• 제목/요약/키워드: ecological value

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인공신경망 기반 드론 광학영상 및 LiDAR 자료를 활용한 임분단위 식생층위구조 추정 (Estimating the Stand Level Vegetation Structure Map Using Drone Optical Imageries and LiDAR Data based on an Artificial Neural Networks (ANNs))

  • 차성은;조현우;임철희;송철호;이슬기;김지원;박치영;전성우;이우균
    • 대한원격탐사학회지
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    • 제36권5_1호
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    • pp.653-666
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    • 2020
  • 지속가능한 산림 발전을 위해 식생층위구조를 파악하는 것은 산림 자원 관리에 중요한 요소이다. 최근 기술의 발달로 드론, 딥러닝 등 신기술을 산림 부문에 접목한 활용이 늘어났으며, 이를 이용한 식생층위구조 추정이 가능해졌다. 본 연구에서는 드론-광학 및 LiDAR 영상을 융합하여 공주, 삼척, 서귀포 지역에 대해 식생층위구조를 파악하였으며, 각 92.62%(Kappa value: 0.59), 91.57%(Kappa value: 0.53), 86.00%(Kappa value: 0.63)의 정확도를 확인하였다. 딥러닝을 활용한 식생층위구조 분석 기술은 광학 및 LiDAR의 정보량이 많아질수록 모델의 성능을 높일 수 있을 것으로 기대된다. 향후, 식생의 다양한 특성이 반영될 수 있는 복잡도 높은 모델과 충분한 샘플링을 통한 학습자료 구축이 동반되어 모델의 완성도가 높아진다면, 전국단위의 식생층위구조 지도를 구축하여 우리나라 정책·제도의 참고자료로 활용될 수 있을 것이다.

수도권 개발제한구역의 경관생태학적 가치평가 (An Assessment of Landscape Ecological Value of Greenbelt Areas in the Seoul Metropolitan Area)

  • 오규식;박지혜;이동우
    • 환경영향평가
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    • 제20권6호
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    • pp.867-878
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    • 2011
  • Development restriction areas (greenbelt areas) of Korea were recognized in 1970 as a means to control urban sprawl and conserve the natural environment. Although there have been some achievements, for a long time many planners and residents have requested a redefining of the green belt due to individual property rights restrictions and urban management problems. In fact, a lot of the greenbelt area is being destroyed by urban development. Therefore, conservation of ecological spaces in the green belt is needed to maintain urban naturalness. In this regard, this study suggests efficient methods to manage the greenbelt through the adoption of a landscape ecological value assessment. The greenbelt of the Seoul Metropolitan Area (SMA) is represented as the case study because there has been mounting pressure to develop the area in Korea. In this study, the assessment of the landscape ecology in the greenbelt area focuses on landscape structure and function. The assessment consists of the following steps: First, patches were derived by NDVI analysis using landsat remote sensing data. Second, characteristics of the patches were quantified by analyzing the landscape structure, such as patch size and shape index. Lastly, the gravity model and least cost path analysis to assess connectivity were applied to evaluate the landscape function in the green belt areas. The assessment result showed that 48.45% of green belt area should be conserved to maintain ecological stability and function. Moreover, major ecological networks were identified near the large patches in the northern and southern areas. However, relative low ecological values were identified in the western part of the green belt area due to the lack of green spaces. Furthermore, some development plans in the green belt were also identified near the conservation area. Based on these results, the restoration needed areas to enhance ecological value in green belt were displayed. This study suggests efficient management of the greenbelt area, which is disappearing as a result of urban development. The area for conservation chosen in this study should be managed carefully in urban planning. Finally, the results of this study can be used in green belt polices and plans for the promotion of ecological naturalness and stability.

인공식재에 의해 교란된 산림의 식생구조 및 생태적 복원기법 (Vegetation Structure and Ecological Restoration of Disturbed Forest due to Artificial Plant)

  • 배병호;윤용한;김정호
    • 한국환경과학회지
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    • 제20권6호
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    • pp.701-710
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    • 2011
  • The purpose of this study is to investigate the vegetation structure and ecological restoration of disturbed forest due to artificial plant. To this end, 12 plots were set up and surveyed. The result analyzed considering mean importance percentage(M.I.P) showed that the types were divided into three groups which are artificial planted forest type(three plots), natural forest-artificial planted forest type(four plots), natural forest type(five plots). Dominant proportion of artificial planted species were as follows: artificial planted forest type was over 60%, natural forest-artificial planted forest types were 14~49%. The range of Shannon's index of all associations was from 0.7131 to 0.7771(natural forest-artificial planted forest > natural forest > artificial planted forest). Also we suggested restoration method of vegetation for ecological value as follow: Control of density considering step and Remove of Pinus koraiensis seedlings of understory layer and shurb layer.

Enrichment of iron element from sulfur-containing iron tailings by S-HGMS technology

  • Zhou, Ya-qian;Yang, Rui-ming;Guo, Peng-hui;Li, Su-qin;Xing, Yi
    • 한국초전도ㆍ저온공학회논문지
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    • 제23권3호
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    • pp.5-9
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    • 2021
  • Comprehensive utilization of sulfur-containing iron tailings (SIT) not only solves environmental problems but also creates certain economic value. The iron element from SIT was enriched by the superconducting high gradient magnetic separation (S-HGMS) technology in this study. In the experiments, the total iron content (TFe) was increased from 26.3% to 60.5% with the total sulfur content (TS) of 5.9% under the optimal parameters, i.e., a magnetic flux density of 0.4 T, a slurry flow rate of 1500 mL/min. The high-quality sulfur-containing material with TFe of more than 60% was obtained, which can be used for preparing high-sulfur free cutting steel. The S-HGMS technology can realize the resource utilization of iron tailings with high added value.

훼손된 생태계의 복원을 통한 생태계 서비스의 회복: 채탄쓰레기 매립지 복원지의 사례 (Recovery of Ecosystem Service Functions through Ecological Restoration Practice: A Case Study of Coal Mine Spoils, Samcheok, Central Eastern Korea)

  • 오우석;이창석
    • 환경생물
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    • 제32권2호
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    • pp.102-111
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    • 2014
  • Ecological restoration is regarded as a major strategy for preventing biodiversity loss and thereby enhancing ecosystem service. This study was performed to evaluate ecosystem service value that the restored ecosystem provides. Ecosystem service was evaluated for provisioning and regulating services. The former service was evaluated by comparing similarities in a viewpoint of floristic composition to the reference site between the restored and the unrestored sites. Species composition of the restored site was found to be more similar to the reference site than that of the unrestored site and thereby restoration practice contributed for enhancing the provisioning service. Regulating service was evaluated based on microclimate control, soil amelioration, and improvement of water holding capacity. The value of ecosystem services in terms of microclimate control, soil amelioration, and improvement of water holding capacity was higher in the restored site than in the unrestored site. In consequence, ecological restoration of coal mine spoils contributed for enhancing the ecosystem service value of the corresponding site and thereby is rewarding the cost invested for restoration.

자연환경관리 GIS를 이용한 서울시 생태.자연도 작성연구 (Development of the mapping method for Urban Ecological Map for Seoul ' using Natural Environment Management GIS)

  • 김윤종;조용현;김경민
    • Spatial Information Research
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    • 제8권1호
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    • pp.51-67
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    • 2000
  • 본 연구는 서울시 생태·자연도의작성방안 마련을 위한 기초연구로서 도시생태계에 적합한 생태적 보전가치 평가모형의 개발이 시도되었으며, 서울시 소재 관악산을 대상지로 하여 생물종 현황자료 및 자연환경 GIS자료를 이용한 보전가치 평가결과를 토대로 생태·자연도가 시험적으로 작성되었다. 연구결과를 요약하면 다음과 같다. 첫째, 법정 생태·자연도 등급기준의 문제점은 전국규모의 우수생태계 중심의 등급기준으로서 도시생태계의 보전가치를 평가하기에는 미흡하며, 등급기준이 모두 정상적이다. 그리고 법정 생태·자여도 상의 별도관리지역 체계는 효과적인 도시생태계 관리에 부적합하다는 점이다. 둘째, 앞으로 생태·자연도 등급기준의 개선방향은 1 등급의 경우 복원대상지역과 시관리야생동·식물 및 서식지를 포함하고, 2등급에 생태통로지역을 추가하는 것이 필요하다. 셋째, 생태·자연도 평가과정은 순수 보존가치 평가에 의한 생태등급 평가와 행위규제를 포함하는 생태·자연도 작성과정을 분리하는 것이 바람직하다. 평가모형 개발에서는 위계분석기법에 의한 평가인자선정과 쌍체비교기법에 의한 가중치 선정과정을 거치는 것이 평가모형의 객관성 논란을 줄이는 방법이 될 수 있다. 넷째, 시생태·자연도는 도시생태계의 규모 및 특성에 맞게 구역별 행위규제기준이 재조정되어야 할 것이다.

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생태미학 연구의 개념화 및 방법론 탐구 (Establishing a Research Framework for Ecological Aesthetics: A Methodological Review)

  • 이종선
    • 한국조경학회지
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    • 제45권4호
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    • pp.71-80
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    • 2017
  • 환경설계는 우리 사회의 생태적, 미적, 사회적 가치들의 조율을 추구하지만, 생태적 가치와 미적 가치는 쉽게 조율되기에는 복잡한 관계를 지닌다. 생태미학이라는 분야는 생태적으로 건강하고, 미적으로도 매력적인 경관설계를 그 목표로 경관의 지속가능성과 미학의 관계에 대해 탐구한다. 이러한 복잡한 관계를 다루는 학문 영역의 중요성에도 불구하고, 극히 일부의 연구들이 생태미학과 관련된 주제를 경험적 방법을 통해 연구했다. 본 연구는 생태미학의 기존 개념을 정리하고, 이를 연구방법론과 연결하고자 했다. 이를 위해 첫째, 경관과 대중의 인식과의 관계를 나타내는 개념적 틀을 생태 미학적 관점에서 재정의했다. 이 관계에서 특히 디자인 및 정보가 개입하여 나타나는 조절 효과에 대해 보여준다. 이 틀로부터 도출되는 세 가지 하위 주제는 다음과 같다. (1) 생태적 기능과 경관 선호도의 상호관계, (2) 경관중재: 생태적 기능도 보호하고, 미적 가치도 확보할 수 있는 절충된 디자인 전략, (3) 정보중재: 생태에 대한 정보가 미적 경험에 미치는 중재 효과가 그것이다. 세 가지 주제는 개념적 틀에서 보여지듯, 서로 영향을 주고받는 관계이며, 각 영역의 연구 시 다른 영역의 고려가 필요하다. 세 가지 하위 주제에 따라 기존의 이론적, 실증적 연구들을 방법론적 관점에서 검토하고, 한계를 지적하며, 보완 가능한 방법론 등을 제시하였다. 본 연구는 그 동안 해석적이고 이론적인 담론에 그쳐왔던 생태미학을 개념적 틀을 통해 정리하고, 각 영역을 넘어선 방법론적 고려를 제시함으로써 생태미학의 방법론을 보완하는데 그 의의가 있다.

생태경관다양성과 시각경관민감도를 적용한 GIS중첩평가 계획기법 (Techniques for Evaluation of Ecological and Aesthetic Aspects of Landscapes through GIS Overlay Method)

  • 장래익;이명우
    • 한국조경학회지
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    • 제37권4호
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    • pp.22-31
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    • 2009
  • 본 연구에서는 무분별한 개발로 인한 자연경관훼손의 예방을 목적으로 자연경관보존방안을 제정하기 위한 경관평가를 수행하였다. 우리나라에서의 경관평가는 개발계획에 따른 시각경관만을 평가하고 있는 현실이며, 경관의 생태적 본질까지 동시에 평가하지는 못하고 있는 실정이어서 이에 대한 대책이 요구되고 있다. 본 연구에서는 이를 위해 시각경관민감도와 생태경관다양성을 요소로 하는 경관평가를 진행하였다. 경관평가의 목적은 실질적인 보존지역을 설정하고 그에 따른 계획을 수립하기 위함이기 때문에 이앤 맥하그(Ian McHarg)의 도면중첩법을 적용한 지리정보시스템(Geographic Information System: GIS)를 활용하였으며, 생태경관다양도와 시각경관민감도를 측정하여 중첩분석하였다. 또한, 경관영향요소의 영향력분석을 통해 집중관리지역을 분석할 수 있었다.

한국의 저서성 대형무척추동물 생태점수 개선 (Revision of Ecological Score of Benthic Macroinvertebrates Community in Korea)

  • 공동수;박영준;전용락
    • 한국물환경학회지
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    • 제34권3호
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    • pp.251-269
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    • 2018
  • In 1997, the environmental score (Q) corresponding the tolerance value of Korean benthic macroinvertebrate species and the related biotic score, the ecological score of benthic macroinvertebrates (ESB) were proposed; ESB was similar to Beck's biotic index or Chandler's biotic score. This study was carried out to revise the Q values of individual species and the assessment scheme of ESB based on the taxonomic performance and ecological information accumulated since then. The original ESB was renamed as TESB (total ESB), and AESB (average ESB) was newly proposed. AESB is calculated by dividing the TESB (for a given station) by the number of species present in the sample. In this study, TESB showed a positively skewed distribution, while AESB showed a negatively skewed distribution. The correlation between TESB and the concentration of $BOD_5$ was a little stronger than that of the original ESB. TESB showed a very strong correlation (correlation coefficient r = 0.98) with Margalef's species richness, of which correlation coefficient was higher than that of AESB (r = 0.85). AESB showed a strong correlation (r = -0.79) with the concentration of $BOD_5$, while TESB showed a weaker correlation (r = -0.67). Applying TESB and AESB together in an assessment of the environment may be comprehensive because the physical and chemical states of the environment can be evaluated together. AESB is less dependent on the sample size, while TESB tends to increase as the sample size increases. In the evaluation of the environment using TESB, it is necessary to standardize the methods on monitoring.

생태네트워크 구축을 위한 해안습지 기능평가 연구 - 충남 서해안을 대상으로 - (A Study on Function Assessment of Coastal Wetlands for Ecological Network Establishment -Focused on the Westcoast of Chungnam Province -)

  • 박미옥;박미란;구본학
    • 한국환경복원기술학회지
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    • 제10권6호
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    • pp.70-80
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    • 2007
  • This study was surveyed from January to september, 2007 in order to evaluate the function of coastal wetland as a ecological axis in korea peninsula. Assessment was done by RAM (Rapid Assessment Method). RAM is consisted of total 8 contents and divided into high, moderate, low. The preservation grade of RAM is divided into 4 grades; absolute preservation, preservation, improvement and improvement or restoration. Throughout survey on total 14 wetlands of marine, estuary wetland and back marsh which are distributed in west coast in chung-nam province, their function was assessed. As result, total all the 14 wetlands were judged as preservation grade by assessment of 8 functional contents. The function of wetlands assessed as preservation grade showed high in water quality protection and improvement. Also, showed high in vegetation diversity, wildlife habitat and aesthetic recreation. Meanwhile, showed low in ground water recharge, Shoreline/Stream Bank Protection, Flood/Stormwater storage and Flood flow alteration. Of wetlands evaluated as preservation grade, Dae-ho, Sinduri, Bu-Nam lake, Sowhang dune and keum river estuary were assessed as absolute preservative area owing to habitation of international protection species and endangered species. These wetlands are essential to be managed continuously as a area having high ecological value. Farther, this wetlands will be done as a axis of ecological network related to land ecosystem.