• Title/Summary/Keyword: Conservation methodology

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Resilience and Resistance of Biological Community : Application for Stream Ecosystem Health Assessment (생물 군집의 회복력 및 저항력 : 하천생태계 건전성 평가를 위한 응용성)

  • Ro, Tae-Ho
    • Journal of Environmental Policy
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    • v.1 no.1
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    • pp.91-110
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    • 2002
  • Ecosystem health assessment is an emerging concept regarded as a useful diagnostic tool for evaluating ecosystems. The stability of ecosystem is the main theme in the assessment. Generally, two components - resilience and resistance - are involved in the mechanism of ecosystem stability. In this study, relative degrees of the resistance and the resilience were quantified for most aquatic Insects Inhabiting running waters in Korea. A total of 34 groups were newly categorized based on previous studies, and a conceptual model has been produced. The model was applied for the aquatic insect communities inhabiting different streams and demonstrated that each stream ecosystem possessed different degrees of stability. This study also indicated that it was possible to compare stabilities of different ecosystems using relative degrees of resilience and resistance. Using the conceptual model, suitable conservation and management strategies could be recommended in ecological assessments. The model can be used as a stepping-stone for developing more comprehensive methodology that objectively diagnoses and evaluates the ecosystem stability.

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Landscape Ecology Concept, Principles and Its Rlation to Monothematic (e.g. Vegetation) Survey (경관생태학의 개념, 원리 및 식생조사와의 관계)

  • Isaak, S. Zonneveld
    • The Korean Journal of Ecology
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    • v.21 no.4
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    • pp.357-372
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    • 1998
  • Land (scape) ecology is a trans-disciplinary science studying the related systems at the earth surface, in their visual, structural and functional aspects. it serves as an umbrella under which abiotic and biotic sciences, in an integrated way, study the for each relevant land attributes and their interrelations. The spatial aspects of these relations have a special interest. Landscape ecology my have a pure scientific purpose, but usually is executed in an applied context, related to land evaluation for land use and conservation. Depending on the aim and application of the study, one of the land attributes may get special attention. Vegetation mapping may contribute to landscape ecological study but also benefit from it especially in case of reconnaissance surveys. This is because in less detailed surveys of any land attribute, like land form, soil, vegetation, one must necessarily apply landscape ecological principles in the survey methodology, including remote sensing.

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Development and Roles of Landscape Ecology as An Emerging Opportunity for Ecology (생태학의 새로운 분야로서 경관생태학의 발전과 역할)

  • 홍선기;이창석
    • The Korean Journal of Ecology
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    • v.20 no.3
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    • pp.217-227
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    • 1997
  • Landscape ecology is an emerging interdisciplinary ecology field to understand the holistic human and natural systems on the basis of concept and database obtained from pure ecology. Landscape ecology is an integrated ecology widely available for environmental science such as nature conservation and sustainable land-use planning. It is also a practical study as an applied ecology to restore and to manage local environment. Landscape ecological study is realized by embodiment of human disturbance system which is rigorously extending on natural system. Considering Korean status without landscape ecological studies, we briefly reviewed establishing process, study goal and methodology of landscape ecology as well as the related several concepts through current landscape ecological studies in the world. We hope that this paper will be helpful to ecologists having interest in landscape ecology.

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A Comparison of Embodied Energy and Environmental Impact on the New Building and Remodelling of Construction Types in Apartment Housing (공동주택의 신축공사와 리모델링 공사에 공종별 에너지 소비량 및 환경영향 비교 연구)

  • 이강희
    • Journal of the Korean housing association
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    • v.14 no.5
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    • pp.65-74
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    • 2003
  • Recently, the environmental conservation has been emphasized over the world. Building industry should carefully reflected the development focused on the economic aspect as well as the environmental considerations. Therefore, it requires the technology development to mitigate the environmental pollution through the reducement of the energy and resources usage amount over the building life cycle. For these, it should be required to set up the analysis methodology to grasp the amount of the environmental pollution and energy and resources in each step of building life cycle. In this paper, it aimed at preparing the analysis process and analyzing the embodied energy and $CO_2$ and $SO_x$ emission according to the building work, field work, mechanical and electrical work on the new building and remodelling, utilizing the inventory analysis which is one of the LCA process.

Ghost Junction Method for Flow Network System Analyses (유동망 시스템 해석을 위한 유령 정션 기법)

  • Hong, Seok-Woo;Kim, Chong-Am
    • 한국전산유체공학회:학술대회논문집
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    • 2008.03b
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    • pp.626-629
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    • 2008
  • Numerical predictions on flow phenomena in pipe network systems have been considered as playing an important role in both designing and operating various facilities of piping or duct systems, such as water supply, tunnel or mine ventilation, hydraulic systems of automobile or aircraft, and etc. Traditionally, coupling conditions between junction and connected branches are assumed to satisfy conservation law of mass and to share an equal pressure at junction node. However, the conventional methodology cannot reflect momentum interactions between pipes sufficiently. Thus, a new finite volume junction treatment is proposed both to reflect the interchanges of linear momentums between neighbor branches at junction and to include the effect of wall at junction in present work.

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A Research the Optimal Plant Life Cycle using Case Study (사례를 통한 최적 라이프 사이클에 관한 연구)

  • 심종칠;김창은;고용해
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.18 no.34
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    • pp.83-89
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    • 1995
  • We call as plant life cycle the process starting from plant plan, design to disuse by way of construction, operation, but the plant facility inside it comes to changes of cope with various inner factor like blazing phenomenon and outer factor according to economic state. On the presumption of these factors, the problem is brought about how plant should be managed, this study attempt to suggest the conservation management through economic evaluation in investment design and alternative, that is, methodology connecting that of economical efficiency evaluation based on LCC(Life Cycle Costing) thinking method and facility management with that of life prediction.

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Power Flow Solution Using an Improved Fitness Function in Genetic Algorithms

  • Seungchan Chang;Lim, Jae-Yoon;Kim, Jung-Hoon
    • Journal of Electrical Engineering and information Science
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    • v.2 no.5
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    • pp.51-59
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    • 1997
  • This paper presets a methodology of improving a conventional model in power systems using Genetic Algorithms(GAs) and suggests a GAs-based model which can directly solve the real-valued optimum in an optimization procedure. In applying GAs to the power flow, a new fitness mapping method is proposed using the proposed using the probability distribution function for all the payoffs in the population pool. In this approach, both the notions on a way of the genetic representation, and a realization of the genetic operators are fully discussed to evaluate he GAs' effectiveness. The proposed method is applied to IEEE 5-bus, 14-bus and 25-bus systems and, the results of computational experiments suggest a direct applicability of GAs to more complicated power system problems even if they contain nonlinear algebraic equations.

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Methodology of Climate-Ecological Priority Area Analysis for Air Corridor Planning - In the Case of Pan-Gyo Area - (바람통로 계획을 위한 기후생태적 우선지역 분석 및 설정 방법 - 성남 판교지역을 중심으로 -)

  • 송영배
    • Journal of the Korean Institute of Landscape Architecture
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    • v.31 no.3
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    • pp.58-73
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    • 2003
  • It is well known that urban environment affects climate, as we can see in the quality of bio-climate. However, climate has not been recognised properly in the urban planning process. The role it flays needs to be examined for better urban environment. The main objective of this study is to investigate the climate-ecological priority area which produces cold fresh air and thermal induced wind circulation between rural and urban areas. The objective is also to improve the quality of bio-climate and wind circulation at blocked urban areas. This paper uses the measurement and analysis method of wind direction and wind speed in order to investigate the climate-ecological priority area and cold fresh air corridor. In this study, local climate conditions i.e. wind speed, wind direction, temperature, humidity etc., were measured at nine fields and analyzed. On the basis of the climate measurement, the climate ecological priority areas were delineated; These will be assigned as climate-ecological conservation areas.

Habitat Evaluation of Japanese Black Bear using GIS

  • Masuyama, Tetsuo;Yamamoto, Toshiharu;Hara, Keitarou;Yasuda, Yoshizumi
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1134-1136
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    • 2003
  • In this research, GIS based evaluation methods were applied to habitats of Japanese black bear (Ursus thibetanus japonicus Schlegel) in northern Honshu. The study area was divided into 828 small watershed units , and five GIS indexes, Vegetation Type(V.T.), Extent of Forest Cover (E.F.C.) Slope Incline (S.I), Average Altitude (A.A.) and Road Density(R.D.), were used to evaluate each watershed unit in terms of suitability as black bear habitat. In addition, Interspersion and Juxtaposition spatial indices were calculated for each watershed unit. The results clearly identified the regions with the most suitable habitats, indicating that this methodology is suitable for application to various environmental planning efforts, such as regional development master plans, project-specific environmental impact assessments, species management plans and biodiversity conservation plans.

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Impacts of Uncertainty of Water Quality Data on Wate Quality Management (수질자료의 불확실성이 수질관리에 미치는 영향)

  • Kim, Geonha
    • Journal of Korean Society on Water Environment
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    • v.22 no.3
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    • pp.427-430
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    • 2006
  • Uncertainty is one of the key issues of the water quality management. Uncertainty occurs in the course of all water quality management stages including monitoring, modeling, and regulation enforcement. To reduce uncertainties of water quality monitoring, manualized monitoring methodology should be developed and implemented. In addition, long-term monitoring is essential for acquiring reliable water quality data which enables best water quality management. For the water quality management in the watershed scale, fate of pollutant including its generation, transport and impact should be considered while regarding each stage of water quality management as an unit process. Uncertainties of each stage of water quality management should be treated properly to prevent error propagation transferred to the next stage of management for successful achievement of water quality conservation.