• 제목/요약/키워드: ecological survey

검색결과 1,185건 처리시간 0.025초

저수지 수변 식생 건강성 평가 (The Vegetation Health Assessment in Riparian Vegetation of Lake Reservoirs)

  • 김형대;구본학
    • 한국환경복원기술학회지
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    • 제19권6호
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    • pp.111-121
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    • 2016
  • This study was carried out to assess the riparian vegetation health in the fluctuation area and vicinity of reservoirs. The results of this study could be a basic data to improve the ecological function and establish green-network of waterside ecosystem. The study site is Daecheong lake reservoirs which the representative landscape of Geum river and with great number of visitors near metropolitan city. The 6 survey plots of 2 survey area were selected, survey area 1 had 4 survey plots and survey area 2 had 2 survey plots, and to compare the study results 4 control plots were selected in Gyeongcheon reservoir. The main dominant specie of survey sites was Salix koreensis in tree and subtree layer, were Salix koreensis and Salix glandulosa. in shrub layer. 2 survey plots of Samjeongdong and Kyeongcheon reservoir were assessed as 'Good', 2 survey plots of chudong were assessed as 'Fair' in vegetation health assessment. In the fluctuation area from flood water level to low water level, 58 populations of Salix koreensis were found in survey sites and Salix koreensis, Salix glandulosa and Acer tataricum subsp. ginale were found in control sites. The most adequate species at the condition affected by inundation impacts would be Salix koreensis and Salix glandulosa was more healthy at the area less affected by inundation. This study was carried out the vegetation health assessment on Daecheong reservoir which has been advanced natural succession for more than 30 years after the construction. Further, it should carry continuously out the research on the planting model of the waterside ecosystem for ecological restoration.

Current status of alert alien species management for the establishment of proactive management systems in Korea

  • Son, Seung Hun;Jo, A-Ram;Kim, Dong Eon
    • Journal of Ecology and Environment
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    • 제45권4호
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    • pp.237-254
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    • 2021
  • Background: Some of the introduced alien species introduced settle, multiply, and spread to become invasive alien species (IAS) that threaten biodiversity. To prevent this, Korea and other countries legally designate and manage alien species that pose a risk to the environment. Moreover, 2160 alien species have been introduced in South Korea, of which 1826 animals and 334 plants are designated. The inflow of IAS can have negative effects such as ecosystem disturbance, habitat destruction, economic damage, and health damage to humans. To prevent damage caused by the inflow of IAS in advance, species that could potentially pose a risk to the environment if introduced in South Korea were designated as alert alien species (AAS). Results: The designation criteria were in accordance with the "Act on the Conservation and Use of Biological Diversity" and the "Regulations on the Ecological Risk Assessment of AAS and IAS" by the National Institute of Ecology. The analysis result of risk and damage cases indicated that mammals affect predation, competition, human economic activity, virus infection, and parasite infection. Birds have been demonstrated to affect predation, competition, human economic activity, and health. It was indicated that plants intrude on the ecosystem by competing with native species with their high-population density and capacity to multiply and cause allergic inducement. Interestingly, 300 species, including 25 mammals, 7 birds, 84 fishes, 28 amphibians, 22 reptiles, 1 insect, 32 spiders, 1 mollusk, 1 arthropod, and 99 plants, are included in the list of AAS. Conclusions: AAS designation plays a role in preventing the reduction of biodiversity by IAS in South Korea and preserving native species. Moreover, it is determined to provide considerable economic benefits by preventing socio-economic losses and ecological damage.

농촌지역과 소도시간 학교 생태연못 특성 비교분석에 관한 연구 (A Comparative Study on the Ecological Pond in School between rural area and small town)

  • 윤용기
    • 교육녹색환경연구
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    • 제11권1호
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    • pp.11-22
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    • 2012
  • This study aims to investigate and analyze the actual conditions of the ecological ponds built in the campus sites of the elementary, middle and high schools which currently manage ecological ponds in order to find problems and directions for improvement concerning the management of the ponds as a way to build nature-friendly ecological ponds which can be used as an ecological work-study site on school campus: this study also intends to provide systematic and technological directions for the management and operation of the ecological pond. This study has selected 10 schools in North Chungcheong Province, where ponds are constructed, and investigated actual conditions of the ponds based on the survey, analysis, and evaluation standards compatible with the school environments, and finally judged the general relevancy of the ponds. The results of this study make us conclude that the most important issue to be considered in the processes of selection and investigation for school ecological pond is the location of the pond.

우리나라 해안사구의 현황과 사회·경제적 특성 고찰 (Study on the Status and Socio-Economic Characteristics of Coastal Sand Dune in South Korea)

  • 강지현;서종철;류호상;김태석;오정식;이재호;오수정;안세진
    • 한국지형학회지
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    • 제24권3호
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    • pp.149-159
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    • 2017
  • Coastal dunes have many environmental and ecological socio-economic importances; various human activities, however, have impaired their structures and functions over the years. In 2016, environmental survey on coastal sand dune was carried out to report the present status and update the coastal sand dune list in 2001. This research analyzed the survey data in terms of geomorphological and socio-economic aspects. A list of the 189 coastal sand dune and information was updated by province. A 36.5% reduction in coastal sand dune area have been identified for using agricultural land, development area since the approximately 1940-50s. Development area in coastal sand dune covered small area as 5%, the use intensity was relatively hard. Furthermore, the difference by province also showed. Approximately 80% of the development area was concentrated in 20% of total sand dune several sand dune. It is generally accepted that coastal sand dunes were exposed high development pressure. However the result means that the general brief dose not apply for all sand dune. Therefore, characteristics of each sand dune should be analyzed and concerned the diverse management plans.

도시하천의 생태적 재생계획에 관한 연구 - 안양시 수암천을 대상으로 - (A Study on the Ecological Rehabilitation Plan for Urban Stream - Focused on Suam Stream in Anyang City -)

  • 최정권
    • 한국환경복원기술학회지
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    • 제13권6호
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    • pp.133-144
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    • 2010
  • The objective of this planning proposal is to rehabilitate the urban stream which has been ecologically disturbed in the urban process. The experimental stream, Su-am stream located in Anyang City is typical urban stream in adjacent land use and the spatial condition. The stream in the watershed context, is the second tributary of Han River, in the Anyangcheon watershed. The Characteristics of the stream reach were analyzed by the river corridor survey. In the conceptual phase, Rehabilitation Programs were established based on the hydrological, ecological and spatial characteristics of the stream. Spatial zoning concept according to the characteristics of the stream and adjacent land use, was suggested 4 types of zoning; ecological preservation zone, natural landscape zone, neighborhood water-friendly zone and CBD water-friendly zone. Implementation Practices can be summarized as follow: For The longitudinal river continuum, some In-stream practices were suggested and implemented; such as channel alignment, step & pool, pool & riffle and low-flow channel bank. For latitudinal continuum and intimate spatial relationship between Sam-duk Park & Su-am stream, gentle sloped bank was planned and implemented. After stream improvement & ecological Implementation, follow-up monitoring and adaptive management programs will be a meaningful process for ecological rehabilitation.

환경인자에 따른 소나무림의 생태적 지위에 관한 연구 (A Study on Ecological Niche of Pinus densiflora Forests according to the Environmental Factors)

  • 서동진;오창영;우관수;이재천
    • 한국농림기상학회지
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    • 제15권3호
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    • pp.153-160
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    • 2013
  • 본 연구는 온대 남부, 중부, 북부지역의 소나무림을 대상으로 기상인자, 생육인자에 대해 생태적 지위폭(ecological niche breadth)을 분석하였으며, 향후 기후 변화에 따른 소나무림 분포에 미치는 환경 인자를 규명하기 위해 수행하였다. 2010년 9월부터 10월까지 강릉, 정선, 평창, 함양, 봉황, 영양, 울진, 의성 보성 9개 지역에 $20{\times}20m$의 방형구를 설치하여 수고, 흉고 직경, 지하고, 수관폭, 흉고단면적을 생육인자로 이용하였으며, 기상인자는 최저기온, 평균기온, 최고기온, 습도, 강수량을 조사지역에서 가장 가까운 관측소의 측정값을 이용하였다. 5가지 기상인자에 대한 생태적 지위폭은 습도를 제외한 기상인자에서 생태적 지위폭이 낮게 나타났으며, 기상변화에 따른 소나무의 분포역이 한정될 가능성이 높아지는 것으로 해석할 수 있다. 또한 강수량과 기온변화가 소나무림의 분포에 더 큰 영향을 주는 것으로 판단되며, 특히 최고기온의 경우 대부분의 조사지역에서 0.4이하의 낮은 생태적 지위폭을 보였다. 하지만 5가지 생육인자에 대한 생태적 지위폭은 모든 조사지역에서 높게 나타났으며, 이는 소나무가 환경변화에 적응하여 분포역이 넓다는 것을 의미하는 것으로 기상인자와는 상반되는 결과를 보였다. 이러한 결과의 원인은 생육인자의 경우 과거 안정된 환경에 적응하여 지속적으로 생장하였기 때문에 생육 내성의 범위가 커 소나무의 생태적 지위폭이 넓게 나타났으며, 반대로 기상인자의 경우 지속적인 지구온난화의 결과로서 소나무가 생육하기 어려운 조건으로 변하기 때문으로 판단되며, 향후 기온상승으로 인한 소나무림의 분포지역의 감소가 지속적으로 이루어질 것으로 전망된다.

생태·자연도 이의신청지역의 원인 분석 (The Analysis on Causes of Areas with Public Appeals to the Ecosystem and Nature Map)

  • 정태준;송일배;이지선;이성제;조광진;송교홍;김기동;차진열;조장삼;임효선;정해정
    • 한국환경복원기술학회지
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    • 제20권1호
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    • pp.25-34
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    • 2017
  • The objective of this study is to seek for improvement measures to make the Ecosystem and Nature Map by analyzing causes for grade changes and distributional characteristics of areas with public objections to the Ecosystem and Nature Map notified by e-official gazette from 2014 to June 2016. The receipt of public appeals has been recently increased from average 23 cases a year(2007-2013) to average 33 cases a year(2014-June 2016) while there were 42 areas with public appeals for less than the minimum area($62,500m^2$) for the evaluation of grade of the Ecosystem and Nature Map. Most of the public appeals focused on the 1st grade zone of the Ecosystem and Nature Map. Before grade changes by public appeals, the 1st grade zone of the Ecosystem and Nature Map were 76.0% of the whole areas with public appeals. However, after grade changes by public appeals, it was rapidly decreased to 25.2%, which means that a lot of the 1st grade zone with public appeals were lowered. In the results of analyzing the distributional characteristics of areas with public appeals, they were mostly distributed in lowland(less than 250m altitude), section with $10{\sim}20^{\circ}$ slope, and areas close to or within 100m from built-up area. Regarding areas with public appeals, the biggest time difference between the period of the existing research by National Ecosystem Survey and the period of notice after completing the treatment of public appeals was 18 years while areas showing 6-15 years of time difference were about 70%. Thus, there were huge differences in time of research and notice. Also, the biggest causes for grade changes were boundary errors caused by small-scale survey, and then followed by changes in evaluation of endangered species and occurrence of built-up area and damaged land. Analyzing areas with public appeals in each evaluation item of the Ecosystem and Nature Map, vegetation part was 73.0%, and endangered species area was 23.1% while topography and wetland was less.

생태건축에 관한 개념적 고찰과 접근방안 (A Conceptional Survey and Approaching to the Ecological Building Design)

  • 김경호
    • 한국주거학회논문집
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    • 제15권2호
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    • pp.35-42
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    • 2004
  • This study is to investigate the various concepts of ecology for developing the perspectives and approaching guidelines to the ecological building design. The concepts of ecology may be some background to the environmental issues within architecture. While there are many words which mean environmentally-friendly architecture, ecological building design to which I refer here is the ecocentric and holistic design rather than the anthropocentric and mechanical one. Ecological and social systems are open, interacting, and unpredictable. So we should leave room within our planning of architectural project and in construction of new housing development for nature's unpredictable events. The approach to ecological building design might be the holistic perspectives, the respect of place and participation of people, to admit the complexity and diversity. The world in which we are living is highly unstable.

태백산국립공원 백두대간 생태축 연결을 위한 평가항목 및 가중치 설정 (Evaluating the Criteria and Weight Value for Ecological Network Connectivity of Baekdudaegan Mountain Range on Taebaeksan National Park)

  • 신지훈;김혜리;장수림;김학윤;노백호
    • 한국환경생태학회지
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    • 제33권3호
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    • pp.292-302
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    • 2019
  • 본 연구는 태백산국립공원 백두대간 생태축 연결을 위한 평가항목 및 요인별 가중치 설정을 위해 공원관리와 생태계조사, 생태환경계획과 관련된 분야별 전문가 대상의 설문조사를 토대로 계층화 분석을 실시하였다. 문헌연구와 담당자 면담조사로 생태축 연결을 위한 상위 평가지표 4개와 하위 평가지표 13개를 선정하였으며, 일관성 분석에 의한 유효설문을 대상으로 항목별 가중치를 산정하였다. 분석결과, 상위평가 지표에서는 생태계 가치증진이 0.474로 가장 높고, 자연-인간 갈등완화(0.247), 지역주민의 참여(0.165), 경제적 측면(0.114) 순으로 나타났으며, 하위 평가지표에서는 생물이동경로(0.116), 경관생태적 패치 연결성(0.112), 기능적 서식지(0.099) 등이 중요 항목으로 추출되었다. 분야별 평가항목과 가중치 비교에 따르면 생태계조사 분야에서는 생물종 이동경로(0.116)을 가장 중시하는 반면, 공원관리 분야에서는 기능적 서식지가 0.110로 가장 중요한 항목으로 평가되었으며, 생태환경계획 분야에서는 지역의 보전 및 이용자원 분포현황이 0.123으로 가장 높게 나타났다. 본 연구결과는 태백산국립공원 일대의 생태축 연결에 필요한 조사항목의 선정이나 분야별 연결성 분석방향 설정에 기여할 것이다.

초등학생의 식물에 대한 경험 분석 및 생태적 소양과의 관계 (Analysis of Children's Experiences in Plants and Their Relationship with Ecological Literacy)

  • 주은정;김재근
    • 한국초등과학교육학회지:초등과학교육
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    • 제32권4호
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    • pp.404-414
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    • 2013
  • This study was conducted for investigating the characteristics of children's experiences in plants and their relationship with ecological literacy. 578 primary students participated in our survey, who consisted of 240 urban and 338 semi-rural children. The questionnaire for this study was composed of items about their experiences in plants and ecological literacy. Children's experiences in plants were classified to 5 factors; indirect/observable, living, investigative, negative, and active experiences in plants. The most important factor of them is indirect/observable experience which tends to be passive. Children's ecological literacy and experiences in plants were not different with a place of residence but had difference with sexual. Most children's experiences in plants had correlation with ecological literacy. Ecological sensibility was the most important variable for explanation of the relation between children's ecological literacy and experiences in plants. It is recommended that supplying experiments in plants to children is important for promoting their ecological literacy.