• 한국환경생태학회지
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• 제11권3호
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• pp.290-309
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• 1997

경기도 수리산 군포시험림의 식물군집구조를 파악하기 위하여 64개의 조사구를 설정하고 식생조사를 실시하였다. 전체 64개 조사구는 DCA ordination분석에 의하여 리기테다소나무군집(군집 I), 소나무군집(군집 II), 소나무-신갈나무군집(군집 III), 굴참나무군집(군집 IV), 갈참나무군집(군집 V), 졸참나무군집(군집 VI), 서어나무군집(군집 VII)으로 분리되었다. 식물군집구조분석결과 천이예측은 명확하지 않았으나 군집 I, 군집 III은 참나무류군집으로 천이가 예측되었고 군집II, 군집IV, 군집V, 군집VI은 현 군집을 유지할 것으로 추정되어 기후극상으로의 변화는 예측할 수 없었으며, 군집 VII은 기후극상으로서 계속 안정된 상태를 유지할 것이다. Shannon의 종다양도는 0.7430~1.3025이었고 토양산도는 전지역이 pH 4.16~5.13이었다.

• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2003년도 International Meeting of the Microbiological Society of Korea
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• pp.111-114
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• 2003

The dynamics of microbial community structure of the various domestic wastewater treatment processes were examined using a novel approach of quinone profiles. The compositions of microbial quinone of 5 sites fer plant and lab-scale activated sludge were analyzed. More than 14 kinds of quinones were observed in the activated sludges tested in this study. The microbial community structure of the plant activated sludge processes a little differed from that of the lab-scale submerged MBR systems. The dominant quinones were UQ-8, UQ-10 followed $MK-8(H_4)$, MK-7 and MK-6. The molar ratio of ubiquinones to menaquinones (UQ/MK) changed from 0.81 to 1.9, indicating that aerobic bacteria dominated the microbial community of the activated sludge examined. The microbial diversity of the activated sludges calculated from the all quinone compositions was 9.5-11.9 and the microbial equability of the activated sludges was 0.64-0.79.

• 한국환경생태학회지
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• 제8권2호
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• pp.121-134
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• 1995

주왕산국립공원 소나무림의 식물군집구조분석을 위하여 25개소에 조사구(1개 조사구당 l00$m^2$)를 설치하고 식생조사를 실시하여 TWINSPAN에 의한 classification과 DCA에 의한 ordination기법을 이용하여 분석하였다. 전체 조사구는 TWINSPAN에 의하여 소나무-굴참나무군집, 소나무-졸참나무군집, 소나무-쇠물푸레군집, 소나무-쇠물푸레-참나무류군집, 소나무-활엽수혼효림군집 등 5개의 군집으로 분리되었다. 본 조사지의 천이계열은 교목상층에서는 소나무$\longrightarrow$졸참나무, 신갈나무$\longrightarrow$서어나무, 교목하층 및 관목층에서는 조록싸리, 참싸리, 진달래$\longrightarrow$쪽동백나무, 국수나무, 산초$\longrightarrow$당단풍, 생강나무로 추정되었다. 환경인자인 토양함수량과 토양산도는 군집간 차이가 없었다.

• 한국환경과학회지
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• 제19권8호
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• pp.1047-1055
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• 2010

This research conducted a vegetation survey on Mt. Changbai which are habitats of Papaver radicatum var. pseudoradicatum to obtain a basic data for artificial cultivation. The habitas of P. radicatum var. pseudoradicatum consisted of two communities as Dryas octopetala var. asiatica community and Aconogonon ajanense community. The community units as D. octopetala var. asiatica community and A. ajanense community belong to alpine vegetation in Mt. Changbai. A. ajanense community is distributed around altitude of 2007-2061m, and D. octopetala var. asiatica community is distributed altitude of 2350-2570m at relatively high elevation. According to the correlation between the vegetation structure and elevation. This vegetation structure can be simplified at the herb layer. The vegetation is classified into D. octopetala var. asiatica community and A. ajanense community on the axis 1 basis in the BC ordination analysis. Further, there appeared higher plant life totalling to 40 taxa comprising 35 species, 4 varieties and 1 forma with 20 families and 34 genuses at the whole survey area. Among these, Cyperaceae and Ericaceae plants excellent in resistance to environment was surveyed the most, accounting for 16%.

• 한국환경생태학회지
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• 제9권2호
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• pp.133-146
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• 1996

오대산 국립공원 동대산지역의 해발고와 사면에 따른 식물군집구조를 분석하기 위하여 63개의 조사구(조사구면적 100m$^{2}$)를 설치하고 TWINSPAN과 DCA기법을 이용하여 식생조사를 실시하였다. 조사구들은 사면보다는 해발고에 의한 군집분리가 명확하였는데 해발고가 높을수록 신갈나무, 피나무가 우점종을 이루었고 해발고가 낮을수록 들메나무, 박달나무, 서어나무, 층층나무의 우점치가 증가하였다. 본 연구결과 분리된 군집은 6개군집으로써 동, 서사면 고지대의 피나무군집, 신갈나무군집, 중지대의 신갈나무-피나무군집, 동사면 저지대의 신갈나무0들메나무군집, 소나무-서어나무-박달나무군집과 서사면 저지대의 들메나무-층층나무군집이었다. 또한 지난 20여년간 동대산지역은 정상부분을 제외하고 동, 서사면에서 식생변화가 일어난 것으로 나타났다.

• 한국조경학회지
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• 제28권6호
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• pp.1-15
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• 2001

The purpose of this study is to figure out the structural characteristics of urban plant community and suggest restoration model of Quercus mongolica in the case of Korean national Capital Region. The investigation areas were selected from urban area of Mt. Nam at Chung-Gu, suburban areas of Mt. Bong at Eunpyoung-GU, Mt. Sungju at Buchon City and non-urban areas of Mt. Suri at Kunpu City and Mt. Chonma t namyangju-City. After the main study field had been classified into the evaluation of the ecological characteristics and the modeling of the vegetation. We analyzed to evaluate the ecological characteristics of the forest structure -- successional stage, naturalness, multi-layer structure of the forest and species diversity, and the plant community structures. We have proposed vegetation restoration model based on the selection of proper plants, the number of individuals, diameter short area of breast height, the shortest distance between plants in non-urban area. As for successional stage, It was judged that the ecological succession may not be followed like the present stage of the surveyed areas in urban, suburban and non-ruban areas. As for the retention of naturalness and multi-layer structures of vegetation, In Quercus mongolica community, Robinia pseudo-acacia and Ailanthus altissima occurred in each layers at Mt. Nam, Mt. Bong and Mt. Sungju, and Eupatorium rugosum occurred in herbaceous layer at Mt. Nam. Consequently, the ecological restoration plan following the structure of the vegetation in Mt. Chonma seemed to be advisable in Q. mongolica community, there were less number of species and individuals in urban areas than those of non-urban areas. Planting of trees following the simulated native plant community of non-urban areas seemed to be required to promote the plants in urban areas. Considering the number of individuals up to three layers in each 400$m^2$ area, it was composed of twenty nine in canopy layer, forth nine in understory layer, 367 in shrub layer and 33.7% herbaceous ground cover in the Q.mongolica community. The suggested restoration model in this study is nan applicable model for the introduction in the cities, and this study shows that continuous experiments and field investigation on this model should be performed in the future.

• 한국조경학회지
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• 제21권2호
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• pp.107-119
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• 1993

This study was conducted to increase to increase the plant species diversity, which was based on the analysis of plant community structure and the survey of human's disturbance degree in Mt. Yongma and Mt. Acha urban nature park, Seoul. The plant community were divided into four groups by TWINSPAN and DCA. These groups were Pinus rigida-P. densiflora community, Quercus mongolica-Q.aliena-Q.accutissima community, Robinia pseudoacaia-Q.accutissima-Poplus${\times}$albaglandulosa community and R.pseudoacacia community. The successional trends of tree species seems to be from P.densiflora, P.rigida, Sorbus alniflora to Q.mongolica, Q.aliena and from P.${\times}$albaglandulosa, R.pseudoacacia, through Q.accutissima, to Q. mongolica, Q.aliena. The species diversity of plant community was high in natual plant community but was low in artificial planting community respectively. Number of species, number of species individuals, indices of species diversity was lowered and soil hardness was increased by the user's trampling, undercutting work and planting P.koraiensis after thinning. In the basis of study results, we proposed the management plan for the urban forest.

• Journal of Plant Biology
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• 제14권1호
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• pp.15-23
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• 1971

The productivity of summer phytoplankton communities in Lake Hwajinpo, Lake Yongrang and Lake Changja were studied by measuring vertical variation of chlorophyll a amounts. The author also classified the lake types on the basis of the amount of chlorophyll in the lake water. And in Lake Changja, the seasonal changes of stratification of chlorophyll were studies. In Lake Hwajinpo, the productive structure of the phytoplankton community in summer was found to be L-shaped and of the mesotrophic type. In Lake Yongrang, the productive structure of the phytoplankton community in summer was alo L-shaped and of the mesotrophic type. And maximum chlorophyll layer was near the lake bottom below the compensation depth. In Lake Changja, the structure of phytoplankton community in summer was reversed L-shaped and of the eutrophic type, with the maximum chlorophyll layer just below the surface. The vertical distribution of chlorophyll amounts as a measure of the productive structure almost always formed a stratum distribution except in September and sometimes in May, in Lake Changja. In September homogeneous distribution was observed.

• Ocean and Polar Research
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• 제38권4호
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• pp.315-324
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• 2016

In this study, we investigated changes in the macrobenthic community in Sihwa tidal flat before and after the operation of a Tidal Power Plant (TPP). In order to investigate changes in the macrobenthic community structure, field surveys were conducted at eighteen stations in 4 transect lines every September from 2011 to 2015. Mean density of macrobenthos decreased to $116ind./m^2$ in 2015 from $1,602ind./m^2$ in 2011. While the mean density of macrobenthos has decreased, species richness and biomass have gradually increased. The species diversity and SEP (Shannon-wiener Evenness Proportion) have also gradually increased over time since the operation of the TPP. The macrobenthic community in Sihwa tidal flat was divided into 4 groups on a yearly base. Before the operation of TPP, opportunistic species such as Neanthes succina and Polydora cornuta largely contributed to the structure of the macrobenthic community, while equilibrium species such as Periserrula leucophryna and Scopimera globosa contributed after the operation. With the operation of TPP, the macrobenthic community has rapidly recovered and this might be related to improvement in the quality of water and sedimentary environments as a result of an increase in water mass volume exchanged through the TPP gate.

• Animal cells and systems
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• 제14권3호
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• pp.225-236
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• 2010

We compared the composition of phospholipid fatty acids (PLFA) to assess the microbial community structure in the soil and rhizosphere community of non-transgenic watermelons and transgenic watermelons in Miryang farmlands in Korea during the spring and summer of 2005. The PLFA data were seasonally examined for the number of PLFA to determine whether there is any difference in the microbial community in soils from two types of watermelons, non-transgenic and transgenic. We identified 78 PLFAs from the rhizosphere samples of the two types of watermelons. We found eight different PLFAs for the type of plants and sixteen PLFAs for the interaction of plant type and season. The PLFA data were analyzed by analysis of variance separated by plant type (P<0.0085), season (P<0.0154), and the plant type${\times}$season interaction (P<0.1595). Non-parametric multidimensional scaling (NMS showed a small apparent difference but multi-response permutation procedures (MRPP) confirmed that there was no difference in microbial community structure for soils of both plant types. Conclusively, there was no significant adverse effect of transgenic watermelon on bacterial and fungal relative abundance as measured by PLFA. We could reject our hypothesis that there might be an adverse effect from transgenic watermelon with our statistical results. Therefore, we can suggest the use of this PLFA methodology to examine the adverse effects of transgenic plants on the soil microbial community.