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2019, Vol.28, No.4

  • 1.

    Vascular Plants Distributed in Ridge of the Northernmost Baekdudaegan Mountains(Hyangrobong~Guryongryeong)

    Oh, Hyun-Kyung | You Ju Han | 2019, 28(4) | pp.347~372 | number of Cited : 0
    Abstract PDF
    The purpose of this study is to provide the basic data for management of the ecosystem of Baekdudaegan Mountains by surveying and analysing the vascular plants distributed from Hyangrobong area to Guryongryeong area. The numbers of vascular plants in the whole survey areas were summarized as 633 taxa including 95 families, 321 genera, 549 species, 4 subspecies, 70 varieties, and 10 forms. There were 285 taxa in Hyangrobong area, 256 taxa in Masanbong area, 318 taxa in Mt. Seoraksan area, 281 taxa in Mt. Jeombongsan area, 173 taxa in Bukamryeong and Ohsaekcheon valley area, 197 taxa in Soenadeuri area, 203 taxa in Yeongarigol area, and 168 taxa in Guryongryeong area. The endangered species were 2 taxa including Leontice microrrhyncha and Smilacina bicolor. The rare plants were 39 taxa including Pinus pumila, Halenia corniculata, Juniperus chinensis var. sargentii, and so forth. In IUCN Red List categories, there were 2 taxa of CR, 7 taxa of EN, 10 taxa of VU, 18 taxa of LC, and 2 taxa of DD. The Korean endemic plants were 23 taxa including Salix koriyanagi, Anemone koraiensis, Lespedeza maritima, Cirsium setidens, Saussurea seoulensis, Carex okamotoi, and so forth. The plants adaptable to climate change were 48 taxa including 17 taxa of endemic plants, 1taxon of southern plant, and 30 taxa of northern plants. The naturalized plants were 32 taxa including Fallopia dumetorum, Cerastium glomeratum, Papaver rhoeas, Bidens frondosa, Lolium perenne, and so forth.The invasive alien plants were 3 taxa including Rumex acetocella, Ambrosia artemisiifolia, and Ambrosia trifida.
  • 2.

    Assessment of water quality in the Miho stream using Multivariate statistics

    윤혜영 | Jeehyun Kim | Min-Hee Chae and 2other persons | 2019, 28(4) | pp.373~386 | number of Cited : 0
    Abstract PDF
    In The study, is to investigate the spatial characteristics of the Miho stream, which is the main tributary of the Geum River system, and to identify the main factors influencing the water quality using water quality analysis and multivariate analysis. The survey subjects were selected as 7 main sites in the Miho stream water system, From 2012 to 2017, 16 items including weather temperature and weather data were used for multivariate analysis. As a result of the water quality analysis, the average concentration of BOD and COD for 6 years was 3grade (normal) compared with the water quality environmental standard (river) of conditions. The concentrations of nitrogen and phosphorus were highest at th upstream site, then decreased and then increased again by the hydrogeological and geomorphological effect. Cluster analysis of spatial and water quality characteristics, it was evaluated as three clusters and the pollution sources is the greatest impact. As a result of principal component analysis and factor analysis on each cluster and mainstream, three to four major components were extracted. Main stream and the Cluster 1, Cluster 3 first principal factor included nitrogen and seasonal factors, first factor of Cluster 2 included nitrogen and water temperature. Nitrogen is the principal factor which affects water quality in Miho stream.
  • 3.

    Deterioration Evaluation Method of Noise Barriers for Managements of Highway

    Sang Tae Kim | 신일형 | 김경수 and 4other persons | 2019, 28(4) | pp.387~399 | number of Cited : 0
    Abstract PDF
    This research aimed to prepare the classification of the damage types and the damage rating system of noise barriers for expressway noise barriers and to develop deterioration evaluation method of noise barriers by reflecting them. The noise barrier consists of soundproof panels, foundations and posts and the soundproof panels with 10 different types of materials are used in a single or mixed form. In this paper, damage of soundproof panel shows a single or composite damage, and thus a evaluation model of deterioration has been developed for noise barriers that can reflect the characteristic of noise barriers. Materials used mainly for soundproof walls were divided into material types for metal, plastic, timber, transparent and concrete. And damage types for noise barrier were classified into corrosion, discoloration, deformation, spalling and dislocation and damage types were subdivided according to the noise barrier’s components and materials. Damage rating was divided into good, minor, normal and severe for each major part of noise barrier to assess damage rating of soundproof panel, foundation and post. The deterioration degree of noise barrier was evaluated comprehensively by using the deterioration evaluation method of whole noise barrier using weighted average. Deterioration evaluation method that can be systematically assessed has been developed for noise barrier using single or mixed soundproof panel and noise barrier with single or complex damage types. Through such an evaluation system, it is deemed that the deterioration status of noise barrier installed can be systematically understood and utilized for efficient maintenance planning and implementation for repair and improvement of noise barriers.
  • 4.

    Evaluation and Improvement of EIA Information Disclosure System - Focused on the Aarhus Convention -

    Namwook Cho | LeeMoungJin | 최준규 | 2019, 28(4) | pp.400~412 | number of Cited : 1
    Abstract PDF
    The process of assessing environmental values and impacts is subjective and depends on predictions, limiting the securing of scientific rationality. Therefore, it is necessary to make a supplement by securing procedural rationality. This study has been tried to secure procedural rationality of EIA based on information disclosure system. The Aarhus Convention is an international treaty that defines the right of the public to access to environmental information and to participate in decision-making. This study evaluates Korean EIA information disclosure system by deriving 10 indicators based on the provisions on information disclosure presented in the Aarhus Convention. As a result, the five indicators were satisfied in terms of direction of information disclosure and provision. And the four indicators for the basis of utilization and process are required to be supplemented by detailed regulations. Finally, we derive the need for research on the asymmetry of expertise and acceptability of EIA system through public understanding indicators.
  • 5.

    Changes in SO2 pollution by clustering of individual location factories scattered throughout Gimpo city

    김희석 | 2019, 28(4) | pp.413~426 | number of Cited : 0
    Abstract PDF
    Many factories indiscriminately located in the vicinity of residential areas need to be adjusted to quasi-industrial parks or new planning management area. In the present work, the changes of atmospheric SO2 concentration according to clustering of individual location factories throughout Gimpo city into a new area were evaluated using a commercial dispersion model, AERMOD. As a result of the evaluation, it was suggested the possibility of improving the pollution through the relocation of individual factories. The combination of relocation and discharge regulation on the stack height may reduce the overall pollution from Gimpo approximately up to 70%, and some areas achieve maximum 87% decrease. However, the area selected as a cluster zone may show a relatively large increase compared to the change in the total pollution level of Gimpo.