• 한국환경복원기술학회지
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• 제18권5호
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• pp.1-11
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• 2015

Jeju Island is managed intensively in terms of environmental and ecological aspect because of its extraordinary ecosystem types comprising numerous rare, protected flora and fauna. To depict rapid change of habitat status in Jeju Island, the InVEST Habitat Quality model has been operated and compared analytically with the Eco-Natural map. The Habitat Quality map of Jeju Island is turned out to have similar inclination with Eco-Natural map. We compared the average habitat quality value in each Eco-natural map class in Jeju Island and the habitat quality value of first second third grade and non-included area decreased as 0.95 0.76, 0.53 and 0.37 in eco natural map respectively. Compared to biodiversity map based on biological investigation, the result of the InVEST habitat quality model can be simply obtained by land cover map with threat and sensitivity data. Further studies are needed to make explicit coefficients for Jeju Island and Korean peninsula, then the Habitat Quality model could be applied to past and future scenarios to analyze extent of habitat degradation in time series to help decision makers.

• 한국환경복원기술학회지
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• 제15권5호
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• pp.19-29
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• 2012

The purpose of this study is to suggest improvements of Eco-Natural map preparation guideline by presenting assessment methods that can be applied to the result of river ecosystem health survey and assessment, using the Geographic Information System. The area for studying is the main stream of the Hwang River where is easy to collect data and available to compare before and after of river assessment. It was reevaluated by reflecting the result of river ecosystem health assessment of the Ministry of Environment. As the result, Eco-Natural map of the study area reflecting the river assessment, the changes in the area ratio by grade have been increased from 1.14% to 14.03% in the first-grade and from 24.64% to 43.91% in the second-grade. It is considered to present more realistic grade due to the assessment of the rivers that have not been reflected in the meantime. Consequently, the result of this study will be useful for establishing the development projects on the rivers, providing the foundation for more realistic and active protection.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제4권4호
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• pp.141-145
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• 2023

This study surveyed the changes in the proportion of Ecological and Natural Map (ENM) grades in Korea, the distribution ratio of ENM 1st-grade areas by region, and the current status of regional public appeals for the five-year period from 2017 to 2021. The nationwide changes in ENM grades revealed an increase in 1st-grade, 3rd-grade, and separately managed areas but a decrease in the ratio of 2nd-grade areas. Nationwide, Gangwon had the highest distribution ratio of 1st-grade areas, at 46.77%, while Gwangju had the lowest, at 0.05%. In the five-year study period, 383 appeals concerning ENM grades were received and processed. Gangwon had the greatest number of appeals, with 96, while Sejong had the fewest, with 1. A significant correlation was observed between the distribution ratio of 1st-grade areas and public appeals.

• 환경영향평가
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• 제16권4호
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• pp.285-300
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• 2007

The purpose of this study was to ascertain the ecological state and problems of eco-bridges on Korean roads. The study was conducted from March to April 2007 by checking ecological factors and wildlife around the eco-bridges and habitats. 8 representative eco-bridges were selected by their bridge shape and condition of location. After field survey, we analyzed ideal trails for wildlife using field data, digital topology maps, satellite images, and land use map. In addition to trail analysis, we identified the propriety of the eco-bridges through Population Viability Analysis. Because of unsuitable location and management, we found that most of the bridges are not proper for wildlife dispersal. Moreover, in some habitats, we could expect that some local populations might be extinct without appropriate treatments.

• 헤리티지:역사와 과학
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• 제46권3호
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• pp.78-93
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• 2013

본 연구는 자연유산의 미래의 수요자인 대학생들을 대상으로 천연기념물, 명승으로 대별되는 자연유산과 국 도립공원, 생태 경관보전지역과 같은 유사 개념을 얼마만큼 올바르게 인식하고 있는지를 알아보고, 보존 중요성 등 태도차원에서 각 개념 간의 경쟁구조를 분석하고자 하였다. 연구 결과, 보존의 중요도는 '천연기념물>생태 경관보전지역>국 도립공원>명승'의 순으로 나타나 천연기념물보다는 명승을 상대적으로 덜 보존적으로 인식하고 있다는 것을 알 수 있었다. 또한 순천만, 설악산, 창녕 우포늪, 홍도, 독도, 문경새재, 한라산, 성산일출봉, 영월 고씨굴, 태안 신두리 해안사구 포함 관광명소 10개소를 대상으로 자연유산 유형을 올바르게 인식하고 있는지를 대응분석한 결과, 전반적으로 응답자들은 자연유산에 대한 개념을 바르게 인식하고 있지 않다는 것을 파악할 수 있었으며, 이러한 문제점을 해결할 수 있도록 인식제고 프로그램 마련이 필요하다. 다차원 척도법을 활용하여 자연유산 유사개념 경쟁구조(유사성)를 파악한 결과, 포지셔닝 맵에서 천연기념물과 명승이 비교적 멀리 떨어져 나타난 것을 볼 때 각기 차별화되는 방문자 관리가 요구된다. 포지셔닝 맵 상에 나타난 자연유산 유사개념 경쟁구조와 각 개념에 대한 태도를 구성하는 속성결합의 결과를 살펴보면, 자연유산을 비롯한 네 개념 모두가 뚜렷한 차이를 보이지 않은 것으로 보아 향후 차별화된 홍보전략이 필요하다. 응답자들도 자연유산을 활용보다는 보존의 대상으로 생각하는 경향이 있는 것으로 파악되며, 다양한 관리주체 때문에 천차만별인 관리 수준을 체계화할 필요가 있다고 여겨진다.

• Nuclear Engineering and Technology
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• 제54권3호
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• pp.826-833
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• 2022

A two-phase natural circulation test using SMART integral test loop (SMART-ITL) was conducted to explore thermo-hydraulic phenomena of two-phase natural circulation in the SMART reactor. Specifically, the test examined the natural circulation in the primary loop under a stepwise coolant inventory loss while keeping the core power constant at 5% of the scaled full power. Based on the test results, three flow regimes were observed: single-phase natural circulation (SPNC), two-phase natural circulation (TPNC), and boiler-condenser natural circulation (BCNC). The flow rate remained steady in the SPNC, slightly increased in the TPNC, and dropped abruptly and maintained in the BCNC. Using a natural circulation flow map, the natural circulation characteristic in the SMART-ITL was compared with those in pressurized water reactor simulators. In the SMART-ITL, a BCNC regime appeared instead of siphon condensation and reflux condensation regimes because of the use of once-through steam generators.

• 한국수자원학회논문집
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• 제54권9호
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• pp.657-666
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• 2021

인간활동으로 인해 서식처의 변화, 서식처의 파편화를 비롯하여 기후변화, 토지이용의 변화 등으로 생태계 생물 다양성은 빠르게 손실되고있는 상황이다. 최근 들어 유역의 건전성을 확보하기 위해 유역관리 차원에서 접근하려는 시도가 시작되었으나 어떠한 수단을 통해 생물다양성과 서식처 관리에 대하여 접근할 수 있는지에 대한 연구는 아직 부족한 실정이다. 본 연구의 목적은 금강유역을 대상으로 Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) habitat quality model을 이용하여 유역의 서식처 질을 평가하는 것이다. 서식처 평가결과는 생태·자연도 및 수생태 건전성 평가결과와의 비교분석을 통해 검증되었다. 금강유역의 서식처 질은 0.0 ~ 0.86으로 분석되었으며, 유역의 하류보다 상류에서 서식처 질이 더 높은 것으로 나타났다. 생태·자연도 등급별 평균 서식처 질을 비교한 결과 1등급, 2등급, 3등급에서 각각 0.80, 0.76, 0.71이었다. 수생태 건전성 결과와의 상관성 분석결과 R²은 0.58, Pearson 상관계수는 0.76 였다. 본 연구의 결과는 향후 서식처 보호의 강화와 장기적인 생물 다양성 관련 정책의 실행을 지원하는 기초자료로 활용될 수 있다.

• 한국환경생태학회지
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• 제21권6호
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• pp.565-575
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• 2007

본 연구의 목적은 한국의 비오톱지도화가 자연환경보전을 위한 실제적 계획수단으로 활용될 있도록 비오톱지도화의 출발지인 독일과의 비교를 통하여 정책적 시사점을 도출하고, 한국의 전국 비오톱지도화를 위한 새로운 방향설정을 모색하는데 있다. 연구방법은 한국과 독일의 비오톱지도화 관련 문헌 및 자료를 수집하였고, 수집된 자료를 국토 및 연방정부차원, 주정부차원, 도시 및 정주지차원에서 양국의 비오톱지도화에 대한 전반적 특성 및 경향에 대해서 검토하였다. 조사 결과 첫째, 독일은 국토전역에 걸쳐 경관생태권역별로 차등 있는 자연 및 경관을 보호, 관리하기 위해서 경관생태유형도와 경관생가치등급도를 작성하였다. 한국은 생태자연도나 녹지자연도가 전국단위에서 자연환경보전을 위해 추진된 지도화로 들 수 있다. 둘째, 독일 주정부차원에서는 주로 자연지역과 그에 준하는 지역을 대상으로 비오톱지도화가 실시되었고, 각주마다 비오톱 적색리스트가 작성된 반면, 한국의 경우 이에 준하는 도차원의 비오톱지도화는 아직 이루어지지 않고 있다. 셋째, 독일의 도시 및 정주지역의 비오톱지도화는 대도시지역 뿐만 아니라 중 소도시와 농촌지역에서도 실시되었으나, 한국의 경우 대도시와 같이 도시화가 많이 진행된 지역을 중심으로 이루어지고 있다. 결론적으로 비오톱 지도화가 전국토의 균형 있는 자연환경 및 비오톱 보호 관리를 위한 수단이 되기 위해서는 도시지역뿐만 아니라 자연지역 및 반자연지역의 비오톱지도화가 활성화되어야 한다. 또한, 이를 위해서는 국토전역에 적용할 수 있는 비오톱유형목록 및 비오톱적색리스트에 대한 연구가 선행되어야 할 것이다.

• 한국조경학회지
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• 제33권4호
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• pp.108-118
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• 2005

While the recent lift of restrictions in greenbelt areas is expected to generate a number of development plans, there are efforts to create various development plans into spatial plans that consider the natural and ecological conditions of development sites. However, these development plans consider Degree of Green Naturality or Degree of Ecology only when designating areas for conservation within development sites. It is true that they don't fully reflect the value of green areas and wetlands as habitats and natural resources. Therefore, this study built an conservation value assessment model that is applicable to sites where development is planned in Korea by reviewing prior case examples md studies and applied the developed model to a case study area. The site where the conservation value assessment model was applied to is an area around Yongsan-ri and Suha-ri, Doam-myon, Pyeongchang-gun, Gangwon province where quality natural resources are located in and wend the site. This is a site for the development of Alpensia Resort where a resort including facilities for the Winter Olympics is planned to be introduced. In order to assess the conservation value of the site for Alpensia Resort, a total of eight items including area, distribution of communities, habitation of species with conservation value, functions of habitats, connectivity of habitats, vegetation layers of forests, age of forests, and ratio of non-native plants were studied through literature review and field surveys. The assessment was made by dividing the site into 95 habitats that are perceived by aerial photographs and each habitat unit was assessed on the eight items in a 3-point scale. Each unit habitat assessed in a 3-point scale was segmented into primary, secondary or tertiary areas based on the conservation value. Habitats assessed as primary were designated as priority (absolute) conservation areas and those assessed as secondary and tertiary were set as secondary conservation areas and tertiary conservation areas, respectively. As a result, each area represented 26.9%, 20% and 3% of total site area. Based on this result, habitat management plans were developed to conserve primary conservation areas, improve secondary conservation areas and restore tertiary conservation areas. In addition, a development plan was developed to create habitats in areas where new habitats are requested in order to build an eco-network in the site and a plan to create eco-corridors was proposed. In developing a land use plan for the site, a development plan that considers conservation areas first should be set up based on the outcome of conservation value assessment. This can be linked to the development of an environment-friendly land use plan as well as easing the establishment of a green area and eco-network. This study will facilitate the implementation of the 'conservation before development' principle, which can prevent reckless development, by assessing conservation value in setting up development plans.

• 한국환경복원기술학회지
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• 제17권4호
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• pp.17-27
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• 2014

Wind power which is one of renewable energies is higher economical efficiency and technical maturity than other renewable energies. Recently, the government of ROK announced to increase the proportion of renewable energy through the National Energy Plan. Also, industry required to deregulate for large-scale wind power as Renewable Portfolio Standard (RPS) is introduced. Wind power whereas the eco-friendly energy, is a serious level of damage of the natural environment and topography when the wind power is located. Therefore, the study selected the indicators required for site selection of wind power and proposed the feasible area for wind power based on wind resource map. We selected the 15 indicators including 12 legal protected area, Ecology and Nature Map, rarity, and connectivity (National Ecological Network). After site selection, we should be considered slope and altitude at the stage of design for wind farm to mitigate the environmental impact. Results of analysis showed that 22.3% of wind resource map is available to locate wind power in real. Through the field survey we had verified the accuracy of the results was significantly correct.