• Korean Journal of Environment and Ecology
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• v.23 no.4
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• pp.353-364
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• 2009

This study was conducted to evaluate the effect of erosion control works on the stream ecosystem in a mountain torrential stream. The species composition of benthic macroinvertebrates and biological water quality were investigated before and after construction of erosion control works at 5 sites. The total number of benthic macroinvertebrates before construction was 3,086 individuals including 4 phyla, 6 classes, 11 orders, 22 families, and 25 species, but after construction it has decreased to 1,208 individuals including 4 phyla, 6 classes, 10 orders, 17 families, and 19 species. Especially, the diversity, richness, and evenness indices, which were calculated based on existing number of biological species, have decreased or not produced at the erosion control sites, where biological species were not found or the minimum number of species were found. The results of community analysis of benthic macroinvertebrates and ESB(Ecological Score of Benthic macroinvertebrate community) indicated that the environmental qualities of the stream based on saprobity, environmental condition, and water quality decreased after the construction at all sites: before construction, the top of the stream was satisfactory and some satisfactory, the middle was some defectiveness, and the lower was defectiveness and very defectiveness; after construction, all parts of the stream except some parts of the top were very defectiveness. Moreover, the water quality of torrential stream was rated between I to III before construction, but after construction, it declined to $IV{\sim}V$ except control. The habitat damage of benthic macro invertebrates occurred at all investigation sites after the construction of erosion control works led to reduction of the number of biological species and water quality deterioration. The results reported in this study were collected directly after the construction of erosion control works. Therefore, additional studies are needed to further explore the effect of disaster-prevention of erosion control works and the recovery process of stream ecosystem through long term monitoring.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.33 no.12
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• pp.24-31
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• 2004

조선조 작업장 및 자동차 조립공장과 같은 초대형 작업공간의 작업환경을 개선시키기 위한 환기시스템 시공사례에 대해서 설계, 시공, 성능검증 및 완공으로 이어지는 일련의 진행과정을 소개하고자 한다.

• 보일러설비
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• s.52
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• pp.78-89
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• 1998

건축물의 성에너지화와 고내구화, 거주공간의 쾌적성 향상을 꾀하고 건축이 지구환경 보전에 기여하기 위해서는 건물의 단열과 방습을 주도하는 기밀화는 빼놓을 수 없는 관건이다. 따라서 여기에서는 주로 성에너지성이 높은 주택을 설계$\cdot$시공하는 경우에 필요한 단열과 방습의 종류와 특징, 각 재료의 설계, 시공상의 포인트에 대해 설명한다.

• Journal of the Korea Institute of Building Construction
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• v.11 no.2
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• pp.189-199
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• 2011

Installation of a proper root barrier in a green roof system is very important in order to protect the concrete slab of roof and the root penetration in the waterproofing layer. To select the proper root barrier materials and methods, it is necessary to understand the environmental conditions affecting the waterproofing-root barrier system in green roof construction site. Therefore, we suggested as the environmental performance indexes four kinds of performance requirements; root penetration, chemical attack by chemical agent or fertilizer, load impact by soil depth and size of plant, and water pressure. The related four test methods were suggested for the inspection of these performance indexes. In this research, we could suggest for kinds of test methods as standard test methods to evaluate the environmental performance of waterproofing-root barrier for greening roof system.

• Bulletin of Korea Environmental Preservation Association
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• v.6 no.12
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• pp.29-31
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• 1984

• Bulletin of Korea Environmental Preservation Association
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• v.6 no.17
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• pp.28-31
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• 1984

• Bulletin of Korea Environmental Preservation Association
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• v.6 no.10
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• pp.38-39
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• 1984

• Bulletin of Korea Environmental Preservation Association
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• v.6 no.7
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• pp.32-33
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• 1984

• Bulletin of Korea Environmental Preservation Association
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• v.6 no.8
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• pp.30-32
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• 1984

• Bulletin of Korea Environmental Preservation Association
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• v.6 no.21
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• pp.27-30
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• 1984