기후변화에 따른 구실잣밤나무의 생육 적지 예측 및 탄소저장량 추정 - 완도지역을 대상으로 -

강진택 ( Kang Jin-teak ),전주현 ( Jeon Ju-hyeon ),손영모 ( Son Yeong-mo ) 한국도서학회 2016 韓國島嶼硏究 Vol.28 No.2

본 연구는 최근 기후변화로 인한 난대수종의 확산에 따라 난·온대지역에 분포하고 있는 상록활엽수종인 구실잣밤나무의 생육최적지 예측 및 탄소저장량 추정을 위해 수행되었다. 임목의 생장과 입지환경 인자간의 생육최적지 예측을 위하여 도서 및 난ㆍ온대지역에 분포하고 있는 구실잣밤나무 자생지 임분의 40개 표준지로부터 생장 및 입지환경인자 데이터를 수집하였다. 수집된 질적ㆍ양적 데이터의 수량화에 의한 생장요인과 입지환경요인간의 관계구명에 의하여 생육적지 평가기준을 설정하였다. 생육적지 평가기준을 적용하여 개발된 GIS 적지예측프로그램을 이용하여 다양한 난대상록활엽수가 분포하고 있는 전남 완도지역을 대상으로, 구실잣밤나무의 생육적지 예측과 매핑(mapping) 분석을 실시하고 생육적지 등급지별 탄소저장량을 추정하였다. 구실잣밤나무의 등급별 생육적지 면적과 탄소저장ㆍ흡수량은Ⅰ등급(최적지) 지역은 734.4ha(12.4%), 160,018.4 tCO2, 4,651.7 tCO2/ha/yr, Ⅱ등급 지역은 2,265.7ha(38.7%),493,673.4 tCO2, 14,350.9 tCO2/ha/yr, Ⅲ등급 지역은 2,416.4ha(41.3%), total 526,509.4tCO2, 15,305.5 tCO2/ha/yr 그리고 Ⅳ등급 지역은 433.3ha(7.6%), 94,411.7 tCO2, 2,744.5tCO2/ha/yr 로 나타났다. This study is conducted to predict the optimal growth site and estimate carbon stocks for Castanopsis sieboldii(Makino) Hatus, evergreen broad-leaved tree ranged throughout warm temperate zone, in accordance with the expansion of tree species of warm temperature zone by climate changes. In order to predict the optimal growth site between tree growth and site environment, data of growth factors of tree and environmental factors have been collected from 40 sample plots of natural growth stand of C. sieboldii in warm temperate zone. Assessment criteria of the optimal growth site was obtained by analyzing relationship between growth factors from quantification method of qualitative and quantitative data collected and site environment factors. By GIS program of suitable-site prediction developed from derived suitable-site assessment criteria, performed prediction and mapping to suitable growth sites for C. sieboldii in Wando of Jeollanam-do having various warm temperate evergreen broad-leaved trees, and then estimated carbon stocks of suitable growth sites at each level. In the result of analysis, suitable growth site areas and carbon stocks at each level for C. sieboldii are followed by: Ⅰ class(the optimal site) was 734.4ha(12.4%), 160,018.4 tCO2, 4,651.7 tCO2/ha/yr, Ⅱ class was 2,265ha(38.7%), 493,673.4 tCO2,, 14,350.9 tCO2/ha/yr, Ⅲ class was 2,416.4ha(41.3%), 526,509.4 tCO2, 15,305.5 tCO2/ha/yr and Ⅳ class was 433.3ha(7.6%), 94,411.7 tCO2, 2,744.5 tCO2/ha/yr.

가뭄대비 농업용 지하댐 적지 평가 지표 개발 - 계층분석과정의 적용 -

명우호,송성호 한국지하수토양환경학회 2017 지하수토양환경 Vol.22 No.6

Climate change has often resulted in severe droughts in a rice-farming season (i.e., April to June), and the large amount of water resources were needed to cope with droughts during the season. Therefore, the subsurface dam, which is able to store groundwater resources in the alluvium aquifer, has been considered to be an alternative for securing more groundwater resources. In this study, suitable sites assessment criteria for agricultural subsurface dam using analytic hierarchy process (AHP) were established for adequate drought management. Moreover, the criteria were applied to the existing five agricultural subsurface dams to verify their applicability of groundwater supply for each subsurface dam. The assessment criteria were divided into three major categories (geology, hydrology and business condition) and classified to 12 individual sub-categories with weighting. From the assessment, Ian subsurface dam and Wooil subsurface dam were identified as the best and the worst suitable site, respectively, and this result was in accordance with the average amount of annual groundwater supply by each subsurface dam during the period of 2011-2017.

서식지 적합지수를 이용한 근소만 갯벌 바지락(Ruditapes philippinarum)의 어장적지평가

최용현,홍석진,전승렬,조윤식 한국수산과학회 2019 한국수산과학회지 Vol.52 No.5

Evaluating the habitat suitability of potential aquaculture sites for cultured species is critical to the sustainable use of tidal flats. This study evaluated the habitat suitability index (HSI) of 12 sites in a tidal flat aquaculture farm at Geunso Bay, Taean, in June 2016. The parameters used to model the suitability index were Growth (water temperature, chlorophyll α, hydrodynamics), Survival (sediment-sand, mean size, air exposure), and Environment (DO, salinity). The HSI was calculated using weighted and No weighted geometric means. The results showed high habitat suitability at the bay’s entrance (HIS; No weighted, 0.60-0.70; weighted, 0.60). Hydrodynamics, air exposure, sediment-sand and mean size are thought to have a significant impact on habitat selection by Manila clams Ruditapes philippinarum. This study explored the optimum habitat for Manila clams by calculating the HSI, providing basic data for tidal flat management.

어안 렌즈 카메라와 SOLPOS 계산기를 이용한태양광 발전 시스템 부지 적합성 평가

송진영,최요순,정영욱,임길재,박현성 한국자원공학회 2013 한국자원공학회지 Vol.50 No.6

This study performed a site suitability assessment for installing photovoltaic (PV) systems at the Samma-taejung mine water treatment facility. A fisheye-lens camera (Solmetric’s SunEye210) and the SOLPOS calculator developed by National Renewable Energy Laboratory (NREL), USA were used to quantitatively evaluate the suitability of four candidate points for PV installations. Three indices including SA (Solar Access), TOF (Tilt and Orientation Factor) and TSRF (Total Solar Resource Fraction) were calculated at the four candidate points (Points 1-4). As a result, we could know that Point 2 has higher TSRF (81%) than other three candidate points. Although Point 3 has the highest SA, its TSRF is lower than that of Point 1 due to terrain gradient. Therefore, it is recommended that Point 2 is the most suitable location to install PV systems in the study area. 본 연구에서는 삼마태정 광산배수 자연정화시설을 대상으로 태양광 발전 시스템 부지 적합성 평가를 수행하였다. 태양광 발전 시스템 설치 후보지의 적합성을 정량적으로 평가하기 위해 미국 Solmetric에서 개발한 어안 렌즈 카메라(SunEye210)를 사용하여 SA(Solar Access) 지수를 산정하였고, 미국 신재생에너지연구소에서 개발한 SOLPOS 계산기를 사용하여 TOF(Tilt and Orientation Factor)를 산정하였다. 또한, SA와 TOF를 이용하여 TSRF(Total Solar Resource Fraction)를 계산하였다. 연구지역에서 4개의 후보지점을 선정하여 분석을 수행한 결과 2번 후보지점이 TSRF가 81%로 가장 높게 산정되었다. 3번 후보지점은 SA는 높았으나 정남향 설치가 어려운 지형조건으로 인해 TSRF는 상대적으로 낮았다. 따라서 연구지역에서는 2번 후보지점에 태양광 발전 시스템을 설치하는 것이 가장 적합한 것으로 판단된다.

Development of an Accident Consequence Assessment Code for Evaluating Site Suitability of Light- and Heavy-water Reactors Based on the Korean Technical Standards

Hwang, Won Tae,Jeong, Hae Sun,Jeong, Hyo Joon,Kil, A Reum,Kim, Eun Han,Han, Moon Hee The Korean Association for Radiation Protection 2016 방사선방어학회지 Vol.41 No.4

Background: Methodologies for a series of radiological consequence assessments show a distinctive difference according to the design principles of the original nuclear suppliers and their technical standards to be imposed. This is due to the uncertainties of the accidental source term, radionuclide behavior in the environment, and subsequent radiological dose. Both types of PWR and PHWR are operated in Korea. However, technical standards for evaluating atmospheric dispersion have been enacted based on the U.S. NRC's positions regardless of the reactor types. For this reason, it might cause a controversy between the licensor and licensee of a nuclear power plant. Materials and Methods: It was modelled under the framework of the NRC Regulatory Guide 1.145 for light-water reactors, reflecting the features of heavy-water reactors as specified in the Canadian National Standard and the modelling features in MACCS2, such as atmospheric diffusion coefficient, ground deposition, surface roughness, radioactive plume depletion, and exposure from ground deposition. Results and Discussion: An integrated accident consequence assessment code, ACCESS (Accident Consequence Assessment Code for Evaluating Site Suitability), was developed by taking into account the unique regulatory positions for reactor types under the framework of the current Korean technical standards. Field tracer experiments and hand calculations have been carried out for validation and verification of the models. Conclusion: The modelling approaches of ACCESS and its features are introduced, and its applicative results for a hypothetical accidental scenario are comprehensively discussed. In an applicative study, the predicted results by the light-water reactor assessment model were higher than those by other models in terms of total doses.

Development of an Accident Consequence Assessment Code for Evaluating Site Suitability of Light- and Heavy-water Reactors Based on the Korean Technical Standards

Won Tae Hwang,Hae Sun Jeong,Hyo Joon Jeong,A Reum Kil,Eun Han Kim,Moon Hee Han 대한방사선방어학회 2016 방사선방어학회지 Vol.41 No.4

육상풍력 입지지도 I: 풍력자원 분류지도 개발 및 자원의 적합성 평가

김진영,황수진,임덕오,김현구 한국풍공학회 2021 한국풍공학회지 Vol.25 No.2

본 연구는 육상풍력 입지지도를 고도화하기 위하여 초고해상도 풍력이용률 자원지도와 풍력시장 경제성 모델을 활용하여 풍력자원 분류지도를 개발하였다. 풍력자원 분류는 경제성의 유무에 따라 적합성을 상, 하로 구분하되 적합성 상내에서도 우수지역을 추가 분류하여 우선 검토대상지역을 제시하였다. 국내 풍력입지를 분석한 결과, 전국의 25.1%는 경제성이 있었으며 이중에서 1.7%는 우수지역에 해당하였다. 풍력자원의 경제적 적합성 평가 결과는 이용률 지도의 정확도, 설비설치비용(Capital expenditure, CAPEX), 그리고 계통한계가격의 변동성에 따라 적합성 상 지역은 –7.6%p ~ 12.6%p(적합성 우수 지역은 –1.1%p ~ 2.7%p)까지 변화하였다. 풍력 자원은 보조금, 이용률에 가장 크게 영향을 받는 반면, CAPEX의 변화는 경제성 없는 지역이 경제성 있는 지역으로 바뀔 수 있는 확률이 크다는 것도 확인했다. In order to advance the onshore wind energy siting atlas, we developed the national wind resource classification map using ultra-high resolution wind resource maps and market economics models. The wind resource map was classified into fair and poor class suggesting presence or absence of economic feasibility, and good class in fair class was additionally recategorized with high priority areas. About 25.1% of the country had economic feasibility(fair class), of which 1.7% was superior to the result(good class). These amounts has been influenced by accuracy of capacity factor map as well as changes of Capital expenditure(CAPEX) and subsidy derived by system marginal prices up to -7.6%p ~ 12.6%p for fair class(-1.1%p ~ 2.7%p for good class). It had the greatest impacts on the subsidy change derived SMP and capacity factor than CAPEX. We also identified that with CAPEX affects on overcoming economic feasibility within limited capacity factor.