• 한국물환경학회지
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• 제32권2호
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• pp.205-215
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• 2016

In order to improve water quality in the Paldang Lake, a riparian vegetation belt, treatment wetland, and artificial floating island were designed for introduction in the upland field, the estuary of tributaries, and the section of water facing mountainous land, respectively. We synthesized vegetation information collected from a reference river and found that herbaceous, shrubby, and tree vegetation zones tended to be dominated by Phragmites japonica, Phalaris arundinacea, etc.; Salix gracilistyla, S. integra, etc.; and S. koreensis, S. subfragilis, and Morus alba, respectively. In our plan, the herbaceous vegetation zone, which is established on floodplains with a high frequency of disturbance, will be left in its natural state. A shrubby vegetation zone will be created by imitating the species composition of the reference river in the ecotone between floodplain and embankment. A tree vegetation zone will be created by imitating species composition on the embankment slope. In the treatment wetland, we plan to create emerged and softwood plant zones by imitating the species composition of the Zizania latifolia community, the Typha orientalis community, the P. communis community, the S. integra community, and the S. koreensis community. The floating island will be created by restoring Z. latifolia and T. orientalis for water purification purposes.

• 한국환경복원기술학회지
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• 제8권1호
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• pp.63-72
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• 2005

Chirisan National Park, the first and largest one out of 20 national parks in Korea, is divided into five zones. They are composed of nature preservation zone, natural environment zone, natural residential zone, concentrated residential zone, and collective facility zone. However, the park is not a continuous habitat: roads, trails, local residences, and various facilities created the habitat mosaics severely fragmented. We investigated the fragmentation pattern of the park due to roads and mountain trails using GIS. Based on perimeter length, area, and the ratio of perimeter to area of each patch, we obtained landscape analysis indices which reflect the regularity of the patch shape. The 1 m-wide hiking trails divided the park into 491 fragments. The legal trails with 1.5 m - 3 m width which have been heavily used by hikers generate 58 fragments. Even the nature preservation zone, corresponding to a core zone comprising 31.8% of the park area, was divided into 37 fragments because of the roads and mountain trails. With the different widths of buffer applied, the core sizes of the fragments were reduced. When the 60 m buffer was applied, the patch interior areas ranged from 0.0001 to 47.77 $km^2$ with a mean of 7.08 $km^2$. The landscape shape indices were far greater than 1 for most of the cases with a maximum value of 25. These results clearly indicate that Chirisan National Park is not a continuous habitat, but mosaics of small, irregularly shaped habitat fragments. It is necessary to take the size and shape of the fragmented habitats into consideration when nature conservation is planned, especially for large wildlife such as brown bears.

• 농업생명과학연구
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• 제46권4호
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• pp.69-84
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• 2012

본 연구는 대구지역 공 사유림 내 산림습원의 식생구조와 분포를 파악하기 위하여 보존가치가 있는 산림습원의 발굴 및 보전, 향후 체계적인 관리방안을 수립하는데 기초자료를 제공하기 위함에 있다. FGIS를 이용하여 예상 지점을 도출하고, 산림습원의 보호를 위한 완충구역을 설정하였다. 산림습원으로 판별된 11개 지점을 층위별로 구분하여 분석한 결과, 63과 131속 148종 2아종 14변종 5품종으로 총 169분류군의 식물이 출현하였다. 산림습원의 종다양도는 관목층에서 1.560으로 가장 높게 나타났고, 균재도는 관목층에서 0.913로 가장 균일한 상태를 나타냈으며, 교목층, 아교목층, 관목층 모두 0.3이하로 나타나 한 종이 우점하지 않고 층위별로 다수의 종이 공존한다는 것을 알 수 있었다. 완충구역은 습지의 종류, 지형 등을 고려하여 핵심지역 경계부로부터 20~50m로 설정하였다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2006년도 학술발표회 논문집
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• pp.678-682
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• 2006

In order to analyze movement of soil moisture, Time Domain Reflectometry(TDR) with multiplex system has been installed at the Bumreunsa hillslope of Sulmachun Watershed to configure spatial-temporal variation pattern considering seasonal characteristic. An intensive surveying was performed to build a refined digital elevation model(DEM) and flow determination algorithms with inverse surveying have been applied to establish an efficient soil moisture monitoring system. Soil moisture data were collected through an intensive and long term monitoring 380 hrs in November of 2003 and 1037 hrs in May and June of 2004. Soil moisture data shows corresponding variation characteristics of soil moisture on the up slope, buffer, main channel zones of the hillslope which were classified from terrain analysis. Inferences and limitations of measured soil moisture data were discussed in conjunction with flow characteristic through terrain analysis.

• 한국조경학회지
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• 제32권6호
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• pp.23-35
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• 2005

Korean goral (Nemorhaedus caudatus raddeanus) is an endangered species in Korea, and the rugged terrain of the Sorksan National Park $(373km^2)$ is a critical habitat for the species. Since the goral population is threatened by habitat fragmentation, it is essential to establish a reserve for the isolated goral population. The objective of this study was to propose a reserve for Korean goral in the national Park We employed habitat suitability model, habitat capability model, and the concept of minimum viable population. The results of the study were as follows. First, the carrying capacity and optimal density of gorals in the national park were projected to be 449 gorals, and 251 gorals, respectively Second, since only one patch was projected to satisfy the criteria of minimum viable population (50 individuals/during 50 years), the long term extinction possibility of gorals in the site would be very high. Finally, the patch that satisfy the minimum viable population of goral was proposed as the core zone of the goral reserve and adjacent patches were included as buffer zones.

• Journal of Ecology and Environment
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• 제34권3호
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• pp.269-278
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• 2011

Carabid beetle community changes in paddy fields, abandoned paddy fields, and mountains were investigated to understand differences in species diversity and composition of different habitat types in small agricultural landscapes in South Korea. A total of 2,938 individuals from 37 species were identified and classified from the studied habitats. Diversity in the mountains was higher than that in abandoned paddy fields. As the number of years since abandonment increased, the diversity and stability of the carabid beetle community also increased. Abandoned paddy fields in some paddy field areas and adjoining mountainous areas, left with preconditions for management and control, have provided the opportunity to improve the diversity and habitat of small agricultural landscapes. Species composition changed continuously from the paddy fields to the mountains, in accordance with individual species habitat preferences. Abandoned paddy fields in small agricultural landscapes are believed to play an important role as transitional buffer zones between paddy fields and the adjacent mountainous areas.

• 수산해양교육연구
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• 제22권2호
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• pp.180-194
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• 2010

Coastal sand dunes are dynamic and fragile buffer zones of sand and vegetation where the following three characteristics can be found: large quantities of sand, persistent wind capable of moving sand, and suitable locations for sand to accumulate. The functional properties of coastal sand dunes include the roles in sand storage, underground freshwater storage, coastal defense, and ecological environment space, among others. Recently, however, the integrity of coastal dune systems has been threatened by development, including sand extraction for the construction industry, military usage, conversion to golf courses, the building of seawalls and breakwaters, and recreational facility development. In this paper, we examined the development mechanisms and structural/format types of coastal sand dunes, as well as their functions and value from the perspective of coastal engineering based on reviews of previous researches and a case study of a small coastal sand dune in the Nakdong river estuary. Existing data indicate that there are a total of 133 coastal sand dunes in South Korea, 43 distributed on the East Sea coast (32 in the Gangwon area, and 11 in Gyeongsangbuk-do), 60 on the West Sea coast (4 in Incheon and Gyeonggi-do, 42 in Ghungcheongnam-do, 9 in Jellabuk-do, and 5 in Jellanam-do), and 30 on the South Sea coast (16 in Jellanam-do, 2 in Gyeongsangnam-do, and 12 in Jeju).

• Journal of Pharmaceutical Investigation
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• 제33권2호
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• pp.145-149
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• 2003

Manufacturing facilities of the pharmaceuticals must meet certain level of the cleanness required so that foreign substances such as dust, moisture, heat, microorganism, or virus do not contaminate the product. In case of radiopharmaceuticals for medical treatment and diagnosis, not only should the operators and environment be protected from radiation but also need to be isolated from the foreign contaminant. Therefore, manufacturing facilities for radiopharmaceuticals must satisfy the design standards of both hot cell and clean room which are specified by GMP. However, standards of maintaining negative pressure for preventing spread of radioactive contaminant in isolated facilities conflict with the standards of maintaining positive pressure for keeping cleanness. To solve this problem, air pressure of hot cell was designed lower than in the adjacent area to meet standards of the radiation safety. To keep higher cleanness in certain part of the hot cell for filling, minimal relative positive pressure allows. In order to effectively maintain the cleanness that is required for production of Tc-99m generator, which takes 70% of whole demand of radiopharmaceuticals, the rooms placed in each side of production room are used as a buffer area and three lead hot cells are installed in production room. In this research, we established the appropriate engineered design concept for Tc-99m generator manufacturing facility, which satisfies both GMP cleanness standard for preventing particles, bacteria, other contaminants and the regulations of radiation safety for supervising and controlling the amount of radiation exposure and exhausted radioactivity. And the concept of multi-barrier buffer zones is introduced to apply negative air pressure for hot cell with first priority and to continue relative positive air pressure for clean room.

• 산업융합연구
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• 제20권10호
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• pp.87-94
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• 2022

본 논문은 ESG에 따른 신 산업기술 재편으로 V4 지역은 한국의 배터리 제조기지의 변곡점을 제기하고자 한다. 이는 코로나19에 따른 경제 위기속에 러시아-우크라이나 전쟁과 미-중간의 패권을 겨루고 있기 때문이다. 그로 인해 글로벌 공급망 시장은 단절된다. 중국과 러시아로부터의 유럽으로 광물, 곡물조달이나, 가스, 심지어 밀 수입이 여의치 않는 환경에서, 신 공급처의 다각화가 나타나고 있다. 보호주의와 글로컬로써, 이 지역은 러시아-우크라전쟁으로 완충지대(친러, 헝가리)에서 고립지대(반러, 폴란드)로 활용된다. EU 테이퍼링 기간과 높은 인플레이션으로 세계경제 성장은 더 둔화될 전망이다. 논문의 경우 이 지역의 시장단절(chasm) 방안을 다룬다. 이러한 변화에 신사업 기술의 전환과 에너지 공급에 따른 독일의 산업위축이 지난 20년간 경제성장 원동력을 잃게 될 수도 있다. 이는 명목 지표에서 현지 시장 단절(chasm)이 발생하고 있다. 다른 한편으로 한국은 희토류소재 공급망의 불균형에 따른 우회 개발공급 지역으로써, V4지역에 AI를 접목한 에너지 발전 수출(원전 및 전기-수소 발전)지역으로 전개해야 한다. 본 논문은 이러한 산업 연계로 인한 시장단절을 극복하려면, 신에너지 개발과 플랫폼 규모화를 이루고, 세계 각국에서 신뢰적인 공급 기술(차세대 전지, 재활용기술, 저가LFP)을 다각화를 형성할 수 있음을 방증하고 있다.

• 문화기술의 융합
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• 제8권3호
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• pp.449-455
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• 2022

문경시 산양면의 부처손 군락지는 5개의 유형으로 구분할 수 있으며, 예전에는 군락지 전체에 부처손이 군락을 이루고 자생했다고 하지만, 현재는 일부 구간에만 남아있는 것이 현실이다. 부처손 군락은 인위적인 요인과, 자연적인 요인에 의해 훼손되고 있음을 알 수 있었으며, 인위적인 요인으로는 부처손이 약재, 화장용으로의 효과가 입증되어 많은 사람들이 무단으로 부처손 군락을 훼손하고 있었다. 자연적으로는 덩굴식물이 번성하여 부처손군락이 뒤덮히는 현상으로 부처손이 고사하는 경우로, 유지관리를 해 주지 않으면, 부처손 군락전체가 훼손될 위험에 처해 있는 것이 현실이다. 반면에 일부 초화류와는 공생관계를 가지고 번식해 나가고 있는 구간도 있어, 보존전략을 계획하여 실천해 나갈 필요가 있다. 부처손 군락을 보존하기 위해서는 우선 인위적인 훼손을 막기위한 CCTV의 설치가 필요할 것으로 사료되며, 반대로 휀스와 같은 시설물을 설치하면, 넝굴식물이 쉽게 타고 올라가 오히려 더 않좋은 경관이 연출될 수 있으므로, 보존구역과 회복구역, 완충구역을 설치하여 양호한 환경은 보존하고, 회복이 가능한 구역은 회복시키며, 더 이상의 피해가 없도록 보충완충구역을 설치한 것이 특징이라고 할 수 있다.