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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Korean Journal of Ecology
Journal Basic Information
Journal DOI :
The Ecological Society of Korea
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Volume & Issues
Volume 23, Issue 6 - Dec 2000
Volume 23, Issue 5 - Oct 2000
Volume 23, Issue 4 - Aug 2000
Volume 23, Issue 3 - Jun 2000
Volume 23, Issue 2 - Apr 2000
Volume 23, Issue 1 - Feb 2000
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Ions Dynamics in the Rainfall, Throughfall, Stemflow and Soil Solution of Red Pine (Pinus densiflora) Stands at Chunchon
Yoo, Jeong-Hwan ; Kim, Young-Kul ; Lee, Choong-Hwa ; Byun, Jae-Kyoung ; Choi, Kyung ; Oh, Jeong-Soo ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 347~351
This study was conducted to determine the ions dynamics in rainfall, throughfall, stemflow and soil solution of Pinus densiflora stands at Chunchon, Kangwon-Do. Ion concentration of stemflow was greater than that of rainfall and throughfall. The EC values of rainfall, throughfall and stemflow were 15.3 μS/cm, 23.9 μS/cm and 55.9 μS/cm, respectively. Average pH of soil solution was 4.8, 5.4, 5.5 and 5.8 at 10, 20, 30 and 50 cm depth, respectively. The cations were higher in K/sup ＋/ and Ca/sup 2＋/ for rainfall, throughfall and stemflow, and in Ca/sup 2＋/ for soil solution. The anions were higher in SO₄/sup 2－/ for rainfall, throughfall and stemflow, and in NO₃/sup －/ for soil solution.
Antimicrobial Activities of Extracts from Several Native and Exotic Plants in Korea
Kim, Yong-Ok ; Lee, Eun-Ju ; Lee, Ho-Joon ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 353~357
The soil pH favored by several native plants in Korea ranges 5.33∼7.20, while a more acidic range of pH 3.95∼6.10 is acceptable to exotic plants. Ethanol extracts of native and exotic plants in Korea were investigated for antimicrobial activity against Bacillus sphiaericus 2362, Bacillus thuringiensis var. subtilis and Bacillus thuringiensis var. cereus and Actinomycetes. Higher antimicrobial activity was observed from the extract of exotic plants than those of native plants. The ethanol extract of Ambrosia artemisiifolia var. elatior was observed to have the highest antimicrobial activity against 4 species of soil microbes. Especially, antimicrobial activity of Ambrosia artemisiifolia var. elatior showed the largest clear zone of 48mm in Actinomycetes. Larger clear zone was formed in the order of caffeic acid, benzoic acid and ρ -coumaric acid among the nine chemical compounds. Accordingly, the antimicrobial activity of Ambrosia artemisiifolia var elatior against Actinomycetes was found to be due to the synergetic effect of chemical compounds.
Recent Spatio-temporal Changes of Landscape Structure, Heterogeneity and Diversity of Rural Landscape: Implements for Landscape Conservation and Restoration
Hong, Sun-Kee ; Rim, Young-Deuk ; Nakagoshi, Nobukazu ; Chang, Nam-Kee ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 359~368
Landscape change is the modification and replacement of landscape elements in accordance with human management and natural disturbance on land mosaics. During landscape change, changes in patterns such as heterogeneity, diversity and shape, and juxtaposition of spatial elements are also accompanied. For the sustainable landscape system, therefore, spatial characteristics of the landscape should be considered in implementation of landscape conservation and restoration planning. Short-term changes of land-use and landscape pattern during the 10 years of 1980s and 1990s were investigated in the agriculture-forestry dominated landscape system through the statistics and the analysis of landscape-vegetation map. Study area is Yangdong-myon, Yangpyung-gun (37°27′30"N, 127°46′50"E), Kyonggi-do, in central Korea. Landscape change of this region was significantly related to the recent industrialization according to socio-economic development. Analyses of landscape pattern show that the area of secondary forest sustained by human activity decreased and it was replaced with large exotic plantations during this period. Area of paddy field was also extended. Fractal dimension of the total landscape increased, but that of paddy field area decreased due to rearrangement for mechanized farming. Moreover, the area of landscape management regimes such as plantation and cultivation increased in land mosaics during this period.
Physicochemical Characteristics and Microbial Activity in the Various Urban Soils
Kong, Hak-Yang ; Cho, Kang-Hyun ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 369~375
Although urban soils must be well understood in order to ensure their conservation and optimum use, these intensively managed and disturbed soils have not been extensively investigated up to now. Urban soils from forest, lawn, streetside, and bare ground and under pavement in Inchon had high bulk density as a result of widespread trampling-induced soil compaction. The various urban soils including forests showed lower water content and higher temperature as compared with rural forest soil. Chemically, soils from urban areas had an unusual neutral pH and low organic matter content. Total bacterial numbers in urban soils was only 5∼50% of that in the rural forest soil. An analysis of stepwise multiple regression revealed that soil organic matter was the most important predictor variable on total bacterial number. The dehydrogenase activity of most urban soils was not significantly different from that of rural forest soil, whereas the microbial activity of soils under pavement was lower. Our investigations show that inadequate organic matter of highly compacted soils has adversely affected the abundance of microorganisms involving nutrient cycling in urban soils.
Ecological Characteristics of Picea abies Plantation in Comparison with Fagus sylvatica Population
Lee, Young-Geun ; Cho, Hyun-Je ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 377~382
Picea abies plantation in Mt. Eifel, Germany was studied phytosociologically, with special reference to species composition, structure, ecology and dormancy form, comparing to those of Fagus sylvastica population that once dominated the P. abies plantation. Thirteen plant species appeared on average. According to their ecological distribution, they were classified into three groups, F sylvastica forests, natural coniferous forests and bare-land after clear-cutting. In Luzulo-Fagetum population, Luzula luzuloides was the dominated species while in P. abies plantation was dominated by Avenella flesuosa. In assessment of herbaceous plants by indicator species of Ellenberg, increasing number of shade-intolerant species and acid-tolerant species occurred. In analysis of plant dormancy form, species of Chamaephytes, Phanerophytes and Hemikryptophytes increased, while that of Geophytes decreased. As a result, we found P. abies plantation unstable in ecological aspects.
The Viticetea rotundifoliae in South Korea and Japan
Jung, Yong-Kyoo ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 383~389
A comparative analysis on the Viticetea rotundifoliae (coastal dune shrub vegetation) in South Korea and Japan was carried out. 569 releves from the most typical and homogeneous stands of the coastal dunes in South Korea and Japan were used. This study was accomplished by using the syntaxa and hierarchical system of the Viticetea rotundifoliae in South Korea and Japan according to the Zurich-Montpellier School's method, and syntaxonomy, synecology, syndynamics and syngeography between two countries were also compared with. Coastal dune shrub vegetation in South Korea and Japan were defined to the Viticetea rotundifoliae representing southern type coastal shrub in Northeast Asia. Coastal dune shrub communities of the Viticetea rotundifoliae in South Korea and Japan are considerably corresponded between the two, and contain their own characteristic syntaxa. Coastal dune shrub communities of the Viticetea rotundifoliae in Japan showed much diversification in syntaxa and species composition than those in South Korea.
The Vegetations of Hansan and Chubong Islets
Kim, In-Taek ; Lee, Ji-Hoon ; Jin, Young-Gyu ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 391~395
The vegetations of Hansan and Chubong islets in Tongyoungsi were investigated from April, 1997 to December, 1998 and a synthesis table was constructed. Based on the synthesis table, the vegetation was classfied into 6 communties: Pinus thunbergii community, Pinus densiflora community, Machilus thunbergii community, Chamaecyparis obtusa afforestation, Cryptomeria japonica afforestation, Miscanthus sinensis var. purpurascens community, and 3 subcommunities: Pinus thunbergii typical subcommunity, Quercus variabilis subcommunity, Carpinus coreana subcommunity. The vegetation of Pinus densiflora community around Jeseungdang area is well preserved. However the islet requirs the ecological restoration, and we suggest that the rare species such a Crypsinus hastatus, old trees of Machilus thunbergii and Pinus thunbergii, and the habitat for Machilus thunbergii and Camellia japonica must be preserved.
Ecophysiological Characteristics of Chenopodiaceous Plants - An Approach through Inorganic and Organic Solutes -
Choo, Yeon-Sik ; Song, Seung-Dal ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 397~406
In order to clarify the ecophysiological characteristics of Chenopodiaceae which widely distribute on saline and arid habitats, we collected 10 chenopodiaceous plant species, examined their inorganic and organic solute patterns, and confirmed several common physiological characteristics. In spite of high soil Ca/sup 2＋/ contents, chenopodiaceous plants had a little water-soluble Ca within cells, but contained high contents of acid-soluble Ca particularly as a result of Ca-oxalate formation. These plant species also showed accumulation of inorganic ions such as K/sup ＋/, NO₃/sup －/ and Cl/sup －/, and Na/sup ＋/especially in saline habitats instead of K/sup ＋/ Meanwhile, with respect to nitrogen metabolism they retained high N contents in leaves, but showed very low amino acid contents. Additionally, they contained very little proline known to act as a cytoplasmic osmolyte. To ascertain whether this physiological characteristics in the field also can be found under controlled conditions, 7 chenopodiaceous plants (Atriplex gmelini, Corispermum stauntonii, Salicornia herbacea, Suaeda aspayagoides, Suaeda japonica, Chenopodium album var. centrorubrum, C. serotinum) were selected and cultivated under salt treatments. As well as field-grown plants, selected plant species showed similar solute pattern in growth experiment. In summary, the family of Chenopodiaceae represents the following physiological properties; high storage capacity for inorganic ions (especially alkali cations, nitrate and chloride), oxalate synthesis to maintain lower soluble Ca contents within cytoplasm, and low contents of amino acids. In addition to some characteristics mentioned above, the physiological plasticities of Chenopodiaceae which can properly regulate their ion and solute pattern according to soil conditions may enable its representative to grow in dry sand dune and salt marsh habitats.
Syntaxonomy of the Forest Vegetation and Surrounding Taegu, Korea
Choung, Heung-Lak ; Lee, Ho-Joon ; Lee, Jae-Seok ;
The Korean Journal of Ecology, volume 23, issue 5, 2000, Pages 407~421
The forest vegetation surrounding Taegu area was investigated by the methodology of the ZM school of phytosociology, from September, 1994 to August, 1997. The forest vegetation was classified into 7 communities, 8 subcommunities and 5 afforestations as follows : Quercus mongolica community (Typical subcommunity, Carex siderosticta subcommunity), Quercus variabilis community, Quercus acutissima community, Quercus dentate community, Carpinus cordata-Acer mono community (Typical subcommunity, Quercus serrata subcommunity, Cornus controversa subcommunity), Pinus densiflora community (Typical subcommunity, Sanguisorba officinalis subcommunity, Rhododendron schlippenbachii subcommunity), Lespedeza maximowiczii-Rhododendron mucronulatum community , Robinia pseudo-acacia afforestation, Pinus rigida afforestation, Larix leptolepis afforestation, Pinus thunbergii afforestation, Pinus koraiensis afforestation. The differential species of the Quercus mongolica community were Quercus mongolica, Athyrium yokoscense, Rhododendron schlippenbachii, Fraxinus sieboldiana, Acer pseudo-sieboldianum, Symplocos chinensis for. pilosa, Astilbe chinensis var. davidii, Weigela subsessilis, and Melampyrum roseum, those of the Carpinus cordata-Acer mono community were Acer mono, Carpinus cordata, Carpinus laxiflora, and Staphylea bumalda, those of the Pinus densiflora community were Pinus densiflora, Quercus serrata, Cocculus trilobus, and Juniperus rigida. Constance degree of the Quercus serrate was especially high in shrub and herb layers of the Pinus densiflora community. The results of factor analysis by DCA showed that distribution pattern of the communities were similar to that by Z-M method and that communities were arranged according to soil moisture gradient. Rhododendron schlippenbachii subcommunity of the P. densiflora community and the Typical subcommunity of the Q. mongolica community were distributed in similar environments.