• 한국환경복원기술학회지
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• 제15권3호
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• pp.55-66
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• 2012

This study was carried out to investigate vegetation of Rhododendron mucronulatum habitat in Mt. Biseul to recommend basic information for synecological characteristics and management methods. The survey was carried out from May to July, 2011 and totally 46 vegetation data including 42 families 93 genera 108 species 16 varieties and 5 forma were collected and analyzed. Among the investigated 129 taxa, the numbers of rare plant resources were summarized as 19 taxa; The rare plants designated by Korea Forest Service, the specific plants by floristic region and the endemic plants were listed as 3 taxa, 15 taxa and 4 taxa, respectively. Rhododendron mucronulatum habitat of Mt. Biseul was classified into 3 plant communities (Carex lanceolata-Rhododendron mucronulatum community, Potentilla dickinsii-Selaginella rossii community, Carex lanceolata-Quercus mongolica community). Carex lanceolata-Rhododendron mucronulatum community was subdivided into Tripterygium regelii subunit and Miscanthus sinensis for. purpurascens subunit by human interference degree. And synecology, syndynamics, synchorology of these plant communities were identified, and Site-species ordination analysis by Principal Coordinate Analysis (PCoA) reflected that human impact, soil moisture condition were main ecological factors determining the distribution pattern of classified plant communities. Therefore these plant communities correspond to quite distinctive 4 habitat types : unstable-dry type=Miscanthus sinensis for. purpurascens subunit, unstable-moderate type=Tripterygium regelii subunit, stable-dry type=Potentilla dickinsii-Selaginella rossii community, stable-moderate type=Carex lanceolata-Quercus mongolica community. Finally, through the vegetational diagnosis, proper management methods such as a limit on the access of visitors, planting of native woody plants after removing unwanted vines or grass were suggested.

• 환경생물
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• 제20권1호
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• pp.25-34
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• 2002

경기만 염습지의 식물상을 1999년 8월부터 2001년 10월까지 조사하였다. 본 조사는 경기만에 위치한 14개 내륙연안과 도서지역의 38개 지역에서 자연염습지, 사구, 폐염전 및 해안제방을 구분하여 수행되었다. 이 지역에서 조사된 염생식물은 17과 32속 46종이었는데, 이중 자연염습지에만 자라는 식물은 지채 (Triglochin mariti-mum L.), 천일사초 (Carex scabrifolia Steud.), 퉁퉁마디(Salicornia herbacea L.), 방석나물 (Suaeda australis (R. Br.) Moq.), 해홍나물 (S. martima Dum.), 칠면초 (S. japonica Makino), 기수초(S. malacosperma Hara) 등 7종이었으며, 사구에만 자라는 식물은 갯방풍(Glehnia littoralis Fr. Schm.), 갯사상자 (Cnidium japonicum Miq.), 모래지치 (Messerschmidia sibirica L.), 갯씀바귀(Ixeris repens A. Gray), 호모초(Corispermum stauntonii Miq.), 순비기나무 (Vitex rotundifolia L. fil.), 갯쇠보리(Ischaemum anthephoroides Miq.), 통보리사초 (Carex kobomugi Ohwi) 등 8종이었다. 각 조사지 역별 염생식물은 교동도 21종, 석모도 17종, 강화도 남쪽해안과 동검도 28종, 장봉도 16종, 신,시도 16종, 대무의도 23종, 덕적도 23종, 이작도 10종, 영흥도 29종, 소래 25종, 대부도 15종, 쌍송리 6종, 호곡리 16종, 매향리 10종 등으로 조사되었다.

• Safety and Health at Work
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• 제9권2호
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• pp.133-139
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• 2018

Background: Selecting priority occupational carcinogens is important for cancer prevention efforts; however, standardized selection methods are not available. The objective of this paper was to describe the methods used by CAREX Canada in 2015 to establish priorities for preventing occupational cancer, with a focus on exposure estimation and descriptive profiles. Methods: Four criteria were used in an expert assessment process to guide carcinogen prioritization: (1) the likelihood of presence and/or use in Canadian workplaces; (2) toxicity of the substance (strength of evidence for carcinogenicity and other health effects); (3) feasibility of producing a carcinogen profile and/or an occupational estimate; and (4) special interest from the public/scientific community. Carcinogens were ranked as high, medium or low priority based on specific conditions regarding these criteria, and stakeholder input was incorporated. Priorities were set separately for the creation of new carcinogen profiles and for new occupational exposure estimates. Results: Overall, 246 agents were reviewed for inclusion in the occupational priorities list. For carcinogen profile generation, 103 were prioritized (11 high, 33 medium, and 59 low priority), and 36 carcinogens were deemed priorities for occupational exposure estimation (13 high, 17 medium, and 6 low priority). Conclusion: Prioritizing and ranking occupational carcinogens is required for a variety of purposes, including research, resource allocation at different jurisdictional levels, calculations of occupational cancer burden, and planning of CAREX-type projects in different countries. This paper outlines how this process was achieved in Canada; this may provide a model for other countries and jurisdictions as a part of occupational cancer prevention efforts.

• 생명과학회지
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• 제25권4호
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• pp.369-375
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• 2015

식물 보존의 권고지역에서 식물 집단의 공간적 데이터는 여러 목적에서 중요하다. 부산광역시 금정산과 아홉산 의 대사초(Carex siderosticta)의 지리적 거리에 따른 공간적 분포를 분석하였다. 공간적 양상의 분석 방법은 여러 패치 척도, 분산 척도에 의거한 plot(플롯)의 크기에 따라 집단의 균질성 또는 운집을 분석하였다. 대사초의 많은 자연 플롯은 산림군락에서 균질하지 않았다. 예를 들면 균질한 플롯은 6.0 m $\times$ 6.0 m 이내였다. 플롯의 크기가 6.0 m $\times$ 12.0 m 이상이면 운집되었다. 대사초의 이웃 패치는 평균 7.5 m에서 9.0 m사이였다. 그런데 자연집단이 인간의 활동에 의해 교란되면 운집은 9.0 m보다 짧은 거리에서 일어났다. 결론적으로 대사초의 지리적 분포는 플롯의 밀도에 균질하지 않았고 금정산과 아홉산 집단에서 집단 크기에 따라 다르며 인간의 간섭은 플롯에서 밀도 효과를 일으킨다.

• 농업생명과학연구
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• 제44권6호
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• pp.61-67
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• 2010

중부지방에서 동절기에 월동가능한 상록지피식물의 이용가능성을 알아보고자 Ajuga reptans와 Carex morrowii 'Variegata', Dianthus 'Night Star', Hedera helix 'Ivalace', Pachysandra terminalis, Sedum rupestre 등 총 6종의 실험재료를 대상으로 0, 30, 70%의 차광처리에 따른 내한성 증진실험을 실시한 결과, 모든 처리구에서 40% 이하의 생존율을 나타낸 Dianthus 'Night Star'를 제외하고는 차광처리에 관계없이 Ajuga reptans와 Carex morrowii 'Variegata', Sedum rupestre은 50% 이상의 생존율과 상록의 잎을 유지했다. 그러나 Hedera helix 'Ivalace'와 Pachysandra terminalis는 0% 조건에서 전부 고사하였으나 70% 광조건에서는 40% 이상의 생존율을 나타냈다. 따라서 일부 내한성이 떨어지는 상록지피종들도 광조건의 조절에 따라서 상록의 잎을 유지하면서 월동 가능할 것으로 사료된다.

• 화훼연구
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• 제16권4호
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• pp.284-290
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• 2008

자생 잎무늬종 식물인 문수조릿대와 무늬털대사초에 있어서 광도차에 따른 생육과 생리적 변화 그리고 엽색의 변화를 알아보고 이들의 관상가치 증진에 알맞은 광도를 구명하고자 40%, 70%, 85% 차광구조건과 0%인 노지조건에서 4개월동안 실시한 실험결괴는 다음과 같다. 무늬종 문수조릿대(Arundinaria munsuensis)는 광도가 낮아질수록 초장과 잎의 크기가 증가되었고 차광 85% 조건에서 광합성효율이 높은 것으로 미루어 보아, 음지조건에서도 생육이 잘됨을 알 수 있었다. 그러나 40% 차광구($1500{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$)에서 가장 아름다운 엽색이 발현되었으며 생육이 양호하여 관상가치가 높았다. 무늬털대사초(Carex ciliato-marginata for. variegata)는 40% 차광조건에서 생육이 가장 좋았으며 차광수준이 높아질수록 생리활성변화는 높았다. 그러나 무차광 상태와 85% 차광조건에서는 관상가치가 저하되었고, 노랑색의 잎무늬를 가진 무늬털대사초는 40% 차광에서 녹색과 연노랑(RHS 146B, strong greenish yellow)색의 무늬 발현이 가장 좋았다.

• Safety and Health at Work
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• 제13권3호
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• pp.308-314
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• 2022

Background: Occupational cancer is a global health issue. The Korean CARcinogen EXposure (K-CAREX), a database of CARcinogen EXposure, was developed for the Korean labor force to estimate the number of workers exposed to carcinogens by industry. The present study aimed to estimate the intensity of exposure to carcinogens by industry, in order to supply complementary information about CARcinogen EXposure intensity to the K-CAREX. Methods: We used nationwide workplace monitoring data from 2014 to 2016 and selected target carcinogens based on the K-CAREX list. We computed the 95th percentile levels of measurements for each industry by carcinogens. Based on the 95th percentile level relative to the occupational exposure limit, we classified the CARcinogen EXposure intensity into five exposure ratings (1-5) for each industry. Results: The exposure ratings were estimated for 21 carcinogenic agents in each of the 228 minor industry groups. For example, 3,058 samples were measured for benzene in the manufacturing industry of basic chemicals. This industry was assigned a benzene exposure rating of 3. Conclusions: We evaluated the CARcinogen EXposure ratings across industries in Korean workers. The results will provide information on the exposure intensity to carcinogens for integration into the K-CAREX. Furthermore, it will aid in prioritizing control efforts and identifying industries of concern.

• Asian-Australasian Journal of Animal Sciences
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• 제23권1호
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• pp.61-67
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• 2010

The chemical components in plant cuticular wax can be used as markers to estimate the species composition of the diet of grazing animals. In this experiment, composition of the diet of yak on the Qinghai-Tibetan plateau was estimated using n-alkane analysis. During the grazing period, samples of whole plants of the species present, plus fecal samples voided by the yak, were collected, air-dried and ground prior to the extraction of cuticular wax n-alkanes. The species composition of the yak diets was estimated by relating fecal alkane contents to those of the plant species, using the 'ATWHAT'software package. The results showed that the n-alkane technique can detect the main dietary components selected by yak. The diet consumed by yak contained 33% Kobresia humilis, 67% Stipa aliena in summer pasture; 26% Potentilla anserine, 74% Carex qinghaiensis in autumn pasture; 52% Carex qinghaiensis, 32% Heteropappus bowerii and 16% Saussurea semifasciata in winter pasture and 5% Carex qinghaiensis, 95% Achnatherum splendens in spring pasture. The apparent selection for forbs is likely to be a reason for nutritional constraint of yak inhabiting alpine environments.

• 한국약용작물학회지
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• 제15권5호
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• pp.357-361
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• 2007

This study was conducted to evaluate the vegetation structure of the Peucedanum japonicum community by the phytosociological method of floristic composition table and cluster analysis on the southern coast of Korea. The vegetation of the Peucedanum japonicum community was classified mainly into 2 communities such as the Miscanthus sinensis community and the Lysimachia mauritiana-Rosa wichuraiana community. The Carex boottiana and Sedum oryzifolium community were classified as the lower rank of Miscanthus sinensis community. On level 1 of the cluster analysis of plant species, they were classified into Lysimachia mauritiana and Rosa wichuraiana group, also Miscanthus sinensis, Carex boottiana and Sedum oryzifolium in Peucedanum japonicum community, which is similar to the community classification shown in the synoptic table. On level 1 of the cluster analysis of relev, inland coast with Jejudo was Lysimachia mauritiana and Rosa wichuraiana of group such as level 1 of the cluster analysis of plant species, and island coast with Geomundo was Miscanthus sinensis Carex boottiana and Sedum oryzifolium of group such as cluster analysis of plant species.

• The Korean Journal of Ecology
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• 제6권3호
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• pp.177-186
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• 1983

Vegetation types and their standing crop in the sand dune on the south coast of Korea was investigated by the method of Curtis, J.T. and McIntosh, R.P. (1951). The relationship between vegetation types and environmental factors was also analyzed. The dominant species in the vegetations of the south coast sand dune were Carex pumila, Calystegia soldamella, Imperata cylindrica var. koenigii, Vitex rotundifolia, Ixeris repens, Carex kobomugi, Zoysia macrostachya. The species density in the sand dune vegetation increased with the distance from the coast, psammophyte and rhizome psammophyte decreased with the distance from the coast but other plants increased. The standing crop of the sand dune vegetatiion was average $53.79g/m^2$. An individual standing crop of Vitex routundifolia and Carex kobomugi varied with the curve of secondary degree. The salt content of the sand dune soil from 2.95 to 11.78 mg %, and it was not significant differences among stands, but it was varied with the distance form the coast. Negative relationship between warmth index and aboveground standing crop was found and the formula y=283.8886 - 2.4910X could be estimated.