• Title/Summary/Keyword: Subalpine

Search Result 138, Processing Time 0.023 seconds

Increasing Atmospheric Carbon Dioxide and Growth Trends of Korean Subalpine Conifers - Dendrochronological Analysis - (대기중(大氣中) 이산화탄소 증가와 한국산 아고산(亞高山) 침엽수류의 생장동향(生長動向) - 연륜연대학적(年輪年代學的) 분석(分析) -)

  • Park, Won Kyu
    • Journal of Korean Society of Forest Science
    • /
    • v.82 no.1
    • /
    • pp.17-25
    • /
    • 1993
  • Tree-ring data of subalpine conifers growing in Korea were analyzed to evaluate the possibility of enhanced tree growths due to increased atmospheric carbon dioxide. A total of 64 trees of three species(Taxus cuspidata, Pinus koraiensis, Abies koreana) were sampled from three mountain ranges (Seolak, Sobaek, Chiri) at 1200~1750m(above sea level) and four chronologies were developed in spans of 209~412 years. No apparent growth increases were found in the graphs of chronologies. As comparing the growths of 1900-1949 and 1950-1989 period, only one chronology possessed higher mean growth in the post-1950 period. Growth increase found in the Pinus koraiensis chronology from Mt. Seolak was 8% but it could not be solely attributed to increased carbon dioxide concentration.

  • PDF

Wood Anatomy and Identification of North American Firs (Abies)

  • Eom, Young-Geun;Kwon, Oh-Kyung
    • Journal of the Korean Wood Science and Technology
    • /
    • v.37 no.5
    • /
    • pp.451-458
    • /
    • 2009
  • Anatomical comparison of 8 North American species of Abies was executed to provide taxonomic information. The species of eastern (balsam and Fraser fir) and western (Pacific silver, white, grand, subalpine, California red, and noble fir) were found to be separated on the basis of crystals and color of contents in ray parenchyma cells and ray height. In eastern species, crystals in ray parenchyma cells were absent and ray parenchyma cell contents were colorless to very light. These two eastern species were further characterized by the absence of uniseriate rays exceeding 25 cells in height. In western species, only subalpine fir had colorless to very light contents but the remaining five species have dark contents in ray parenchyma cells. Crystals were absent to extremely sparse in Pacific silver fir, somewhat frequent in noble fir, frequent in grand and California red fir, and very frequent in white fir. Uniseriate rays exceeding 25 cells in height were regularly found in grand and California red fir but absent in white and noble fir.

Development of Trip Programs with Nature Interpretation Using Geomorphic Characteristics of Mt. Halla (한라산의 지형 특성을 활용한 자연해설 탐방 프로그램의 개발)

  • KIM, Taeho
    • Journal of The Geomorphological Association of Korea
    • /
    • v.19 no.2
    • /
    • pp.17-29
    • /
    • 2012
  • In order to improve a trip pattern in Mt. Halla climbing only to a summit, two trip programs with nature interpretation have been developed using the geomorphic characteristics of Mt. Halla which are distinct from those of mountains in the Korean peninsula. It also aims to help conservation of natural environment of Mt. Halla and to enhance the visitor satisfaction in Mt. Halla. The subalpine trip program is carried out on a 1.5 km-long trail between Wissaeoreum Hut and Janggumokoreum. Program participants are able to learn expertise about, and understand vulnerability of, a subalpine ecosystem, Consequently, the program can obtain an educational attainment getting them to recognize the necessity of preserving the subalpine zone of Mt. Halla as an important natural resource. The mountain river trip program is performed on a 1.5 km-long reach of Byeongmun River between Gwaneumsa trailhead and a gorge upstream of Gurin Cave. The program is capable of exhibiting effectively the river characteristics of Jeju Island using the geomorphic and hydrologic properties of Byeongmun River which differ from those of rivers in the Korean peninsula. Since the subalpine grassland and ephemeral stream of Mt. Halla are the visiting places which are rarely experienced in the Korean peninsula, the program participants can understand the regionality of Jeju Island as well as Mt. Halla through trip activities.

Vegetation structure and ecological properties of Picea jezoensis community (가문비나무(Picea jezoensis)군락의 식생구조와 생태특성)

  • Do, Mi-Sole;Lee, Ji-Hye;Gwon, Jae-Hawn;Song, Ho-Kyung
    • Korean Journal of Agricultural Science
    • /
    • v.39 no.4
    • /
    • pp.525-534
    • /
    • 2012
  • This study was conducted to classify community and verify vegetation structure of Picea jezoensis community in subalpine zone of Mt. Kyebang, Mt. Jiri, Mt. Deogyu, 39 releves set up and was carried out to analyze ordination. P. jezoensis Community was classified into Acer ukurunduense subcommunity, Quercus mongolica subcommunity, Syringa reticulata var. mandshurica subcommunity and P. jezoensis typical subcommunity. The order of important value of the forest community with DBH 2cm above plants was P. jezoensis (89.22), Acer komarovii (30.50), Abies koreana (18.81), Rhododendron schlippenbachii (18.10), Sorbus commixta (17.19), Betula ermanii (16.89), Pinus koraiensis (16.80), Taxus cuspidata (12.45), Acer ukurunduense (11.73). The DBH analysis suggests that P. jezoensis will maintain dominant position.

Pollen Analytical Study on Humus Accumulated at Plant Communities of Mt. Seolag (설악산 식물군락 유기물층의 화분분석학적 연구)

  • 강상준
    • Journal of Plant Biology
    • /
    • v.30 no.4
    • /
    • pp.267-276
    • /
    • 1987
  • A pollen analytical study was carried out on the accumulated humus samples collected from 27 sites under the different plant communities of Mt. Seolag. These pollen spectra were then compared with the actual vegetation. The aboreal pollen(AP) and non-abnoreal pollen(NAP) were 1 Family 25 Genus and 5 Family 5 Genus, respectively. Among the aboreal pollen identified, the pollen of Pinus, Quercus, Betula and Acer were appeared in abundance and the coniferous pollen of Pinus was occupied at least 20%-65% through all the sites studied. The pollens of Abies, Betula, accer, Quercus, Carpinus, Corylus, Fraxinus, Styrax, Prunus and Ericaceae were in accordance with the present vegetation but the other pollens were inconsistent with the actual vegetaton. It suggests that it was caused by the difference between Wehseolag and Namseolag of subalpine zone in Mt. Seolag was 200 m by pollen spectra. Quercus was distributed at the lower part of Namseolag and the subalpine boreal elements were increased with increasing altitudes. The pollen spectra of each site was put together into 5 groups of pollen assemblage by cluster analysis and the community coefficient (CC) was over 60% between all sites studied.

  • PDF

Review of Phytosociological Vegetation Units of Abies koreana Forest on Mt. Halla (한라산 구상나무림의 식물사회학적 식생단위의 재검토)

  • 송종석
    • Journal of Plant Biology
    • /
    • v.34 no.4
    • /
    • pp.341-347
    • /
    • 1991
  • The character and differential species of Abies koreana community, a subalpine coniferous forest, on Mt. Hall a and its vegetation unit were reviewed, based on literature published up to date. Song and Nakanish (1985a) originally described Saso-Abietetum koreanae Song et Nakanishi 1985 for the community. At that time, we were fully justified in establishing the nomenclature. Nevertheless, against this nomenclature, Yim and Kim (1990) made a objection, and it was renamed as what is called Saso quelpaertensi-Abietetum koreanae (Song et Nakanishi) corr. Yim et Kim 1990. In their previous study(Yim et al., 1990) being the root of the nomenclature, however, they did not study on the full layers containing the moss layer of bryophyte and lichen for the stratification of the Abies koreana community, in spite of the importance of the species of moss layer for the selection of character and differential species of vegetation units belonging to Vaccinio-Piceetea Br.-Bl. 1939, and also the floristic composition from their study was not compared with that of the vegetation units of the subalpine coniferous forests in Korea Peninsula, Japan, Maritime Province of Siberia and Northeast China. Among the four character species selected by them, it is clear that Maianthemum bifolim and Lonicera maackii are species no having the characteristic value from the phytosociological viewpoint. Besides, Sasa quelpaerthensis described in their nomenclature is a synonym of S. palmata (Suzuki, 1978). Therefore, their nomenclature is invalid and comes under a contravention (Infringement of Priority) to the Code of Phytosociological Nomenclature (Barkman et al., 1986). Saso-Abietetum koreanae was amply justified also by author's recent study (Song, 1991)examined throughout the range of subalpine coniferous forest in Korea. With the discussion of justification of Saso-Abietetum koreanae, a association discussion was brought in the present review.

  • PDF