic difference between the type of Pinus parviflora S. et Z. native to the Dagelet Island and the type of the species introduced to a number of places of the inland of South Korea, investigations on principal characters of needle, cone and seed were made with a hope to obtain informations on the evaluation of the species for possible use in the reforestation program in Korea in the future. Pinus parviflora is belonged to the Sub-genus Haploxylon of Genus Pinus and it has been speculated among dendrologists that this speoies is not monotypic. 308 rendomly selected trees from 8 different elevations of a natural stand of P. parviflora in the Dagelet Island, and 168 trees of P. parviflora growing at 15 different locations of the inland of South Korea were employed as samples along with 300 trees of P. koraiensis as control. The results obtained are summarized as follows: 1. The needle length of the Pinus parviflora of the Dagelet Island is longer than that of the species growing in the inland by 21-35 percent with statistical significancy. (Table 2) 2. In the cross section of needle, no resin canal was observed in about 50-70 percent of the sample trees of the Dagelet Island, whereas the resin canals appearing at external in most cases were observed in all sample trees from the inland. Consequently, the number of resin canals per needle was 0.4-0.9 with the Dagelet Island type and 2.0-2.7 with the inland type and these differences were statistically significant. (Table 3, Fig.2) 3. The Pinus parvviflora type of the Dagelet Island bas yellowish brown cones, and the Pinus parviflora type of Suwon and Kwangyang has redish brown cones. In both the length of cone and the number of cone scale, the difference between the type of the Dagelet Island and the type of the inland was also statistically significant. The cone scales of the Dagelet Island type are slightly opened, whereas the cone scales are widely opened with both of Suwon and Kwangyang type. (Table 4, Fig. 3) 4. the seed color, of the Dagelet Island type is yellowish brown, while it is greyish brown with Kwangyang and Suwon type. In the length and width of seed, the Dagelet Island type showed significantly larger values than that of the inland type. The length of seed was longest with the Kwangyang type being followed by Suwon and the Dagelet Island type in ordar. The seed wing of the Kwangyang type are longer than the seed, while that of the Dagelet Island type is degenerated to be shorter than the seed. (Table 5, Fig. 4) 5. The Pinus parviflora type of the Dagelat Island is similar in many respects to the southern type of Pinus parviflora of Japan except that many has no resin canals in the needle. 6. On the basis of the results obtained in this study, it may be concluded that the type of Pinus parviflora of the Dagelet Island is significantly different from the type of the species introduced to the inland and that there is no recognizable variation between the population of the different altitude of the Dagelet Island and the individual variation within population is also negligible. In the light of the high value of the tree not only as an ornamental tree but as an economical tree, The type of Pinus parviflora of the Dagelet Island is considered to be recommendable to be used for the future reforestation program of Korea.

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