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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Wetlands Research
Journal Basic Information
Journal DOI :
Korean Wetlands Society
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Volume & Issues
Volume 16, Issue 4 - Nov 2014
Volume 16, Issue 3 - Aug 2014
Volume 16, Issue 2 - May 2014
Volume 16, Issue 1 - Feb 2014
Selecting the target year
Analysis on effects of Community Business' Success Factor and Support Factor on Goals in 5 West Sea Islands
Shin, Sunmi ; Byun, Byungseol ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 293~302
DOI : 10.17663/JWR.2014.16.3.293
This study analyzed the influence relationship of community businesses' success factors and support factors on goals in 5 West Sea islands. As research methods, it conducted a survey with experts in academia and public institutions concerning them, and analyzed the effects of the success factors and support factors on their goals. As the methods of the analysis, a factorial analysis was carried out to assess the validity and the characteristics of the community businesses' success factors and support factors, and a one-way ANOVA was carried out to verify whether the difference in the mean of the experts' career is statistically significant. Lastly, a multiple regression analysis was conducted to analyze the effects of the success factors and support factors on the community businesses' goals.
The Distribution Characteristics of Fish Community by Habitat Type in the Nonsan Stream
Lee, Hwang-Goo ; Choi, Jun-Kil ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 303~313
DOI : 10.17663/JWR.2014.16.3.303
The spatial distribution characteristic of fish community were investigated at the 10 habitat types in the Nonsan stream from August, 2008 to June, 2009. The collected species during the surveyed period were 26 species belong to 6 families. Korean endemic species were Sarcocheilichthys nigripinnis morii, Squalidus japonicus coreanus, Hemiculter eigenmanni, Pseudobagrus koreanus, and Odontobutis interrupta which showed 19.2% ratio of total species. Dominant species was Zacco platypus, and subdominant species was Tridentiger brevispinis. Dominant species according to habitat types were Micropterus salmoides(substrate type pool and rock type pool), Lepomis macrochirus(channel connected pool and channel unconnected pool/abandoned type pool), T. brevispinis(channel unconnected pool/overflow type and run) and Z. platypus(riffle, meander type pool, side channel, and dam type pool). As a results of community analysis in side channel, diversity index showed relatively high values, indicating that habitat types in the Nonsan stream have relatively stable community structure. Bray-curtis cluster analysis indicated that the meander type pool and riffle showed the most similar values(80.8%). Moreover, cluster and principal component analysis were classified as 2 groups(lotic and lentic habitats).
Valuation of Ecosystem Services through Organic Carbon Distribution and Cycling in the Quercus mongolica Forest at Mt. Worak National Park
Won, Ho-Yeon ; Shin, Chang-Hwan ; Mun, Hyeong-Tae ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 315~325
DOI : 10.17663/JWR.2014.16.3.315
Valuation of ecosystem services through organic carbon distribution and cycling in the Quercus mongolica forest at Mt. Worak national park were investigated from May 2012 through April 2013. The amount of carbon allocated to above and below ground biomass was 81.94 and 20.53 ton C/ha. Amount of organic carbon in litter layer was 6.49 ton C/ha. Amount of organic carbon within 50 soil depth was 141.23 ton C
. Total amount of organic carbon in this Quercus mongolica forest was estimated to 250.19 ton C
. The estimated amount of won in this Quercus mongolica forest in terms of total organic carbon was about 5.27 million won
. The amount of carbon evolved through soil respiration was 7.31 ton C
. The amount of carbon evolved through microbial respiration and root respiration was 3.58 and 3.73 ton C
, respectively. The amount of organic carbon absorbed from the atmosphere of this Quercus mongolica forest was 1.61 ton C
when estimated from the difference between net primary production and microbial respiration. This amount will come to about 33,000 won
in Korean currency.
Modeling Three-dimensional Free Surface Flow around Thin Wall Incorporation Hydrodynamic Pressure on δ-coordinate
Kim, Hyo-Seob ; Yoo, Ho-Jun ; Jin, Jae-Yul ; Jang, Chang-Hwan ; Lee, Jung-Su ; Baek, Seung-Won ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 327~336
DOI : 10.17663/JWR.2014.16.3.327
Submerged thin walls are extreme case of submerged rectangular blocks, and could be used for many purposes in rivers or coastal zones, e.g. to tsunami. To understand flow characteristics including flow and pressure fields around a specific submerged thin wall a numerical model was applied which includes computation of hydrodynamic pressure on
-coordinate has strong merits for simulation of subcritical flow over mild-sloped beds. On the other hand
-coordinate is quite poor to treat sharp structures on the bed. There have been a few trials to incorporate dynamic pressure in
-coordinate by some researchers. One of the previous approaches includes process of sloving the Poisson equation. However, the above method includes many high-order terms, and requires long cpu for simulation. Another method SOLA was developed by Hirt et al. for computation of dynamic pressure, but it was valid for straight grid system only. Previous SOLA was modified for
-coordinate for the present purpose and was adopted in a model system, CST3D. Computed flow field shows reasonable behaviour including vorticity is much stronger than the upstream and downstream of the structure. The model was verified to laboratory experiments at a 2DV flume. Time-average flow vectors were measured by using one-dimensional electro-magnetic velocimeter. Computed flow field agrees well with the measured flow field within 10 % error from the speed point of view at 5 profiles. It is thought that the modified SOLA scheme is useful for
Terrestrial Insect Diversity of the Donggang River in Korea
Park, Jinyoung ; Park, Seong Joon ; Cha, Jin Yeol ; Park, Jong Kyun ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 337~346
DOI : 10.17663/JWR.2014.16.3.337
This study was carried out to investigate the terrestrial diurnal insects in the Donggang river neighborhood. A total of 455 species belonging to 117 families of 16 orders were identified from 3,001 collected terrestrial insects around the Donggang river. Species richness showed as follows; Coleoptera (166 species, 34.48%), Hemiptera (11 species, 24.0%), Lepidoptera (68 species, 14.95%), Diptera (40 species, 8.79%), Hymenoptera (28 species, 6.15%), Orthoptera (18 species, 3.96%), Odonata (7 species, 1.54%), and others (3.74%). The Coleoptera consisted of the most number of individuals (33.2%), followed by 951 Hemiptera (31.7%), 662 Lepidoptera (20.7%), 155 Orthoptera (5.2%), 100 Diptera (3.3%), 87 Hymenoptera (2.9%), 30 Odonata (1.0%) and others (2.0%). Among them, 1 endangered species of Ministry of Environment, 1 Critically Endangered Korean species, 7 Vulnerable Korean species (VU), and also 2 Near Threatened Korean species were surveyed in the Donggang river neighborhood.
Solid-Liquid Separation Characteristics with Bio-filter Media Reactor
Park, Young Bae ; Jung, Yong Jun ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 347~353
DOI : 10.17663/JWR.2014.16.3.347
This work was performed to find the effect of operation parameters on the permeate flux through the activated sludge dynamic layer, and to indicate the relationship between the water quality of supernatant and flux based on the results. Since the effluent can be obtained through steady and stable formation of cake layer in the bio-filter media system, it is an important subject to keep and control microbes with activated state in the bio-reactor. Filtration resistance was drastically increased at more than 18000mg/L of MLSS. With filtration time continued, the flux was gradually decreased and the water qualities of supernatant monitored by turbidity and TOC were also deteriorated. This phenomenon indicated that the organic materials generated by microbes and accumulated in the reactor might affect the flux in the system. In addition, the decrease of flux was simultaneously observed in the sludge volume index. When SVI was controlled from 150 to 250, the flux was also decreased. The proper aeration time was recommended to 30 to 60 seconds in this system. In order to operate this system steadily, therefore, the control of water quality of supernatant and SVI should be proceeded.
Soil properties of barrier island habitats in the Nakdong river estuary
Yi, Yong Min ; Yeo, Un Sang ; Sung, Kijune ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 355~362
DOI : 10.17663/JWR.2014.16.3.355
Changes of soil properties due to sedimentation and erosion in the river estuary may lead changes in environmental factors that affect plant growth and distribution, Then habitats in the river estuary that provide various ecological functions can also be influenced. Topsoil samples were analyzed in order to understand the soil properties of important barrier islands and habitat types in the Nakdong river estuary. The samples were obtained from Phragmites communis and Scirpus planiculmis habitats, the tidal flats in the southern area of Eulsukdo, and in Mangeummerydeung, Baekhapdeung, and Doyodeung. Analyses results showed that bulk density, pH, organic matter content and total nitrogen concentration which were directly or indirectly affected by vegetation showed significant difference (p<0.05) with habitat types but no differences in water content and oxidation reduction potential which could be affected by soil texture and showed significant difference among barrier islands. Results suggested that soil properties on barrier islands in the Nakdong river estuary were influenced first by geomorphic changes due to sedimentation and erosion, and then by the presence or type of vegetation. A range of physical and chemical properties were analyzed; soil water content and bulk density (physical properties), and organic content and pH (chemical properties) were correlated with seven other soil properties, at a level of significance higher than 90%. These aspects played an important role in determining overall soil properties in the studied area.
A Study of RCSTP Nutrient Removal Efficiency in Winter Season
Im, Jiyeol ; Gil, Kyungik ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 363~370
DOI : 10.17663/JWR.2014.16.3.363
Sewage distribution rate in rural area is only 50% level than urban area. Normally, rural area sewage is focused on the reason of water source pollution owing to rural areas were located in near water source. The Korea government is effort to manage the rural community sewage for protect the water source. In this study conducted analysis on rural community sewage treatment plant(RCSTP) nutrient treatment efficiency using operation results on winter season. Research areas are newly constructed in Bong-hwa, Yeong-yang and An-dong areas which are located in near An-dong Im-ha Dam. Based on operation result, sludge retention time(SRT) and mixed liquer suspended solid(MLSS) were effected on RCSTP nutrient treatment efficiency. Thus, it is necessary to manage of operation condition for nutrient treatment efficiency in RCSTP during the winter season.
Effect of Retention Time on the Removal Efficiency in Grassed Swale
Paek, Seoungbong ; Gil, Kyungik ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 371~381
DOI : 10.17663/JWR.2014.16.3.371
Recently the water quality management policy gives priority to management the point source. Non-point pollution source is difficult to comprehend because those don't have certain outflow point and emission. There are many development and research about BMPs for manage the Non-point pollution source. Various methods of removal efficiency are presented for assessment of Best Management Practices (BMPs). In this study, retention time have effect on removal efficiency based on monitoring results of Grassed Swale is studied. Also, Compare a difference according to various methods of Grassed Swale removal efficiency. The result of removal efficiency analysis depending on retention time of Grassed Swale, removal efficiency is higher as retention time increases. To obtain a stable removal efficiency of Grassed Swale, retention time of Grassed Swale should be secure.
Comparison and Evaluation of the Inundation Areas by Levee Breaching using LISFLOOD
Choi, Cheon Kyu ; Choi, Yun Seok ; Kim, Kyung Tak ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 383~392
DOI : 10.17663/JWR.2014.16.3.383
The purpose of this study is to simulate inundation and evaluate the applicability of LISFLOOD model to the streams in South Korea by comparing with the inundation map using FLUMEN. The suggested levee breaching scenarios were applied to the LISFLOOD model, and the results obtained from scenarios were evaluated. The modeling results using LISFLOOD by appling the levee breaching scenarios showed 0.2% ~ 42% relative error with FLUMEN model in inundation area. But the relative error of maximum inundation area by overlapping all the flood analysis results from levee breaching scenarios such as the way making flood risk map was approximately 1.2% between two models. Meanwhile, LISFLOOD model was easy to construct input data, DEM as topographic data and discharge hydrograph as upper boundary conditions. And computing time of LISFLOOD was shorter than FLUMEN. Therefore LISFLOOD model can be applied usefully in the region that needs immediate inundation modeling.
A study for Improvement the Accuracy of Tree Species Classification within Various Sizes of Training Sample Areas by Using the High-resolution Images
Hou, Jin Sung ; Yang, Keum Chul ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 393~401
DOI : 10.17663/JWR.2014.16.3.393
The purpose of this study was to investigate the objective impact in accuracy and reliability with tendency depend on training samples by using the high-resolution images. Supervised classification was performed based on multi-spectral images which made by each satellite and aerial images for considering all of bands' characteristics. The highest accuracy was 84.7% with satellite image(3*3) and 83% with aerial image(5*5) at the accuracy verification phase. Also, the overall accuracy with the consideration of Kappa coefficient were 0.84 for satellite images and 0.82 for aerial images. In all of the images, the smaller training sample was, the higher accuracy showed. Therefore, tree species classification accuracy was tended to rely on training sample size.
Estimation of Production Unit Loads of Livestock Manure Based on TOC
Lee, Yunhee ; Kim, Yongseok ; Park, Jihyung ; Oa, Seong-Wook ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 403~409
DOI : 10.17663/JWR.2014.16.3.403
Assessment of pollutant loads for livestock manure based on total organic carbon (TOC) is being required to apply TOC as an indicator in management of total maximum daily loads. In this study, TOC based unit loads of pig manure known as highly contributing to water pollution assessed. The concentration of pig manure, amount of manure production including cleaning water, and unit loads were investigated targeting 52 farms according to 4 major river basins, rearing form, farm scale, and piggery form. The manure production was highly generated in scraper type of piggery, in small scaled farm rearing sow, and in Han River basin and Nakdong River basin. The averaged manure production was 7.4 L/head/d in total river basins. Averaged concentrations were investigated as TOC 16,037 mg/L, BOD 10,559 mg/L, TN 4,145 mg/L, and TP 503 mg/L. Corresponding unit loads were assessed as TOC 117.1 g/head/d, BOD 77.1 g/head/d, TN 34.7 g/head/d, and TP 3.67 g/head/d.
Analysis of Water Cycle Effect according to Application of LID Techniques
Lee, Jungmin ; Lee, Yun ; Choi, Jongsoo ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 411~421
DOI : 10.17663/JWR.2014.16.3.411
At present, the development in rainwater management approach is still insufficient due to the numerous adverse effects of urbanization. Storm water management is being developed to restore the natural state of water cycle undergoing several processes which were hindered such as infiltration and evapotranspiration. Low Impact Development (LID) was established in order to reduce the negative effects of urbanization to our environment. These developments can be used to respond to the effects of climate change such as heat island phenomenon. The effects of the development of new town in the district plan with application of LID facilities were studied and reported. Typically, LID facilities were applied in small scale development and were rarely used in large-scale development. Most of studies, however, did not assessment the effects of large-scale development projects with LID application to the natural water cycle. This study was conducted to simulate the urban hydrologic cycle simulation on Asan-Tangjeong in Korea. This study may be used in urban hydrologic cycle simulation and establishment of an urban water management plan in the future. Lastly, this study generated a model using the recently updated SWMM5 which determined the hydrologic cycle simulation after installation of LID facilities.
Characteristics of Stormwater Runoff with respect to Pavement Types
Kim, Cheolmin ; Choi, Jiyeon ; Lee, Jung Min ; Cho, Hyejin ; Kim, Lee-Hyung ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 423~429
DOI : 10.17663/JWR.2014.16.3.423
Due to high imperviousness rates of the roads, various pollutants originated from vehicle activities and air depositions are accumulated on the road surfaces. The washed-off pollutants can deteriorate the water quality and destroy the aqua-ecosystems with their toxicity. Usually the roads are paved with asphalt and concrete, which can affect on the pollutant concentrations with different frictional forces. Therefore, this research is performed to evaluate the influences of different pavement type on discharged concentrations of pollutant. The results shows the first flush phenomenon was occurred on both pavement types. However, peak concentrations are higher in concrete pavement areas than asphalt pavement because concrete pavement has high contact area with vehicles. The EMCs(Event Mean Concentration) also shows high values in concrete paved roads. As a result of this research, it can be concluded the pavement type is also one of the important affecting factors on pollutant emissions from the roads.
Operating Status and Improvement Plans of Ten Wetlands Constructed in Dam Reservoirs in Korea
Choi, Kwangsoon ; Kim, Sea Won ; Kim, Dong Sup ; Lee, Yosang ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 431~440
DOI : 10.17663/JWR.2014.16.3.431
To propose the improvement and management plans to strengthen the pollutant removal efficiency of dam reservoir's constructed wetlands(CWs), the operation status and configuration of CWs (including water depth, operational flow, water flow distribution, residence time, and pollutant removal efficiency, aspect ratio, open water/vegetation ratio etc.) were analyzed in 10 major wetlands constructed in dam reservoirs. The pollutant concentrations in the inflows of the studied CWs were lower than those of American and European constructed wetlands. Especially, organic matter concentrations in all of inflows were below 3 mg/L(as BOD) due to advanced treatment of sewage disposal plant and an intake of low concentration water during dry and normal seasons. The average removal efficiency of total nitrogen(TN) and total phosphorus(TP) for 10 CWs ranged from 7.6~67.6%(mean 24.9%) and -4.9~74.5%(mean 23.7%), respectively, showing high in wetlands treating municipal wastewater. On the other hand, the removal efficiency of BOD was generally low or negative with ranging from -133.3 to 41.7%. From the analysis of the operation status and configuration of CWs, it is suggested that the low removal efficiency of dam reservoir's CWs were caused by both structural (inappropriate aspect ratio, excessive open water area) and operational (neglecting water-level management, lack of facilities and operation for first flush treatment, lake of monitoring during rainy events) problems. Therefore, to enable to play a role as a reduction facility of non-point source(NPS) pollutants, an appropriate design and operation manuals for dam reservoir's CW is urgently needed. In addition, the monitoring during rainy events, when NPS runoff occur, must be included in operation manual of CW, and then the data obtained from the monitoring is considered in estimation of the pollutant removal efficiency by dam reservoir's CW.
Risk assessment for water quality of a river using QUAL2E model
Kim, Jungwook ; Kim, Yonsoo ; Kang, Narae ; Jung, Jaewon ; Kim, Soojun ; Noh, Huiseong ; Kim, Hung Soo ;
Journal of Wetlands Research, volume 16, issue 3, 2014, Pages 441~450
DOI : 10.17663/JWR.2014.16.3.441
In this study, we consider ability of self-purification for a rational water quality management. And we assess the risk of Alkyl Benzene Sulfonic acid sodium salt(ABS) of harmful ingredients in Anseong Cheon watershed using QUAL2E model. The observations and simulated results were fitted well for BOD and ABS, but even though the trend of DO concentration change was well represented, the error between observation and simulation values was existed. We assessed the Risk assessment by calculating Risk quotient(RQ) by Predicted Exposure Concentration(PEC) and Predicted No-Effect Concentration(PNEC). Results of the impact of ABS on the self-purification of the river were Anseongcheon[0.0003(Bressan), 0.06(Criteria of Ministry of environment)], Jinwicheon[0.0002(Bressan), 0.04(Criteria of Ministry of environment). And result of the impact of ABS on the Aquatic ecosystem of the river were Anseongcheon[0.0667(Bressan), 0.005(Criteria of Ministry of environment)], Jinwicheon[0.1(Bressan), 0.0075(Criteria of Ministry of environment). All of these results were smaller than the 1.0 which is the reference value suggested by Norification No.30 of the National Institute of Environment Research. So, ABS did not affect a self-purification and aquatic ecosystem of the river. The method suggested in the study is a simple one and can provide more information for harmful ingredients than criteria of Ministry of environment.