• Journal of Wetlands Research
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• v.24 no.2
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• pp.69-82
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• 2022

In this study, we investigated the bacterial community structure in organic rice-fish mixed farming paddy soil by using high-throughput sequencing technology. The results showed that compared with the organic rice cultivated soil, the content of AP (available phosphorus) increased by 310.23 % and the content of OM (organic matter) increased by 168.83%. The most abundant phyla in paddy soils were Proteobacteria, Bacteriodetes, and Chloroflexi, whose relative abundance was above 47.83%. Among the dominant genera, the relative abundance of Limisphaera in paddy soils was observed. Alpha diversity indicated that the bacterial diversity of paddy soils was similar among each other. The bacterial community structure was affected by the relative abundance of bacteria, not the species of bacteria. Principal Coordinated Analysis (PCoA) results showed that the bacterial communities in organic rice-fish mixed farming soil and organic paddy soil were correlated to each other; the bacterial community structure was distinctively grouped by four different systems (paddy soil under organic rice-fish mixed farming system, organic rice cultivation, and conventional rice cultivation), where the first two are closely related to each other than the third one. The results provide basal support for organic agri-cultivation while improving an ecological value at the same time.

• Journal of Wetlands Research
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• v.20 no.4
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• pp.432-445
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• 2018

Vegetation and water characteristics of an eco-technological water purifying biotope were investigated at five years after the wetland construction. A total of 91 vascular plant species in 36 families were recorded. Initially planted emergent macrophytes such as Phragmites australis, P. japonicus, Zizania latifolia, Typha latifolia, and T. angustifolia mainly comprised the vegetational components of the wetland. The effect of water purification was observed markedly in most indicators such as electric conductivity (P < 0.01), $NO_3-N$ (P < 0.05), $NH_4-N$ (P < 0.001), $K^+$ (P < 0.05), $Na^+$ (P < 0.01), and $Mg^{2+}$ (P < 0.01). In particular, $NO_3-N$ and $NH_4-N$ concentrations decreased to about 60% and 30%, respectively, via the purification process of the wetland. Separativeness and curvature from the meandering structure of 15 units (multi-cell wetland system) seemed likely to make the wetland continuously play a role as an eco-technological water purifying biotope. We recommend that eco-technological design factors should be included in wetland constructions for efficient and continuous functioning, thus enhancing ecological values of wetlands.

• Proceedings of KOSOMES biannual meeting
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• 2018.06a
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• pp.187-187
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• 2018

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2010.04a
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• pp.1-14
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• 2010

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.6D
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• pp.1011-1017
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• 2006

It is so sensitive that the wetland ecosystem very weak in artificial interference and environment change. wetlands are a transitional zone between aquatic and terrestrial ecosystems. This natural property is important to people and life. It is necessary to preservation and protection of the wetland with a countermeasure. we really need to Environment-GIS (E-GIS) and digital map which is included correct position, attribute data and range of the wetland. In this study, we take priority of making a database of wetland management. Moreover, we standardize a digital map production of wetland in our research and we improve accuracy of control survey using GPS surveying. The main purpose of this study is to suggest a pre-estimated wetland that have not yet been discovered. by analysing terrain, geological feature, a geographical distribution of plants and animals using GIS.

• Journal of Wetlands Research
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• v.2 no.1
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• pp.41-47
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• 2000

창원시 주남저수지 일대는 세계적인 철새도래지로 주목받고 있으나, 철새로 인한 경제적 피해로 지역민과 환경보전론자 간의 갈등이 심화되고 있다. 따라서 지역민의 이익을 보호하면서도 환경을 보전할 수 있는 대안이 필요하게 되었다. 지역민의 여론을 조사한 결과 지역민들은 철새 피해를 인정하면서도, 철새를 보호해야 한다고 생각하고 있었으며, 환경을 보전하는 관광 개발의 필요성을 제기하였다. 이러한 주민 의견을 반영하여 본 연구에서는 이 지역의 생태관광개발 정책을 수립하였다.

• Journal of Wetlands Research
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• v.10 no.1
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• pp.39-47
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• 2008

An eco-washland is increasingly getting attentions as a new alternative plan for management of water resources because of role as flooding control and ecological park without social and ecological side effects. However, there is a lack of study regarding technological development and ecological guidelines to create eco-washland. This study was carried out to suggest ecological guidelines necessary for engineering process to create eco-washland. A study site was the lower reach of Seokjang stream connecting to Yimjin river, a candidate of new eco-washland, and Kumsa area in Namhan river was selected as a reference site. The analysis of ecological characteristics focused on vegetation, fishes, and birds. Major vegetation communities, composed of dominant species such as Salix koreensis, Salix gracylistyla, Miscanthus sacchariflorus, Phragmites communis, etc., formed physical conditions along with other land uses including open water, sandbar, cultivated land, etc. Dominant species of fishes were some species belonging to Cyprinidae and Acheilognathinae, and in case of birds Anser albifrons, Anas platyrhychos, Anas poecilorhyncha belonging to waterbirds and Paradoxornis webbinanus dependent to forest edge were dominantly distributed. The results showed that complex wetland types associated with partially deep water and upland was the optimal eco-hydrological condition of washland. Cyprinidae and Acheilognathinae in case of fish and Egretta spp. (spring season) and Anas spp. (winter season) in case of bird were selected as target species for the these wetland types. Finally, a detail planning criteria to create habitats of these target species were discussed in terms of spawning, breeding, feeding, resting, refuge, nesting, etc.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.91-91
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• 2017

전 세계적으로 인공습지는 도시화, 기후변화 및 생활수준 향상으로 인한 홍수와 가뭄, 하천생태계 변화, 수질오염과 같은 환경문제의 해결방안으로 제시되고 있다. 이에 따라 국내에서도 여러 목적과 형태의 인공습지가 조성되고 있다. 인공습지의 경우 특정 기능을 목적으로 하여 조성하더라도 인공적 생태계가 조성되므로 복합적 기능을 갖게 된다. 하지만 현재까지의 인공습지 조성 효과에 관한 연구는 한가지 기능에만 초점을 맞추어서 실제 인공습지 조성의 가치가 저평가되고 있다. 본 연구에서는 하천변 인공습지 조성에 따른 여러 효과 중 가장 주가 되는 홍수저감 및 수질개선 기능에 대한 효과를 분석하고 이에 따른 편익을 산정하였다. 먼저 인공습지의 적용 대상 유역을 선정하고 유역 내에 입지를 결정하여 이에 맞는 인공습지를 설계 및 적용하였다. 인공습지 조성에 따른 홍수저감 효과 및 수질개선효과를 각각 분석하였다. 분석 결과에 대해 MD-FDA를 통해 홍수피해액을 산정하였고 대체비용법을 통하여 동일한 수질개선 효과를 갖는 하수처리시설의 하수처리비 및 운영관리비에 해당하는 수질개선 편익을 산정하였다. 본 연구를 통해 인공습지의 홍수저감 효과뿐만 아니라 수질개선 효과를 확인하였으며 정량적인 분석방법을 통해 두 가지 기능에 대한 효과를 분석하여 보았다. 또한 산정된 홍수저감 및 수질개선 효과를 경제적 가치로 환산하여 보다 객관적인 지표로 나타내었다. 본 인공습지 조성에 따른 종합적 편익 산정 연구 결과는 다목적의 인공습지를 적재적소에 적용하는데 기여할 것이다. 추후 생태적 기능, 레크레이션 기능 등에 따른 기타 편익 산정 방법론 조사를 통해 각 기능의 편익을 추가한다면 인공습지 조성에 따른 편익을 종합적으로 고려할 수 있을 것으로 판단된다. 또한 인공습지 조성의 소요사업비 및 유지관리비를 산정하여 인공습지 조성에 대한 경제성분석을 한다면, 실제 인공습지 조성 사업 시 사업의 타당성을 평가하는 기초자료로 활용할 수 있을 것으로 기대된다.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.04a
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• pp.122-125
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• 2005

• Journal of Wetlands Research
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• v.23 no.3
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• pp.201-212
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• 2021

In wetland protection areas, a phytosociological research was conducted on willow forests, which plays an important ecological and environmental role and is the main material for ecological restoration. A total of 61 relevés were collected according to the Z-M(Zürich-Montpellier) school's method and the characteristics of plant communities and the composition of the species were identified. A total of 9 plant communities including 237 taxa were differentiated. Willow species showing the high r-NCD(relative net contribution degree) value in study areas were Salix koriyanagi, Salix chaenomeloides, Salix triandra subsp. nipponica, Salix gracilistyla and Salix pierotii. Poaceae was the most diverse in species, followed by Asteraceae, Apiaceae, Polygonaceae and Fabaceae. Life form type of willow forests in wetland protection areas was determined to be Th(therophytes)-R₅(non-clonal form)-D₄(clitochores)-e(erect form) type. The naturalized plants and invasive alien species were identified as 24 taxa and 4 taxa, respectively. Naturalized and disturbance indices were 10.1% and 41.4%, respectively. The results of the site-species ordination by Non-Metric Multidimensional Scaling(NMDS), wetland types and altitude gradient were the main ecological factors determining the spatial distribution of plant communities. Diversity index and evenness index were high in mountainous palustrine wetlands with relatively high altitude, and the disturbance index, naturalized index and appearance rate of annual plant were high in riverine and lacustrine wetlands with low altitude.