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본 연구에서는 경남 거제시 구천 천을 대상으로 생태하천 조성공사의 시공 성을 분석하고 평가하였으며 다음과 같은 결론을 얻을 수 있었다. 첫째, 구천 천 생태하천 조성공사의 시공 성 평가를 위한 평가지표를 설정하였다. 일반적인 공사품질 평가항목에 본 연구대상지의 공사특성을 감안하여 설계품질과 건설행정부문을 더하여 평가지표를 설정하였다. 크게 대 분류로 공사 품질, 설계품질, 건설행정으로 나누었으며, 중분 류로는 식 재, 시설물, 포장, 급배수공사, 설계 전 문성, 설계도서, 기술시방서, 공사기간, 적정 비용, 참여자인식 등 10개 유형으로 구분하고 소 분류의 평가항목은 해당공사의 세부적 내용으로 구성된 총 20가지로 구성하였다. 둘째, 시 공성 평가결과, 평가항목별로는 급 배 수공사, 석재공사, 포장공사, 식재공사 순으로 시 공성 개선의 필요성이 제기되었으며, 평가 대 상으로는 묵논습지 조성공사와 완경사 저수 호 안공사에서 시 공성이 낮게 평가되었고 수달서 식 처와 자연경관보전 구간은 비교적 적정한 것으로 평가되었다. 설계도면의 누락과 기술시방 의 문제, 시공참여자의 인식문제에 대해서는 개선필요성이 다소 있는 것으로 나타났으나, 설계 개념의 적정성 부문은 참여기술자의 대부분이 적정한 것으로 평가하였다. 셋째, 문제점에 따른 개선방안 제시로서, 품 질 관리에 의해 개선될 수 있는 사항으로 무논 습지조성에서의 유입 수, 유출 수 연결 관의 마감 처리, 논흙처리에 대한 방안과 하천에서의 저수 호 안 돌 쌓기 시공성과 석재공사의 마감처리 등 이 있으며, 동 분야의 기술적 한계점으로서 연 구가 필요한 부분으로는 생태수로의 돌 쌓기 이 음 새 부분의 콘크리트 몰탈처리와 천변수림대 의 폭 원 설정 등을 들 수 있다. 하천 코 리더의 생태적 역할을 수반하는 천변수림대의 폭 원 및 식생의 기능에 대한 연구는 향후 하천 변 생태 복원공사의 기술력 향상을 위한 현실적 대안이 될 수 있을 것이라 판단된다. 그 이외에도 시공 과정에서 설계자와 지속적인 논의와 피드백 과 정이 필요한 속성을 가진 공사라고 판단되며 향후 생태복원공사의 전반에 걸친 시공 성 평가 의 기법이 지속적으로 개발되어야 하겠다. In this study, constructability of ecolog ocal stream restoration process was evaluated and improved approaches for habitat were suggested. The study site is Gucheon River in Geoje city where conducted ecologocal restoration work within maintaining its flood control function. Application of ecological design factors and constructability in the process from planning to construction was analyzed and its results are as follows: In the process of planning and designing, it was focused more on the naturality of Gucheon River rather than the human convinience and ecological design factors were applied within the ecological capacity of the site. First, the indexes for constructability evaluation is selected. It was classified into three major categories as construction quality, design quality and construction administration system. Each index has details, so there are twenty sub indexes for contractibility evaluation. Second, the evaluation results shows that the index most in need of improvement was plumbing construction, followed by Stone construction and pavement construction. design concept was evaluated as appropriate in entire categories. Finally it is suggested that it can be improved in both process of design to enhance the technology and process of construction to enhance the quality management. The constructability of ecological stream needs adaptive management and it must be discussed with its designing which is at the stage before construction. Also it needs discussion with its designer constantly and feed-back process.
Six pine trees (Pinus densiflora S. et Z.) at the Euilimji Lake Park in Jecheon were collected to investigate tree ages, growth decline pattern and the years of death. Tree-ring measurement was carried out using the Lintab with a resolution of 0.01mm. Tree age were 80-176 years. Cross-dating between the tree-ring series of each tree and the local chronology from Worak Mountain resulted that four and two trees died in 1998 and 1999, respectively. Three dead trees had only formed earlywood in the outermost tree ring and the others had incomplete latewood. Therefore, it was proven that the former trees died between spring and early summer, whereas the later ones died during late summer and/or autumn. The simultaneous deaths of trees suggest the insect damage and/or drought may be the crucial reason of the death, but frequent reaction woods, which were formed by leaning stem, and scars formed by physical damage may also contribute to the death.
This study was conducted to obtain the basic research about Siberian roe deer (Capreolus pygargus), and to establish a conservation area into Seoraksan(Mt.) National Park, South Korea. We recorded Siberian roe deer field signs (bedding sites, feeding areas, feces and tracks etc), and habitat variables such as nearest distance to the watercourse, trails, slope, aspect, forest type and land cover etc. from Jan. 2006 to Dec. 2007 in Seoraksan(Mt.) National Park. According to the research of habitat characteristics of Siberian roe deer inhabited in Seoraksan(Mt.) National Park preferred mixed forest consisted of aged forest and middle-aged forest on the gentle slope which was close to hydrosphere in the middle elevation area of altitude of 400~600m above sea level in Seoraksan(Mt.) National Park. The results indicated that Siberian roe deer appeared to prefer south slope or north slope during the snow season and west or east slope during the non-snow season. The area of most suitable habitat for Siberian roe deer in Seoraksan(Mt.) National Park was 125.8km2 (32% of the total area) followed by 244.3km2 buffer area (62.2% of the total area), and 22.9km2 unsuitable habitat area (5.8% of the total area), which means environmentally unsuitable habitat for Siberian roe deer was rare in Seoraksan(Mt.) National Park. Thus, the area classified as major area in Seoraksan(Mt.) National Park appeared to be most important for the protection of Siberian roe deer.
Since the government of Korea (Ministry of Environment, MOE) introduced the policy applying ``Biotope-Area-Ratio-Indicator (BARI)`` to huge residential land developments which Environmental Impact Assessment (EIA) should be performed, MOE has come to have the necessity to apply the indicator concretely at the stage of Prior Environment Review System (PERS) and EIA in various types of large scale land development projects. This study was conducted with the aim of supporting the application of BARI and related decision making in various other types of EIA projects as well as residential development projects through remodeling the system to apply the indicator of the past. Through the analysis of the problems in applying the past BARI and experimental appraisals to 11 types of EIA projects, the results and implications as follows were drawn. First, it`s possible to extend the range of applications of BARI, which has been applied to only residential land development project, to all kinds of projects with area-typed land use pattern out of environmental impact assessment target projects. Second, it`s also possible to set a target value into which regional characteristics and differences among locational properties are reflected. In addition, it`s come to be able to differentially apply the target value of BARI according to the condition of the existing site. Third, it`s improved to be able to suggest a macroscopic target value at the stage of PERS and to set detailed target values in each detailed land use at the stage of EIA. The key point underlies inducing methodology to determine target values to secure more permeable land coverage ratio for detailed land use patterns at the stage of EIA by making it possible to calculate BARI of the present land cover condition of the EIA target projects.
박진한 ( Jin Han Park ),이동근 ( Dong Kun Lee ),Tanaka Riwako,김정택 ( Jung Taek Kim ),전성우 ( Seong Woo Jeon ),이우균 ( Woo Kyun Lee ),김준순 ( Joon Soon Kim ),정태용 ( Tae Young Jung ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2014 한국환경복원기술학회지 Vol.17 No.1
In Korea, a cooperation charge on conservation of ecosystem is imposed to prevent indiscriminate development. The total amount of this charge is determined by multiplying the size of the destroyed area by a value per unit area and the area index within 5 billion won. Since 2001, the charge per unit area has been determined to be 250 won/m2. In this study, we estimated the unit value of ecosystem services per year using benefit transfer method, with a focus on forest resources. According to our results, forest resources have a value of about 3,500 won/m2 per year. When the non-use value is subtracted, that figure becomes approximately 1,300 won/m2. If this value incorporates the unit value of the cooperation charge on conservation of ecosystem, it will increase. To comply with the original intent of the cooperation charge on conservation of ecosystem, the fund must be used to improve ecosystem services, including the restoration of a destroyed area or the purchase of new land.
This study aims at analyzing the development status of surroundings of natural environment conservation areas and securing an adequate distance from development activities to conserve natural environment conservation areas efficiently or developing an improvement plan for setting conservation areas. Findings from the study shows that 1) rather than simply designating a legal natural environment conservation area, a conceptual scope approach of a “core area”, “buffer area”, and “transition area” such as in zoning of a “biosphere reserve” by UNESCO is recommended; 2) when setting an adequate range in a natural environment conservation area, it should be set by fully considering locational situation and the regional and environmental features of surroundings rather than setting a certain distance uniformly; 3) instead of designating wetlands only as a conservation area, entry and exit areas should be also included as buffer areas and in the case of wild animals, not only habitats but also feeding areas should be designated as conservation areas; and 4) an adequate horizontal separation space is important in the case of ground development, but for natural resources related to subterranean water and geological situation such as wetlands, an adequate vertical separation space should be fully considered.
To investigate the air temperature difference between windward and leeward side at high-rise building area, the air temperature and relative humidity data were observed for 10 minute interval from July 9, 2011 to November 30, 2011. The observed data were compared, analyzed and examined to illustrate air temperature between windward side (H Apartment) and Leeward side (W Apartment). The diurnal and seasonal variation of air temperature difference between windward and leeward site were also investigated. After the analysis, the overheat of windward side by 0.4℃ irrespective short distance of two observation positions. It was also lower than those of surrounding air temperature observing stations. It is mainly due to the air temperature decreasing effects of leeward side of high rise buildings.
In this study, wetlands and forest vegetation surrounding rail, road of DMZ area and Civilian Control Line were studied as follows: Plant communities hierarchical system of forest vegetation classified according to the results of phytosociological methods of Braun-Blanquet (1964) as; Quercus mongolica community, Quercus mongolica-Quercus variabilis community and Quercus acutissima-Quercus mongolica community. Wetland vegetation major communities; Scirpus wichurae community, Scirpus fluviatilis community, Juncus effusus var. decipiens community, Typha orientalis community, Typha angustata community, Juncus alatus community, Miscanthus sacchariflorus community, Phragmites communis-Miscanthus sacchariflorus community, Hragmites communis community, Phragmites communis-Alnus japonica community, Alnus japonica community, Phragmites japonica community, Salix koreensis community, Prunus padus community, Alnus japonica community, Zizania latifolia community and Amorpha fruticosa community were surveyed. Coastal sand dune vegetation in a DMZ area and the Civilian Control Line was mainly characterized by; Carex pumila, Elymus mollis, Carex kobomugi, Rosa rugosa, Calystegia soldanella, Lathyrus japonica and Aster hispidus, species that are of typically sand dune vegetation.
This study was performed to compare the effects of different drainage layers on tree growth at the exposed sites of Saemangeum sea dike. 4 types of drainage layers including control(dredged soil), specially prepared bark, gravel, and wood chip were set in 150~165cm depth of soil. Pinus thunbergii and Celtis sinensis were planted after 9 months of soil treatment. Electrical conductivity(EC) of soil in all treated plots were decreased under 4dS?m-1, and NaCl(%) was decreased under 0.05% after 1 year from soil treatment. Soil moisture at the 120cm depth of the bark treated plot was higher than that of the 180cm soil depth, below the drainage layer. It is considered that vertical mobility of water was inhibited. Organic matter(OM) at the 120cm soil depth increased at bark and wood chip treated plots. Survival rates after 4 years of P. thunbergii and C. sinensis were 100% in all treatments. The height of P. thunbergii was not significantly different among the treatments while the height of C. sinensis was significantly different among the treatments and it was highest at the bark treated plot.
This study aims to examine a significant difference in performance of, and attitudes towards, environmental tourism among domestic tourism companies by their types and scale, and to propose a policy direction for a new certification program on environmental tourism. This study conducted a survey with 152 tourism accommodations and 150 travel agencies. As a result, this study found that tourism accommodations and a large scale of companies had participated in environmental management practices more often than travel agencies and a small scale of companies. Also, tourism accommodations were more likely to recognize well a relation between their business and environmental tourism, and were more likely to participate in a new certification program than travel agencies. A large scale of tourism accommodations showed more positive attitudes towards environmental tourism than a small scale of tourism accommodations. On the other hand, all of the travel agencies showed less positive attitudes towards environmental tourism regardless of their size. In conclusion, this study proposed that the government should adopt a different approach to a new certification program according to tourism companies` types and scale, also it should provide a variety of incentives and supports for tourism companies.