• 제목/요약/키워드: Conservation methodology

검색결과 135건 처리시간 0.02초

식생 군집구조 안정성 평가항목 보완을 통한 국토환경성평가지도 개선방안 연구 (Improvement of the Environmental Conservation Value Assessment Map (ECVAM) by Complement of the Vegetation Community Stability Item)

  • 전성우;송원경;이명진;강병진
    • 한국환경복원기술학회지
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    • 제13권2호
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    • pp.114-123
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    • 2010
  • The Environmental Conservation Value Assessment Map (ECVAM) is a five grade assessment map created with nationally integrated environmental information and environmental values. The map is made through the evaluation of 67 items, including greenbelt area and bio-diversity. The ECVAM assesses the stability of the community using forest maps. However, the existing assessment method is problematic because the assessment grades are evaluated using higher than practical values; in part because it uses even-valued overlay and minimal indicator methods. This study was performed in order to suggest an integrated assessment method that could complement the stability evaluation based on existing methods. Accordingly, this study added forest type information, including whether the forest was natural or artificial, to the overlay method using forest diameter maps and forest density maps. As a result, the proposed ECVAM indicated a drastic grade change. After applying the method in South Korea, Grade I areas decreased 12.1%, from 52.6% to 40.6%, Grade II areas increased 11.9%, from 17.4% to 29.2%, and Grade III areas increased 0.2%, from 17.1% to 17.4%, respectively. From the results of the field survey, we found differences between natural forest and planted forest with regard to the number of mortality, species of shrubs, and vine cover. This means that natural forests are more stable than planted forests. This study suggests an improved assessment methodology to complement the existing EVCAM method. The results are expected to be used in environmental evaluations and forest conservation value assessments in ecology and environmental fields.

한국 임업부문 공적개발원조의 방향성에 대한 연구 (A study on the direction of Korean official development assistance in forestry)

  • 윤준영;박관수;김세빈;이준우;성용주;이상진;박범환;장관우
    • 농업과학연구
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    • 제40권1호
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    • pp.19-26
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    • 2013
  • Official Delvelopment Assistance(ODA) in forestry sector has been implemented for about 60 years after the second world war. Forestry aid is getting important due to its role to play as a practical methodology of Millenium Development Goals(MDGs). Korea has conducted ODA in forestry in 22 developing countries since 2005. However its contents are mostly focused on environment conservation by plantation. In the other hands, the other donor countries try to eradicate poverty of people who are dependent on forestry, environment conservation and etc in MDGs by means of ODA in forestry. Swiss, Germany, Japan, UK, and the other donor counties found out without taking account of forest dependent people who are supposed to manage 22% of developing countries's forest, forestry aid could not be successful. The direction of Korean ODA in forestry need to change in order to meet the current movement of International ODA. For this, Korea should develop various contents of forestry aids like CF (Community Forestry) project which the donor countries with long history of forestry aids have implemented in many ways.

Assessment of Soil Erosion Loss by Using RUSLE and GIS in the Bagmati Basin of Nepal

  • Bastola, Shiksha;Seong, Yeon Jeong;Lee, Sang Hyup;Shin, Yongchul;Jung, Younghun
    • 한국지반환경공학회 논문집
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    • 제20권3호
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    • pp.5-14
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    • 2019
  • This study attempted to study the soil erosion dynamic in the Bagmati Basin of Nepal. In this study, an inclusive methodology that combines Revised Universal Soil Loss Equation (RUSLE) and GIS techniques was adopted to determine the distribution of soil loss in the study basin. As well, this study attempts to study the intensity of soil erosion in the seven different land use patterns in the Bagmati Basin. Soil loss is an associated phenomenon of hydrologic cycle and this dynamic phenomenon possesses threats to sustainability of basin hydrology, agriculture system, hydraulic structures in operation and overall ecosystem in a long run. Soil conservation works, and various planning and design of watersheds works demands quantification of soil loss. The results of the study in Bagmati Basin shows the total annual soil loss in the basin is 22.93 million tons with an average rate of 75.83T/ha/yr. The computed soil loss risk was divided into five classes from tolerable to severe and the spatial pattern was mapped for easy interpretation. Also, evaluation of soil loss in different land use categories shows barren area has highest rate of soil loss followed by agriculture area. This is a preliminary work and provides erosion risk scenario in the basin. The study can be further used for strategic planning of land use and hydrologic conservation works in a basin.

산림복원 평가지표를 활용한 산림 훼손지 우선복원대상지 발굴 - 강원도 지역을 대상으로 - (Identification of Priority Restoration Areas for Forest Damage Sites Using Forest Restoration Evaluation Indicators in Gangwon-Do)

  • 박윤선;송정은;박천희
    • 한국환경복원기술학회지
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    • 제27권1호
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    • pp.17-29
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    • 2024
  • This study was conducted to select the restoration priority of forest damage sites in Gangwon Province. We first identified the status of damaged areas. We then selected restoration evaluation indicators through a literature review. We then set weights for these indicators through expert surveys. We next acquired data that can represent these indicators and spatially mapped them. Finally, we prioritized the restoration target sites by taking the weights. The results of the study showed that disaster sensitivity and ecologicality are important criteria for selecting the restoration priority of damage sites. The analysis showed that damage sites in Doam, Jeongseon, Samcheok and Inje are in urgent need of restoration. The results of this study are significant in that they selected the restoration priority of damage sites in Gangwon Province based on the restoration priority evaluation criteria selected based on expert surveys. However, the priority restoration areas derived from the results of this study are not actually implementing restoration projects at present. Therefore, it is judged that it would be efficient in various aspects to establish the restoration priority area based on scientific analysis techniques and carry out the project for efficient implementation of the restoration project. In this study, it can be pointed out that the priority of restoration of damage sites was derived based on data from the past due to the limitation of data acquisition. However, the fact that the priority restoration area inferred based on past data has been restored over time has improved the reliability of the study by verifying the usefulness of the priority extraction technique. In the future, if the priority of damage sites is extracted by extracting the restoration target area boundary through the latest data based on the methodology applied in this study, it is considered that it will be available as a result that can be applied to the field.

지역 생태자산의 훼손 취약성에 대한 거주민의 인식 차이 - 경기도 파주지역을 대상으로 - (Understanding the Difference in Residents' Perception of the Vulnerability of Local Ecological Assets - Focused on Paju, Gyeonggi-do -)

  • 손용훈;이주경;김도은;권혁수
    • 한국조경학회지
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    • 제49권1호
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    • pp.31-41
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    • 2021
  • 본 연구는 최근 개발압력이 증가하여 생태자산 관리에 대한 많은 과제가 있는 경기도 파주시를 대상으로, 국립생태원에서 실시한 지역 주민 인식평가 조사 데이터를 활용하여, 지역 생태자산에 대한 거주민의 인식을 분석하였다. 연구에서는 가치관의 차이를 밝히는데 유용한 Q방법론을 적용하여 생태자산에 대한 주민들의 평가 성향을 구분하였으며, 성향에 따른 그룹별로 생태자산 훼손 취약성에 대한 인식 차이를 비교 분석하였다. 분석 결과, 파주시 주민 중에는 생태적으로 중요한 기능을 하는 습지나 기수역, 산림 등 자연자산을 우선 보전하고자 하는 '자연보전 그룹'과 왕릉 및 묘역 등 문화유산과 연계된 생태자산을 우선 보전하고자 하는 '유산보전 그룹' 등 크게 두 성향이 구분되었다. 두 설명그룹은 각 생태자산의 보전 인식, 활용 인식에 대해서는 차이가 있었지만, 훼손도 평가에서는 비슷한 성향으로 답했으며, 특히 25개의 생태자산 중 2개 자산을 제외하고 모두 개발압력을 받고 있다고 인식했다. 또한, 전반적으로 '자연보전 그룹'이 '유산보전 그룹'보다 생태자산의 훼손에 대해 적극적으로 인식하고 있었다. 생태자산 중에서는 산남습지, 특히 공릉천, 공릉천 기수지역, 심학산의 관리에 대해서 '자연보전 그룹'이 훼손 가능성에 대해서 문제로 인식하고 있었다. 본 연구는 각 생태자산에 대한 거주민들의 가치관의 차이를 보다 객관적으로 평가했으며, 연구의 결과는 파주시 생태자산 관리에 관한 의사결정에 유용한 자료로 활용할 수 있으리라 기대된다.

Implementation of Noise Reduction Methodology to Modal Distribution Method

  • Choi, Myoung-Keun
    • 한국해양공학회지
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    • 제25권2호
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    • pp.1-6
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    • 2011
  • Vibration-based Structural Health Monitoring (SHM) systems use field measurements of operational signals, which are distorted by noise from many sources. Reducing this noise allows a more accurate assessment of the original "clean" signal and improves analysis results. The implementation of a noise reduction methodology for the Modal Distribution Method (MDM) is reported here. The spectral subtraction method is a popular broadband noise reduction technique used in speech signal processing. Its basic principle is to subtract the magnitude of the noise from the total noisy signal in the frequency domain. The underlying assumption of the method is that noise is additive and uncorrelated with the signal. In speech signal processing, noise can be measured when there is no signal. In the MDM, however, the magnitude of the noise profile can be estimated only from the magnitude of the Power Spectral Density (PSD) at higher frequencies than the frequency range of the true signal associated with structural vibrations under the additional assumption of white noise. The implementation of the spectral subtraction method to MDM may decrease the energy of the individual mode. In this work, a modification of the spectral subtraction method is introduced that enables the conservation of the energies of individual modes. The main difference is that any (negative) bars with a height below zero after subtraction are set to the absolute value of their height. Both noise reduction methods are implemented in the MDM, and an application example is presented that demonstrates its effectiveness when used with a signal corrupted by noise.

지속가능한 전통마을의 유지와 관리방법론의 개발 - 한국과 일본의 비교 연구 - (A Development of Methodology for Maintenance and Management of the Sustainable Traditional Village in Korea - A Comparative Study of Korea and Japan -)

  • 강동진
    • 한국조경학회지
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    • 제29권5호
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    • pp.1-19
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    • 2001
  • This paper is designed to find and develop new concepts for the sustainable traditional village in Korea. To this end, it is necessary that concern for the traditional village should diversify and expand, and not concentrate solely on the cultural properties and architecture-oriented historic elements. In consideration of this notion, this paper suggests introduction of maintenance and management as a practical concept for the embodiment of the sustainable traditional village. This paper aims to explore the concrete maintenance and management systems of Korean and Japanese cases, to analyze differences and characteristics between the two nation\\\\`s, and through these comparisons, to suggest sustainable maintenance and management methods for the traditional village in Korea. Primary data was collected by field and interview survey on each village in the two nations several times during about a two year period. The major findings of this paper are presented in three categories--maintenance management frame, maintenance management contents, and necessary principles for progressive maintenance management, and are as follows; In the first step, suggests the basic directions, boundaries, and systems for the maintenance and management of sustainable traditional villages. And in the second step, analyzes the relationship among the contents of maintenance and management methods with focus on the village space, village attraction, and village community. Our results suggests diverse maintenance and management contents for the sustainable village maintenance and management. Finally, the basic principles for the application, and use as valuable tools for sustainable village maintenance and management, are strongly recommended.

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내륙 습지보호지역의 생태계 보전·관리 도구로서 시민과학연구 방법론 및 성과 제고 방안 - 습지보호지역 보전계획의 보전·관리·이용 목표를 중심으로 - (A Study on Method of Citizen Science and Improvement of Performance as a Ecosystem Conservation and Management Tool of Wetland Protected Areas (Inland Wetland) - Focused on the Target of Conservation·Management·Utilization in Wetland Protected Area Conservation Plan -)

  • 여인애;이창수;강지현
    • 환경영향평가
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    • 제32권6호
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    • pp.450-462
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    • 2023
  • 본 연구에서는 습지보호지역 보전계획을 달성할 수 있도록 습지보호지역의 생태계 보전관리 도구로서 시민과학연구 방법론을 제시하고 2022년부터 주민역량강화 사업이 추진되고 있는 습지보호지역 3개소(광주광역시 장록, 경남 고성 마동호, 고창 인천강하구 습지보호지역)를 대상으로 적용성을 검토하였다. 본 연구에서 제안한 시민과학연구 방법은 습지보호지역 보전계획에서 제시하고 있는 보전·이용·관리 목표에 근거하여 습지보호지역의 이해당사자와 그들의 주요 관심사 및 정보수요 파악 후, 각 주체별 정보 수요를 충족할 수 있는 성과물을 도출할 수 있는 연구 활동을 수행하고 시민과학자를 포함한 이해당사자에게 연구 성과를 환류 및 확산하는 절차이다. 본 연구에서는 해당 방법론을 적용하여 3개 습지보호지역에서 생태계 모니터링(생태계교란 식물 등 식물 모니터링, 육상곤충 및 포유류 흔적 조사, 신규 습지 발굴)을 실시하고 식물 16종, 육상곤충 43종, 멸종위기야생생물 I급 수달, II급 삵을 포함한 포유류 5종의 서식현황 정보를 취득하였다. 시민과학자들이 수집한 모니터링 정보를 활용하여 생태계교란 식물 분포지도 제작 후 소관 환경청 및 지자체에 관리 근거자료로 제공하여 시민과학연구의 정책 활용성을 제고하였다. 향후 본 연구에서 제안한 시민과학연구 방법론이 습지보호지역의 보전관리 도구로 정착하기 위해서는 시민과학연구 자료 축적, 정책수요에 부합하는 연구 성과의 도출과 함께 성과물의 정책 활용성과 사회·경제적 파급효과에 대한 검토가 면밀히 이루어져야 할 것이다.

개별차량 주행패턴 분석을 통한 교통사고 위험도 분석 기법 (Methodology for Evaluating Collision Risks Using Vehicle Trajectory Data)

  • 김준형;송태진;오철;성낙문
    • 대한교통학회지
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    • 제26권5호
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    • pp.51-62
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    • 2008
  • 최근 각종 센서 및 통신기술의 발달은 다양한 교통류의 정보를 실시간으로 수집하고 관리, 제공 할 수 있는 환경을 제공하게 되었다. 본 연구에서는 이러한 실시간 모니터링 환경에서 차량추종 및 차로변경 이벤트 발생 시 안전도를 평가할 수 있는 방법론을 개발하였다. 이를 위해 이미지 트랙킹을 통해 추출된 개별차량 주행 정보와 기존 교통상충분석기법을 응용하였다. 차량 간 안전거리 개념을 반영한 RSI(Real-time Safety Index)와 첨단안전차량의 효과 및 성능평가 등에 주로 사용되는 TTC(Time-to-Collision), 모멘텀 보존의 법칙을 이용한 충돌에너지 개념을 추출된 개별차량의 주행정보에 적용하여 교통사고 위험도를 분석하였다. 본 연구에서 제시된 방법론은 향후 교통사고 분석 및 실시간 안전평가를 위한 자료수집이 가능한 검지시스템의 개발과 평가 등에 효과적으로 활용될 것으로 기대된다.

지역규모의 지형경관 보전을 위한 상대고도 분석 방법론 제안 : 분석범위 설정을 중심으로 (Suggestion of the Relative Elevation Analysis Methods for Conservation of Local Topography : Focused on Analysis Range)

  • 송원경
    • 한국환경복원기술학회지
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    • 제17권5호
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    • pp.19-28
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    • 2014
  • Given the structure of Korean mountains, it is more appropriate to apply the relative elevation method than the absolute elevation method. However, so far there were not suitable quantitative methodologies to analyze relative elevation, these analytical concepts were difficult to be utilized in urban environmental planning. This study suggested three methods for analyzing relative elevation, and one method for setting the analytical scope of relative elevation by calculating terrain relief. The results showed that the procedure considering 500m radius of each point and standardizing to 30% of the 7th height ridge was the most effective method to extract the local topography. This methodology is the quantitative tool to be able to conserve local important hills and ridges, and apply to fields of urban environmental planning and ecological restoration, especially urban ecological network.