• 제목/요약/키워드: Habitat Evaluation Procedure

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도시에 서식하는 원앙과 오색딱다구리의 서식 적합성 지수(HSI) 모델 개발 (Development of Habitat Suitability Index (HSI) Model for Mandarin duck (Aix galericulata) and Great spotted woodpeckers (Dendrocopos major))

  • 박준영;송영근
    • 한국환경복원기술학회지
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    • 제24권1호
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    • pp.37-51
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    • 2021
  • The purpose of this research is to develop the Habitat Suitability Index (HSI) for habitat environments of Aix galericulata (A. galericulata) and Dendrocopos major (D. major), which tend to inhabit urban environments. A. galericulata and D. major are the keystone species representing the ecosystem of wetlands and forests. Based on the analysis of their urban habitat environments, this study selects artificially adjustable levels of the environmental index in order to produce the HSI model, which can be used when either restoring or creating the urban habitats for these species. To develop the HSI, we conducted field surveys at Jungnangcheon Stream, Changgyeonggung, Jangneung, Bangbae Neighborhood Park, Gildong Ecological Park, and Seodalsan Mountain. These surveys were conducted between April and August 2020, and this period includes the breeding season of both A. galericulata and D. major. Based on our findings from the surveys, we conclude that there are six SI factors for A. galericulata. These include (1) the presence of alluvial islands, (2) waterfront vegetation cover rate, (3) type of aquatic plants for food, (4) size of forest patch, (5) type of trees in nearby forests, and (6) connectivity of waterfront and forest. We also conclude that there are five SI factors for D. major, which include (1) size of forest patch, (2) rate of broadleaf trees in forest patches, (3) type of nesting trees, (4) diameter at breast height (DBH) of nesting trees, and (5) density of dead trees. The result of this research can provide future studies with useful guidance when both (1) comparing the habitat suitability of the target species in different environments and (2) restoring or creating habitats for these species.

중부 산림지역 내 도롱뇽 서식지 적합성 지수(HSI)에 관한 연구 (A Study on the Habitat Suitability Index (HSI) of 'Hynobius leechii' in Central Forest Area, Korea)

  • 고규영;구본학
    • 한국습지학회지
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    • 제24권4호
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    • pp.213-223
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    • 2022
  • 본 연구는 유미목 양서류인 도롱뇽(Hynobius leechii)의 생태 및 서식환경에 대한 문헌연구와 현장조사를 통해 서식지 적합성 지수(Habitat Suitability Index, HSI)를 설정하여 서식환경의 질적 평가 기초자료로 활용하기 위한 목적으로 수행하였다. 조사지역은 중부 산림지역 내 서식지 원형에 가까운 자연 서식지와 도롱뇽 출현이 모니터링된 인공 복원지로 구분하여 서식지 유형을 다양화하였다. 도롱뇽은 미소 서식 환경적 특성으로 이동이 제한되어 기후변화에 취약하고 산림개발 등으로 서식지 감소가 빠르게 진행되고 있다. 도롱뇽 HSI 설정을 위해 문헌연구로 변수를 설정하고, 문헌조사와 현장조사에서 추출된 값으로 세부기준을 설정하였다. HSI 변수와 세부기준은 현실에서 적용 가능한 물리적 허용범주의 값을 제시하였고, 연구의 검증을 위해 양서류 전문가의 심층 설문을 실시하였다. 도롱뇽 HSI 변수는 상층부 수관율(%), 하층부 피복율(%), 수중pH, 토양pH, 토양습도(%), 낙엽두께(cm), 하상 암석피도(%), 수목잔존물 유형, 위협요인(m)의 9개 변수로 선정되었다.

맹꽁이 서식처 복원을 위한 서식처 적합성 지수(HSI) 개발 (Development of Habitat Suitability Index for Habitat Restoration of Narrow-mouth Frog(Kaloula borealis))

  • 심윤진;조동길;박소현;이동진;서윤희;김상혁;김덕호;고상범;차진열;성현찬
    • 한국환경복원기술학회지
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    • 제17권2호
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    • pp.109-123
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    • 2014
  • Kaloula borealis is the species of Amphibia which belongs to Kaloula genus and it is the only species inhabiting in Korea. The population size and habitat of Kaloula borealis have been significantly decreased on a national scale due to the diversified developments and the uses of agricultural pesticides. Accordingly, the Ministry of Environment has designated and managed them as the class II of endangered species, in accordance with "Endangered Species Protection and Management Act"; however, a particular study focused on the ecological restoration of Kaloula borealis is desperately needed to prevent their extinction. This study was conducted to propose the HSI (Habit Suitability Index) of Kaloula borealis based on literature survey on ecology and habitats of Kaloula borealis, as well as their HSI. Factors to be investigated in HSI include: space, feed, cover, water(breeding) and threatening factors and the variables of each factor were also proposed. The distance from wetland, grassland, farm, stream and rice paddy, as well as the altitude of spawning pond were proposed as the variables of space, whereas the bed structure of forest and low-rise grassland were proposed as the variables of feeding. The variables of water (breeding) include the area of permanent and temporary wetlands, coverage of emerged pants (ratio of open water), water depth, water temperature, water quality, pH level, etc., whereas the presence of predator, distance from street and pollutants were proposed as the variables of threatening factor. The sub-standards by HSI factor of Kaloula borealis have been drawn from in-depth consultation with experts and based on this, the final HSI of Kaloula borealis was developed.

The Chinese Performance-based Code for Fire-resistance of Steel Structures

  • Li, Guo-Qiang;Zhang, Chao
    • 국제초고층학회논문집
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    • 제2권2호
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    • pp.123-130
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    • 2013
  • In the past two decades, researchers from different countries have conducted series of experimental and theoretical studies to investigate the behaviour of structures in fire. Many new insights, data and calculation methods have been reported, which form the basis for modern interdisciplinary structural fire engineering. Some of those methods are now adopted in quantitative performance-based codes and have been migrated into practice. Mainly based on the achievements in structural fire research at China, the Chinese national code for fire safety of steel structures in buildings has been drafted and approved, and will be released in this year. The code is developed to prevent steel structures subjected to fire from collapsing, ensure safe evacuation of building occupants, and reduce the cost for repairing the damages of the structure caused by fire. This paper presents the main contents of the code, which includes the fire duration requirements of structural components, fundamental requirements on fire safety design of steel components, temperature increasing of atmosphere and structural components in fire, loading effect and capacity of various components in fire, and procedure for fire-resistant check and design of steel components. The analytical approaches employed in the code and their validation works are also presented.

의왕시 오봉산 육교형 생물 이동통로 모니터링에 의한 관리 및 개선방안 (A Study on Improvement and Administration of Ecoduct through Monitoring in Uiwang's Mt. Obong)

  • 전익요;한봉호;홍석환;이경재
    • 한국조경학회지
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    • 제34권1호
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    • pp.10-20
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    • 2006
  • This study is to introduce the improvement and management of Ecoduct located in Uiwang's Mt. Obong, Gyeonggi province. The inner planting of Ecoduct is not very related to the flora of mountain areas nearby. The difference in the index of plant crown volume(GVZ), the similarity index(S.I.), and monitored animals is significant between Ecoduct and mountain areas. Putting together all of the results, the initial selection of movement and target species is excessive in number. Target species must be selected again. They will be species that are currently found on the site. The Ecoduct space must be divided into two parts: buffer planting space and wildlife corridor. Reforestation is needed since the GVZ is remarkably lower in Ecoduct than in the nearby mountain areas. Besides the vegetation of Ecoduct is densely planted in guidance planting space to connect the southern Quercus mongolica community and the northern Quercus acutissima community. Proper upkeep after construction should be continuously conducted to maintain the procedure of natural change.

어구 관리를 위한 보증금제 실행방안 연구 (A study on the implementation plan of deposit system for management of fishing gear)

  • 강동양;김성훈;이경훈;이유원
    • 수산해양기술연구
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    • 제59권4호
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    • pp.377-386
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    • 2023
  • As discarded fishing gear settles or floats on the seabed, it destroys the spawning and habitat of fisheries resources that causes various safety accidents and adverse effects on the environment, such as generating microplastics and causing ship accidents. In order to solve this problem, this study is intended to present an implementation plan for establishing a fishing gear deposit system in order to use it as basic data for establishing policies for fishing gear management in Korea. In order to successfully implement the fishing gear deposit system, the deposit system must be established in the form of fishing gear completed at the production stage. It was found that the marking of the object should be easy, and that determining an appropriate deposit amount to motivate the return of waste fishing gear and establishing a convenient return procedure for returned waste fishing gear were important factors. In addition, transparent management of unreturned deposits and mandatory use of fishing gear subject to the deposit system for fishermen will be necessary. The role of a specialized organization to manage and operate all of these procedures is also very important. It is necessary to establish a new mandatory provision in the Fisheries Act to require fishermen who directly use fishing gear to use fishing gear with a deposit refund mark, and to ensure the implementation of the deposit system by linking it with the evaluation items of government policy projects. Since the main purpose of the deposit system is to collect discarded fishing gear, a support plan will be necessary in accordance with the purchase project for fishing waste salvaged by local governments in 2020.