• 한국자원식물학회지
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• 제20권6호
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• pp.570-578
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• 2007

In order to investigate the basic vegetation information for the efficient management of the Sorbus commixta habitat in Korea, 31 plots in Mt. Chiri area were selected of which vegetation types were classified in phytosociological method and ecological characteristics were identified. As a result, the habitat was classified as S. commixta community group which was then subdivided to Prunus padus group and Picea jezoensis group. Prunus padus group was classified in Ainsliaea acerifolia subgroup and Magnolia sieboldii subgroup, while the Picea jezoensis group was classified in Rhododendron mucronulatum subgroup and Echinopanax horridum subgroup. Thus, the forest vegetation of S. commixta was classified in 1 community, 2 groups and 4 subgroups, and found to have 4 vegetation units in total.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2007년도 추계학술발표대회 논문집
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• pp.214-215
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• 2007

This project was designed to create a warmth space for Kwacheon House. To create warmth space, four factors - Natural Habitat, Timeless Comfort, Exotic Exuberance, Luxe Living - were hired to design concepts. At first, the walls were remained to support structure and to keep privacy and others were removed to draw in light to the inner space. Light is the main element to have variation and natural space. Ornaments that were motived by nature, were accepted in moulding, furniture and fixture to enhance the comfort. At last, classical lightings added up to harmonize between day and night.

• 한국패류학회지
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• 제30권3호
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• pp.259-271
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• 2014

This study was conducted to investigate the impact of sand addition to an intertidal for the development of the Manila clam habitat on benthic community structure. For this, we focused on the spatio-temporal changes in the surface sediment condition and benthic community structure including Manila clam before and after the event. Study site was the lower part of Ojjeom tidal flat in Gonam-myeon, Taean-gun where sand added to on July 2010. We set three stations at each of sand adding area (experimental plot) and non sand-adding area (control plot) and did sampling works ten times from June 2010 to October 2011. Directly after the event, surface sediments changed to very coarse sand, but the state was not maintained over two months because of seasonal sedimentation and finally got back to the original grain sizes in eight months. The number of species and density were temporarily reduced right after the event and polychaetes such as Sternaspis scutata, Ampharete arctica were most negatively affected by the event. However, the number of species and density quickly recovered from the reduction in four to six weeks owing to the recolonization by the existing species and species in the vicinity of the plot. However, despite the recovery of ecological indies, species composition was continuously changed from one to another, thereby community structure stayed unstable condition, especially in some stations with finer sediment in their original condition. After sand addition, density of Manila clam was prominently increased at only one station with coarser sediment in its original condition.

• 국제초고층학회논문집
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• 제1권3호
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• pp.221-228
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• 2012

Shanghai Tower is a super high-rise building of 632 m height with 'mega frame-core- outrigger truss' structure system. Due to the complexity and irregularity of structure, shaking table test was carried out to investigate its seismic performance. A 1/40 scaled test model was designed, built and tested on shaking table under earthquake of small, moderate and large levels. The experimental results showed that the structure can meet the requirements of Chinese codes and reach scheduled performance objectives. Elastic and plastic time-history analysis on the structure were carried out and the results were compared to experimental results. Based on the research results some suggestions were proposed to contribute favorable effect on the seismic capacity of the structure.

• 한국환경농학회지
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• 제33권4호
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• pp.334-343
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• 2014

본 연구는 봄철 논습지에 도래하는 도요 물떼새류의 도래패턴과 서식지 이용 특성을 파악하고자 수행되었다. 조사는 한국 중서부지역에 위치한 아산만 일대의 농경지에서 2014년 4월 21일부터 5월 30일까지 2~3일 간격으로 총 18회 수행 되었다. 조사 기간 동안 관찰된 도요 물떼새류는 총 15종 7,852개체였다. 대상 종들의 시기별 도래 특성은 본답에 물을 대기 시작하는 4월 중반부터 관찰되었고 5월 초까지 지속적으로 종수와 개체수가 증가하는 경향이 나타났으며 5월 후반으로 가면서 종수와 개체수는 감소하였다. 농경지의 물리적 구조에 따른 서식지 이용 특성은 종별 차이가 나타났으며, 대부분의 종에서 본답과 논둑은 수로나 농로에 비해 선호성이 높게 나타났다. 본답의 미소서식지 선호성은 지역 농업인의 농업 관리에 의해 다양하게 나타났으며, 도요 물떼새류의 종별 서식지의 선호성 차이가 명확히 나타났다. 대부분 종은 무논의 본답 형태에서 관찰되었고, 써레질 후 5 cm 이하로 물을 얕게 댄 형태인 본답의 이용이 가장 높았다. 반면 물을 대지 않은 건답의 형태인 수확 후 추경한 형태는 이용을 하지 않았다. 결론적으로 봄철 논습지는 도요 물떼새류에게 중간 기착지로서 중요한 기능을 하는 것으로 나타났다.

• 한국조경학회지
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• 제32권5호
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• pp.84-101
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• 2004

This study presents an ecological management plan for wildbird habitat conservation, an nature-friendly enhancement of bio-diversity using the riverside of the Tancheon Ecosystem Conservation Area in Seoul by analyzing environmental and ecological characteristics. As a result of analyzing actual vegetation, vegetation type was classified into 34 types. Humulus japonicus association covers an area of 441,568.6㎡(31.44％), and Artemisia princeps var. orientalis association covers an area of 89,690.1㎡(6.39％). Sandy plain as valuable wildbird habitat covers an area of 89,965.9㎡(6.4％). 125 taxa including 34 families, 93 genera, 107 species, and 18 varieties were recorded and the number of naturalized plants were 41 taxa at the survey site. Total naturalized index(NI) and urbanized index(UI) were recorded as 32.8％, and 15.5％. As a result of analyzing the herb plants association structure by surveying 8 belt-transects, the humid native plants was dominant in the partially adjacent revetment edge and damp riverside. On the other hand, naturalized plants was so extensively dominant that it was necessary to establish an ecological management plan. The observed wildbirds belonged to 50 species, 6,118 individuals, and 7 restricted species by law, which were Accipiter gentilis, Falco tinnunculus, Buteo hemilasius, and Buteo buteo. Oriolus chinensis,Hirundo rustica, and Alcedo atthis. The ecological administration plan for Tancheon Ecosystem Conservation Area as follows: in ecological land-use planning, the conservation area(695,518.5㎡) has native woody and herb vegetation and sandy plain with water as an wildbird habitat. The restoration area(653,702.7㎡) has a naturalized plants distribution are with artificial revetment. The nature-friendly Riverside Area(55,414.9㎡) was an easily approached area with damaged riverside vegetation, and a safe area to wildbird habitat. In riverside restoration planning, the artificial riverside should be restored to its natural riverside vegetation, and the artificial embankment should be restored with edge shrubs for wildbird habitat or revegetated for natural riverside landscape. For naturalized plants management planning, we selected naturalized plant species to be weeded out, and suggested an application method for ecological management.

• 생태와환경
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• 제55권1호
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• pp.76-83
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• 2022

기수갈고둥의 잠재적 서식지를 추정하고, 기수갈고둥의 존재 여부에 따라 저서성 거대무척추동물의 군집 구조를 확인하고자 했다. 기수갈고둥의 분포지는 환경부에서 수행 중인 "하구 수생태계 현황 조사 및 건강성 평가" 자료 중 2016년부터 2018년까지의 자료를 이용했다. 점유 모델은 기수갈고둥의 잠재적 서식지를 추정하기 위해 사용되었으며 저서성 거대무척추동물의 군집 구조를 확인하기 위해 4개의 다양성 지수가 사용되었다. 기수갈고둥은 남해안 일대와 동해안 일부 지역에서 발견되었으며, 이러한 양상은 기존 연구와 일치했다. 추가로 점유 모델 적용 결과 기수갈고둥의 잠재적 서식지가 서해안 일부 지역에 나타날 수 있음을 예측했다. 저서성 거대무척추동물의 군집 구조는 기수갈고둥이 채집되지 않은 지역에 비해 기수갈고둥이 채집된 지역에서 상대적으로 높았다. 따라서 제한된 지역에 서식하는 기수갈고둥을 보전할 때 점유 모델을 고려할 수 있으며, 기수갈고둥은 기수환경을 대표할 수 있는 생물로서 지표종으로 활용될 수 있는 것으로 판단된다.

• Fisheries and Aquatic Sciences
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• 제27권3호
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• pp.145-158
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• 2024

Life history characteristics, habitat landscape, and historical events are believed to have shaped the patterns of genetic variation in many taxa. The bony lip barb, Osteohilus vittatus, represent a potamodromous fish that complete all life cycle in freshwater and is widely distributed in Southeast Asia. It usually lives in small rivers and other freshwater habitats, and movement between habitats for either food or reproduction has been typical. These life history characteristics may promote gene flow, leading to less structured populations. However, many freshwater habitats are fragmented, which restricts gene flow. We investigate how this interplay has shaped patterns of genetic variation and phylogeographic structure within this species in the Sundaland, a biodiversity hotspot with a complex geological history, using mitochondrial cytochrome oxidase I (mtCOI) as a genetic marker. Forty-six mtCOI sequences of 506 bp long were collected from ten localities, eight geographically isolated and two connected. The sequences were used for population genetic and phylogeographic analyses. Our results showed a low genetic diversity within populations but high between populations. There was a deep phylogeographic structure among geographically isolated populations but a lack of such structure in the connected habitats. Among geographically isolated populations, sequence divergence was revealed, ranging from 1.8% between Java and Sumatra populations to 12.2% between Malaysia and Vietnam. An indication of structuring was also observed among localities that are geographically closer but without connectivity. We conclude that despite high dispersal capacity, the joint effects of historical events, long-term geographic isolation associated with sea level oscillation during the Pleistocene, and restricted gene flow related to lack of habitat connectivity have shaped the phylogeographic structure within the O. vittatus over the Sundaland.

• 한국산림과학회지
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• 제99권3호
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• pp.267-276
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• 2010

환경부 멸종위기 식물과 산림청 희귀식물로 지정된 왕제비꽃의 5개 지역 천연집단의 식생구조 및 입지환경을 조사한 결과 돌배나무-신나무-산뽕나무 우점군락(강원도 홍천군 내면), 신갈나무-물푸레나무-산뽕나무 우점군락(경기도 연인산), 층층나무-당단풍-산뽕나무 우점군락(경기도 유명산), 고로쇠나무-찰피나무(신갈나무)-고추나무 우점군락(경기도 대부산), 일본잎갈나무-고로쇠나무-물푸레나무 우점군락(충북 월악산)으로 조사되었으며, 자생지의 평균 산도는 pH 5.23, 전기전도도 0.30 ds/m, 유기물함량 12.6%, 전질소함량 0.68%, 유효인산 21.66 ppm 및 양이온치환용량 23.45 cmol(+)/kg로 나타났으며, 치환성양이온의 경우 $Ca^{2+}$ > $Mg^{2+}$ > $K^{2+}$순으로 감소하였다. 왕제비꽃은 둥굴레 및 이질풀과는 정의 상관관계가, 포아풀과는 부의 상관관계가 있는 것으로 나타났다. 목본층에서는 대부산 지역이, 초본층에서는 월악산 지역의 종다양성지수가 각각 0.9656, 1.3295로 가장 높았으며, 최대종다양도는 목본층의 경우 홍천군 내면 지역이 1.3010, 초본층의 경우 대부산 지역이 1.6435로 가장 높았다. 균재도의 경우 목본층은 일본잎갈나무 조림지인 월악산 지역(0.5330)을 제외하면 0.6185~0.8947 범위에, 초본층은 0.6984~0.8356 범위에 있었으며, 우점도는 목본층의 경우 월악산 지역(0.4670)을 제외하면 0.1053~0.3815, 초본층은 0.1644~0.3016의 범위에 있었다.

• Journal of Plant Biology
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• 제17권3호
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• pp.118-126
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• 1974

Mulberry plants cultivated in mid-Korea were studied on the growth habitat, canopy type, productive structure and vertical light intensity in relation to the quality of mulberry leaves for sericulture. The growth in length of new branch of summer cut mulberry in spring was vigorous on the uppermost of old shoot. Numbers of leaves on a branch were barely 4 leaves on lower than 20th branch from base, but those were 13 leaves on higher than 24th branch. Area of leaves completely expanded was broad on high branch, but narrow on low one. The form of canopy, the type of productive structure and the vertical light distribution depend upon varieties of cultivated mulberry plants were classified according to characteristic of each variety in two groups, respectively; globular and columnar form in canopy, broad leaves and narrow leaves types in productive structure, and seriously obstructured the light and fairly transmitted the light into lower leaf stratum invertical light distribution. Out of varieties of mulberry investigated, Suwon No. 4 and Rosang were belong to the former characters, but Illchiroe and Kaeryangsubun were to the latters. The values of leaf dry matter index and dry matter production produced by leaves were increased in direct proportion to the height of leaf stratum; the leaf dry matter index of the uppermost leaf was twice as much that of the lowest, and the dry matter production by the highest leaf was 17 times compared with that by the lowest leaf. It is assumed that the meagre leaves occurred in the lower leaf stratum of Suwon No. 4 and Rosang were caused to diminished the dry matter index and dry matter production in the under leaves of plant, which were affected by receiving the weak light.