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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Ecology
Journal Basic Information
Journal DOI :
The Ecological Society of Korea
Editor in Chief :
Volume & Issues
Volume 26, Issue 6 - Dec 2003
Volume 26, Issue 5 - Oct 2003
Volume 26, Issue 4 - Aug 2003
Volume 26, Issue 3 - Jun 2003
Volume 26, Issue 2 - Apr 2003
Volume 26, Issue 1 - Feb 2003
Selecting the target year
Synecology of the Forest Vegetation of Yeongjongdo
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 223~236
DOI : 10.5141/JEFB.2003.26.5.223
The vegetation in this study area was divided into 10 plant communities: Pinus thunbergii, P. densiflora, Quercus acutissima, Q. mongolica, Q. serratea, Q. variabilis, Q. aliena, Q. dentata, Carpinus coreana, Betula davurica and 3 afforestations; Pinus rigida, Robinia pseudo-acacia, Castanea crenata. The dominant species in each stratum as determined by R-NCD appeared to be Q. acutissima, P. densiflora, Platycarya strobilacea, Sorbus alnifolia and Q. aliena in the tree-2 layer, Rhododendron mucronulatum, P. strobilacea, Q. serrata, Q. aliena and Q. acutissima in the shrub layer, and Carex lanceolata, C. humilis, R. mucronulatum, Mischanthus sinensis var. purpurascens and Oplismenus undulatifolius in the herb layer. The distribution of diameter at breast height(DBH) showed the highest percentage (56%) in the range of 2∼10㎝ in the study area and it was investigated as being in the restoration phase after disturbance. The average of the age of trees was under 40-years-od. The pH of soil collected at each site appeared to be within the range between 4.53 and 5.10(the average of 4.73) in each community, organic matters appeared higher than the value in Q. mongolica, P. rigida, C. crenata communities compared to P. thunbergii, P. densiflora communities. And soil organic matters and total nitrogen were highly correlated with their contents.
A Study on Characterizing the Boundary Shape and Size of Land Use Patches in Mountain Village, South Korea: Cases of Sansu and Ajick Villages in Gimje City, Jeonlabukdo
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 237~246
DOI : 10.5141/JEFB.2003.26.5.237
A mountain village is defined as that which is autogenously formed over at least 100 years and supported by agricultural yields and forest products and forest area portion of which is over 70% in Guidelines for the Comprehensive Development Planning of Mountain Village. Recently, concerns about management planning of the Green and Eco-Village causes researches related to the Mountain Village's economics, tourism attractiveness, experience programming and investigation of the ecosystem and environment based on the village area. This kind of eco-village project should be supported by ecological evaluation of its spatial structure. But there is rare research of the village spatial structure studied from the ecological viewpoint originally. The purpose of this study is to interpret the spatial structure of Korean mountain village on the landscape ecological paradigm. The paradigm components are patches, corridors, networks, and matrix which explain the land and spatial structure at landscape scale. For this purpose, we selected two case study areas- Sansu and Ajick villages in Gimje city, Jeonlabukdo. We interpreted and evaluated the spatial structure by three steps: (1) to clarify the existing land mosaic pattern by land use mapping (2) to estimate the pore size as development area in matrix (3) to investigate the funnel effect of patch shape. These landscape ecological steps and frameworks could be applied for the proper methodology as fundamentals of eco-village planning and design.
Ecological Characteristics of Lycoris radiata with Habitat Types
Lee, Jeom-Sook ; Ihm, Byung-Sun ; Kim, Ha-Song ;
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 247~250
DOI : 10.5141/JEFB.2003.26.5.247
The investigation of ecological characteristics of Lycoris radiata was carried out in flooding (site I), half flooding (site II) and dry stands (site III). Seasonal change of air temperature showed similar patterns and that of light intensity showed quite difference among three L. radiata stands. Seasonal change of soil water content showed a great difference among three L. radiata stands. The study area was dominated by Pinus densiflora, P. thunbergii and L. radiata communities. The number of bulb in 1. radiata increased in September with bulb formation and decreased in January. Bulb weight in L. radiata was different from each site. The numbers of blossom were 23, 13 and 9, respectively in site I, II and III. The length of wreath were 17.0, 13.0 and 11.0cm, respectively, the length of stamen were 7.0, 6.4 and 6.5 cm, respectively and the length of stalk were 60.0, 45.0 and 42.0 cm, respectively in site I, II and III. The leaf of L. radiata developed rapidly in site I with sufficient water supply and lower light intensity, the number and the length of rootlets increased considerably in site III with insufficient water supply and higher light intensity, and the ecological characteristics in site II was intermediate between site I and site III. There was no great difference between the numbers of rootlets in site I and site II, which were due to sufficient water supply in two stands.
Strategy to Control Surface Fire using Vegetational Fire Breaks in Rangelands of Nilgiris, Southern India
Paulsamy, S. ; Kil, Bong-Seop ; Arumugasamy, K ; Padmathy, S. ;
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 251~254
DOI : 10.5141/JEFB.2003.26.5.251
To control the spread of surface fire in the rangelands and to check the entry of fire into forest systems from grassland patches, 26 evergreen / succulent species were selected and among them 3 shrubby species such as Berberis tintoria Lesch, Elaeagnus kologa Schlecht and Rhodomyrtus tomentosa Wt. were screened for vegetational fire breaks on the basis of leaf moisture content and some other ecological characters. The fire trail experiments indicate that crossing of fire was checked by the fire belt size of 5
1.5m for all the three species. However, due to higher fire retardant capacity, the Ire belt of R. tomentosa was effective in comparison to other two species.
Structural Characteristics and Maintenance Mechanism of Ulmus pumila Community at the Dong River, Gangwon-do, South Korea
Choung, Heung-Lak ; Kim, Chul-Hwan ; Yang, Keum-Chul ; Chun, Jae-In ; Roh, Huan-Chuen ;
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 255~261
DOI : 10.5141/JEFB.2003.26.5.255
To analyze ecological characteristics of the Ulmus pumila community, an on-the-spot survey was conducted in August, 1998 in the Dong River, Gangwon-do, South Korea. The Ulmus pumila community is partially distributed in Dong River's midstream and upper stream. Topographical characteristics of this community are significant in the point bar or sandbank of the river. The community is classified into two types, disturbed and non-disturbed types, by the effect of flooding. The Ulmus pumila community (bush forests of Siberian elms) is a representative community which forms riparian forests, but its distribution is rare in South Korea. Only in Dong River is the Ulmus pumila distributed enough to form a community, and none is known that is lager than this community in South Korea. The non-disturbance type progresses more homogeneously than the disturbance type because it is formed on riverside banks where it is affected less by flooding. We concluded that the Ulmus pumila community in this study area has characteristics of riparian forests. In South Korea, Ulmus pumila community can be regarded as important element of vegetation landscape constituting riparian forests. Specifically, these riparian forests are evaluated as high in conservation value due to their being formed spontaneously. Moreover, Dong River is regarded as the southern limit of Ulmus pumila, which has a northern origin. The species or community needs continuous interests and conservation countermeasures because there are limitations in its spread of distribution by natural or artificial efforts.
Purification and Characterization of PC-Like Cadmium-Binding Peptide from Root of Rumex crispus
Chang, Ju-Youn ; Lee, In-Sook ; Park, Jin-Sung ; Chang, Yoon-Young ; Bae, Bum-Han ;
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 263~266
DOI : 10.5141/JEFB.2003.26.5.263
This research investigated the process of removing cadmium and tested the detoxification mechanism of the cadmium-binding peptide (Cd-BP) from Rumex crispus. Phytochelatin-like cadmium-binding peptide (PC-Cd-BP) of Rumex crispus was purified and identified. Rumex crispus was exposed to 4.3 mg Cd/L for seven days. Heat-treated supernatant fraction taken by root tissues showed traces of PC-Cd-BP An analysis of the material through Gel-filteration chromatography on the Sephadex G-75 column showed two symmetrical Cd-BP peaks. The major peak with the smaller molecular weight was further purified by
reverse-phase HPLC to produce apparent homogeneity. The amino acid composition of Cd-BP from Rumex crispus included cysteine (22.6%), glutamate and glutamate acid (20%), and glycine (12%). It was similar the amino acid composition of most PC. The molecular weight of the purified peptide was determined at 568-706 Da by MALDI-TOF MS. Therefore, the Cd-BP of Rumex crispus was PC-Cd-BP consisting of isopeptides.
Comparison of Pigment Content and Photosynthetic Capacity of Quercus mongolica Stands at Namsan, Seoul and Paekcheoksan, Kangwondo
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 267~271
DOI : 10.5141/JEFB.2003.26.5.267
To elucidate effects of air pollutants on ecophysiological properties of two Quercus mongolica stands at different levels of air pollution, photosynthetic capacity and chloroplast pigment were measured in leaves of Q. mongolica. Photosynthetic capacity, photosynthetic pigment content and SLA (specific leaf area) of Q. mongolica leaves in polluted area were lower than those in nonpolluted area. Also, the chlorosis and mottling in some of leaves were observed in polluted area after August. Except for total carotenoid (P<0.05) the correlations between photosynthetic capacity and pigment content were not significant. Photosynthetic capacity of Q. mongolica leaves in polluted area was decreased after July.
The Responses of Antioxidative Enzymes and Salt Tolerance of Atriplex gmelini
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 273~280
DOI : 10.5141/JEFB.2003.26.5.273
Saline conditions invoke oxidative stress attributed to the overproduction of reactive oxygen species (ROS). Changes in quantum efficiency and antioxidative enzyme activity upon salt treatment were examined in a salt-tolerant plant, Atriplex gmelini, to test the hypothesis that salt tolerance of A. gmelini is due to the increased activity of antioxidative enzymes. A. gmelini showed optimum growth at 100 mM NaCl producing 116% of the shoot dry weight over control plants in 0 mM NaCl treatment. Healthy growth persisted up to 300 mM NaCl treatment maintaining normal internal water content and dry weight. No photochemical stress or damages on antioxidative defense system was obvious in plants of 2 and 4 day salt treatment which was indicated by increased quantum efficiency (Fv/Fm value), decreased stress index (Fo/Fm value), and increased activity of antioxidative enzymes such as SOD, APX, GR. However, the plants treated with 400 mM NaCl showed decrease in growth and in antioxidative enzyme activity although the enzyme activity was still higher than that of the 0 mM NaCl treated plants (l31%, 114%, and 134% of the SOD, APX, and GR activity, respectively). Interestingly, another important antioridative enzyme that scavenges H₂O₂ in plant cells, CAT, showed rapid decrease in its activity as salt concentration increased; 38%, 22%, 15% of the 0 mM NaCl treated plants at 200, 300, 400 mM NaCl treatments, respectively. It appears that the enzymes in ascorbate-glutathione cycle such as APX and GR play the major roles in scavenging ROS produced by salt stress in A. gmelini. After 6 days of salt treatment, the damage in photochemical and antioxidative defense system was indicated by decreased Fv/Fm value and increased Fo/Fm value. A. gmelini appears to cope with short term salt treatment by enhanced activity of the antioxidative defense system, whereas long term stress invoke oxidative stress by increased ROS due to the damages in photochemical and antioxidative system.
Vegetation of Moojechi Moor in Ulsan: Syntaxonomy and Syndynamics
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 281~287
DOI : 10.5141/JEFB.2003.26.5.281
We present the first analysis of moor vegetation on the Moojechi of Ulsan including syntaxonomy and syndynamics. We classified plant communities according to the Braun-Blanquet approach. In order to better understand ecological alteration processes and changing species compositions along successional gradients we also examined synecological differences using Principal Coordinate Analysis(PCoA) in terms of moisture gradient, species richness, and community structure. Classification resulted in one association and five plant communities occupying distinct moor habitats: Hypericum laxum-Eleocharis acicularis for. longiseta community, Drosera rotundifolia-Eleocharis congesta community, Platanthero-Molinietum japonicae ass. nova hoc loco, Molinia japonica-Alnus japonica community, Miscanthus sinensis-Pinus densiflora community, and Convallaria keiskei-Quercus serrata community. Due to synecological correspondences and floristic similarities in supraregional perspective, Platanthero-Molinietum can be assigned to existing higher syntaxonomic units of Molinion and Molinietalia in Braun-Blanquet system, established in Japan. We propose to extend their range and designate the new class Molinietea japonicae representative to the intermediate moor (Zwischenmoor) vegetation in Northeast Asia. PCoA resulted in four types showing a sequencess of succession: Needle spike-rush type, moor-grass type (incl. alder forest type), eulalia type, and oak forest type. A combination of edaphic conditions (soil eutrphication and soil moisture) and hydrologic patterns of moor ecosystem related to topography, occurring as result of external geophysical forces, controls inter alia spatial patterns and floristic compositions of moor plant communities.
Method for Assessing Forest Carbon Sinks by Ecological Process-Based Approach - A Case Study for Takayama Station, Japan
Lee, Mi-Sun ;
The Korean Journal of Ecology, volume 26, issue 5, 2003, Pages 289~296
DOI : 10.5141/JEFB.2003.26.5.289
The ecological process-based approach provides a detailed assessment of belowground compartment as one of the major compartment of carbon balance. Carbon net balance (NEP: net ecosystem production) in forest ecosystems by ecological process-based approach is determined by the balance between net primary production (NPP) of vegetation and heterotrophic respiration (HR) of soil (NEP=NPP-HR). Respiration due to soil heterotrophs is the difference between total soil respiration (SR) and root respiration (RR) (HR=SR-RR, NEP=NPP-(SR-RR)). If NEP is positive, it is a sink of carbon. This study assessed the forest carbon balance by ecological process-based approach included belowground compartment intensively. The case study in the Takayama Station, cool-temperate deciduous broad-leaved forest was reported. From the result, NEP was estimated approximately 1.2 t C
in 1996. Therefore, the study area as a whole was estimated to act as a sink of carbon. According to flux tower result, the net uptake rate of carbon was 1.1 t C