• Title/Summary/Keyword: riparian buffer zone

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Reference information for realizing ecological restoration of river: A case study in the Bongseonsa stream

  • Park, Sung Ae;Kim, Gyung-Soon;Pee, Jung-Hun;Oh, Woo-Seok;Kim, Hye-Soo;Lee, Chang Seok
    • Journal of Ecology and Environment
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    • v.36 no.4
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    • pp.235-243
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    • 2013
  • In Korea, where the plain land is greatly deficient as a mountainous nation, most of riparian zones were transformed into agricultural fields and urban areas. Excessive use of the land, which is close to river, makes the rivers enduring severe pollution stresses. Disappearance of riparian buffer, which plays a function of filter in the riverside, appears as a main factor aggravating water pollution of rivers. In this respect, it is imperative to restore the lost riparian vegetation. This study found out restoration models of riparian vegetation from the Bongseonsa stream, which has remnant riparian vegetation patches as a conservation reserve. Feasible reference information applicable for restoration of riparian vegetation was shown in the species level in the order of herb, shrub, and tree and sub-tree zones as far away from the waterway. Those information could contribute to restoring integrate and healthy rivers and streams beyond simple landscaping differently from the other restoration projects when they will be applied to the restoration project to be carried out in the future. In addition, the spatial range of river and stream, background that riparian zone disappeared in Korea, and application plan of the obtained reference information were discussed.

An Analysis of Land Use Patterns in Riparian Zones for the Geumho River Watershed Management (금호강 유역관리를 위한 수변구역의 토지이용패턴분석)

  • Park, Kyung-Hun;Oh, Jeong-Hak;Jung, Sung-Gwan
    • Journal of the Korean Association of Geographic Information Studies
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    • v.8 no.2
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    • pp.157-165
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    • 2005
  • The purpose of this study is to examine the relationship between land use patterns of riparian zones and water quality in the Geumho River watershed. A GIS database included digital land use maps (1:25,000), stream network extracted from digital topographic maps (1:5,000) and riparian zones maps by multi-buffering method. Pearson's correlation analysis was used to explain the relationship between the environmental conditions of a 30 meter buffer strip on each side and water quality. According to the result of investigation of riparian-level land use patterns, sub-watersheds on the lower Geumho River including Daegu metropolitan city were mainly developed as urban area such as residential, commercial and industrial ones, while sub-watersheds on the middle Geumho River and the main course of Nakdong River, agricultural ones such as a paddy, a dry field and an orchard. Meanwhile, the area-rate of riparian forests which play an important role in filtering nitrogen, phosphorus and sediment was estimated below the average 16%. The proportion of urban area in a 30 meter riparian bufferstrip had a negative correlation with water quality in each sub-watershed. But the proportion of forest area had a positive correlation with water quality. Henceforth, it is necessary to establish landscape planning for preparing and restoring the riparian buffer zones, concerning land form, soil type, the present land use pattern and economic aspects.

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Design of Riparian Buffer Zone by Citizen's Participation for Ecosystem Service - Case Study of Purchased Land along Gyeongan-cheon in Han River Basin - (생태계 서비스를 위한 주민 참여형 수변완충녹지 설계 고찰 - 한강수계 경안천변 매수토지 사례 연구 -)

  • Bahn, Gwon-Soo
    • Journal of Wetlands Research
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    • v.24 no.3
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    • pp.170-184
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    • 2022
  • The Riparian Buffer Zone(RBZ) is a sustainable social-ecological system created in the middle zone between water and land. For the RBZ, close communication with the local community is important, and it is necessary to promote it as a communicative environmental planning process. In this study, for the RBZ project, three strategies are presented as a communicative act to understand and implement planning. First, government-led projects were avoided and improved to a process in which citizens and stakeholders participated together, centered on local partnership. Second, it was intended to introduce design criterias in terms of enhancing the function of ecosystem services that citizens can sympathize with, and to increase acceptance and awareness through the planning of preferred spaces and facilities. Third, after a balanced plan for habitats, water cycle-based ecological environment, ecological experience and open space, citizens felt the restoration effect and value as an ecological resources, and a system was prepared to participate in the operation and management. This study will work as a process model based on citizens's participation. In addition, it will be possible to provide lessons for the change of the policy paradigm for the RBZ and the implementation of similar projects in the future.

Development and Application of a Model for Restoring a Vegetation Belt to Buffer Pollutant Discharge (수질 오염물질 배출저감을 위한 완충식생 복원 모델 개발)

  • An, Ji Hong;Lim, Chi Hong;Lim, Yun Kyung;Nam, Kyeong Bae;Pi, Jung Hun;Moon, Jeong Sook;Bang, Je Yong;Lee, Chang Seok
    • Journal of Korean Society on Water Environment
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    • v.32 no.2
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    • pp.205-215
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    • 2016
  • In order to improve water quality in the Paldang Lake, a riparian vegetation belt, treatment wetland, and artificial floating island were designed for introduction in the upland field, the estuary of tributaries, and the section of water facing mountainous land, respectively. We synthesized vegetation information collected from a reference river and found that herbaceous, shrubby, and tree vegetation zones tended to be dominated by Phragmites japonica, Phalaris arundinacea, etc.; Salix gracilistyla, S. integra, etc.; and S. koreensis, S. subfragilis, and Morus alba, respectively. In our plan, the herbaceous vegetation zone, which is established on floodplains with a high frequency of disturbance, will be left in its natural state. A shrubby vegetation zone will be created by imitating the species composition of the reference river in the ecotone between floodplain and embankment. A tree vegetation zone will be created by imitating species composition on the embankment slope. In the treatment wetland, we plan to create emerged and softwood plant zones by imitating the species composition of the Zizania latifolia community, the Typha orientalis community, the P. communis community, the S. integra community, and the S. koreensis community. The floating island will be created by restoring Z. latifolia and T. orientalis for water purification purposes.

Non-Point Source Mitigation Analysis by Applying Riparian Area in Nakdong River Using SWAT (SWAT을 이용한 수변구역 조성에 따른 낙동강유역의 비점오염원 저감효과 분석)

  • Han, Kun-Yeun;Kim, Dong-Il;Park, Kyung-Ok
    • Proceedings of the Korea Water Resources Association Conference
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    • 2007.05a
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    • pp.597-601
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    • 2007
  • 1990년대 정부는 비점오염원 부하의 심각성을 인식하여 1995년부터 한강, 낙동강, 금강 그리고 영산강 이른바 4대강 유역에 대한 비점오염원의 조사연구사업을 실시하였다. 그러나 비점오염원의 경우 처리시설만으로는 처리하는데 한계가 있다는 특성 때문에 도시지역과 비도시지역에 대한 비점오염원을 관리하기 위한 대책 마련과 제도적 관리방안의 수립이 시급한 실정이었다. 따라서 본 연구는 토지매수가 상수원 수질개선에 미치는 영향 및 효과분석을 하고, 토지매수를 통한 비점오염물질 저감효과 분석을 위해 토지매수에 따른 비점오염원에 의한 오염물질 변화 해석 및 토지매수에 따른 최적 수변녹지대 조성을 위한 식생 효과를 분석 하였다. 수변구역 내의 비점오염물질의 공공수역 유입을 억제하기 위한 방법들 중에서 보편적이고 자연친화적인 방법이 수변구역(riparian buffer strip), 또는 수변완충구역(riparian buffer zone)을 조성하여 관리하는 것이다. 수변구역은 하천유역의 토양, 식물, 동물을 포함하는 시스템으로서 하천흐름을 조절하고, 물을 저장하며, 물에서 유해한 물질을 제거할 뿐만 아니라, 수중 및 육상의 식물과 동물을 위한 서식처를 제공하는 등 수질과 수량 그리고 생태계 측면에서 중요한 지역이라고 할 수 있다. 따라서 현재 낙동강 수계에 수변구역 조성시의 수질개선효과 연구를 수행하였다. 토지매수가 상수원 수질개선에 미치는 영향 및 효과분석을 위해서 SWAT 모형을 적용하여 유량 및 수질모의를 실시하였다. 유역내 수변구역을 조성시 수변구역의 범위가 증가함에 따라 비점오염원의 감소가 크게 나타나고 있었다.로 대부분의 가정(家庭)은 아침 식사로 밥을 좋아하였다. (8) 편식을 고치는 것이 어렵다고 하였으며, 어린이 간식에 대하여는 깊은 관심을 나타냈다. 2. 영양교육(營養敎育) 현황실태(現況實態) (1)식생활(食生活)에 필요한 지식(知識)은 신문이나 잡지, 라디오와 텔레비젼을 통해서 대체로 얻고 있다. (2) 음식과 영양섭취와의 관계성이 있다고 답한 주부(主婦)는 70.8% 이었으며, 가족(家族)의 영양(營養)에 대하여 늘 생각하는 주부는 60% 이었다. 3. 식품섭취 빈도 거의 먹지 않는 식품(食品)으로 버터가 43.%로 가장 높았고, 육류의 섭취율이 낮았다. 반면, 김치와 채소류의 섭취율은 높았다. 집단간의 상관도를 보면 교육별로 김치, 장아찌, 콩이 각각 p>0.5 수준에서 유의한 차가 없었고, 나머지는 유의한 차가 있었다. 연령별로는 멸치가 유의한 차가 없었고(p>0.5), 수입별로는 콩이 유의한 차가 없었다(p>0.5). 4. 영양지식(營養知識) 검토 가정생활(家庭生活)에 필요(必要)한 일반적(一般的)인 영양지식(營養知識)은 대체적으로 낮은 편이었다. 어린이 영양, 편식의 해로움, 비만증의 해로움, 임신부 그리고 수유부 영양에 대하여는 일반적으로 알고 있다고 하였으며, 그다음으로 이유기 영양, 어린이 발육에 필요한 식품, 식품과 영양소와의 관계, 우유의 성분, 노인영양에 대하여 잘 알고 있는 비율이 낮았으며, 인체의 영양소, 식단작성여부, 간식의 이론, 식품감별법에 대하여는 가장 낮은 비율을 나타냈다. 각 영양지식은 교육정도가 높을수록 영양지식이 높았고, 교육별 집단간의 유의한 차가 나타났다. (0.001

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Deduction of Best Design Factor of Riparian Buffer Zone for Reduction of Non-Point Pollutants (비점오염 부하 저감을 위한 수변완충지대의 최적 인자 도출을 위한 연구)

  • Kim, Sung-Won;Choi, I-Song;Jung, Sang-Jun;Woo, Hyo-Seop;Oh, Jong-Min
    • Proceedings of the Korea Water Resources Association Conference
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    • 2007.05a
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    • pp.1788-1792
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    • 2007
  • 한강 "수변구역"에서 비점오염물질의 공공수역 유입을 억제하기 위한 다양한 방법들 중에서 보편적이고 자연친화적인 방법은 다양한 생물의 서식공간이며, 동시에 본류로 유입되는 과정에서 수질을 정화시키는 수질개선 공간인 수변완충구역, 또는 지대를 설정하여 관리하는 것이다. 그러나 이러한 수변완충지대 효과 분석 및 설정에 관한 연구는 국내에서 아직 수행되지 않았다. 본 연구의 목적은 수변구역의 자정능력을 높이는 것은 물론 그 밖의 하천 연안에서 비점오염물질의 차단과 처리능력을 증진시키고 수변 생태계의 서식처 보전 및 복원을 위해서 수변완충지대의 수질정화 기술개발과 생물다양성을 창출하는 수변완충지대 조성 기법을 개발하는데 있다. 본 연구에서는 기존 수변완충지의 추가적인 조성과 보완, 시험완충지 생태구조 및 기능 기초조사, 시험완충지 오염부하 저감효과의 실험 및 분석, 수변완충지대 설치 구상 등의 연구를 수행하여 수변완충지대 조성 시 설정 폭을 산정할 수 있게 하였다. 수행 지역은 한강수계 지역으로 남한강 수변인 경기도 양평군 병산리에서 실시하였으며, 잔디와 갈대, 갯버들, 혼합지역, 자연그대로의 상태(대조지역)의 5 구역으로 구분하였고, 거리별, 깊이별 샘플을 채취하여 유입수에 대한 오염물질 제거효율을 도출하고, 이를 이용하여 수변완충지대의 설계 시 필요한 유역의 폭, 면적, 길이 등과 같은 설계인자를 도출할 수 있도록 하였다.

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Spatial Estimation for Establishing Fireflies Habitat in Daegu City and Gyeongbuk Province

  • Lee, Do-Hun;Kim, Tae-Su;Kim, Jong-Yong;Park, In-Hwan;Jang, Gab-Sue
    • Journal of Forest and Environmental Science
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    • v.35 no.1
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    • pp.61-68
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    • 2019
  • The purpose of this study is to evaluate the natural habitat of Hotaria unmunsana Doi, which was first discovered at Mt. Unmun also represents a landscape indicator species for Daegu and Gyeongbuk provinces, and Luciola lateralis Motschulsky, which is the object of experiential activation at festivals in some cities in the region. The spatial range of this study is limited by Daegu City and Gyeongbuk province, and is used to predict the preference of firefly for altitude, slope, direction, shaded relief, riparian buffer zone, river environment, and farmland to analyze the area that best matches the habitat of fireflies. As a result, fireflies are highly influenced by altitude and there may be no large-scale habitats in some areas through the Nakdong and the Baekdu mountain ranges, which occur at high altitude. In most of the cities, we found major habitats around the streams and wetlands. By region, the sites were widely distributed around the cities focused on Nakdong River, and many habitats emerged around the Nakdong River tributary and gentle slopes. In order to preserve and spread the habitat of fireflies, the physical environment as well as their relationship with food chains and symbiotic organisms should be established, and excessive use of pesticides and herbicides in agricultural areas should be avoided.

Application Load Duration Curve for Evaluation of Impaired Watershed at TMDL Unit Watershed in Korea (수질오염총량 단위유역의 유량조건별 수체 손상 평가를 위한 부하지속곡선 적용성 연구)

  • Hwang, Ha-Sun;Yoon, Chun-Gyeong;Kim, Ji-Tae
    • Journal of Korean Society on Water Environment
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    • v.26 no.6
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    • pp.903-909
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    • 2010
  • The purpose of this study was evaluated on the applicability of Load Duration Curve Method (LDC Method) using HSPF watershed model and sampling data for efficient TMDLs in Korea. The LDC Method was used for assessment pollutant characteristics in watershed and water quality variation in each water flow level. Load Duration Curve is applied for judge the level of impaired water-body and can be estimated the impaired level by pollutant, such as BOD, T-N, and T-P in this study depending on variation of stream flow. As a result, BOD, T-P was usually exceed the standard value at low flow and dry hydrologic period. Improvement of effluent concentration from WWTP and riparian buffer protection zone are effective to improve the water quality. T-N showed the worst condition at mid-range hydrologic period and moist hydrologic period. Therefore, soil erosion control program and BMPs for non-point source pollution control is effective for recovery the water quality, which can be useful method for management of water quality in the plan of recovery water quality spontaneously. Applicability of LDC Method was evaluated in the Nakbon A watershed. However, we need to consider more detailed and accumulated data set such as accurate GIS data and detail pollution data, and WWTP discharge water quality data for accurate evaluation of watershed. Overall, The LDC Method is adequate for evaluation of watersheds characteristics, and its application is recommended for watershed management and TMDL Implementation.

A Landscape Ecological Classification based on Watershed Focusing Landcover Types (경관생태학적 유역관리를 위한 토지이용 유형 분류)

  • Oh, Jeong-Hak;Jung, Sung-Gwan;Kwon, Jino;Park, Kyung-Hun
    • Journal of the Korean Association of Geographic Information Studies
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    • v.10 no.4
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    • pp.22-34
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    • 2007
  • The purpose of this study is to evaluate landscape characteristics of watersheds in the Nakdong River Basin for identifying the groups of watershed with similar landcover patterns by using Geographic Information System and statistical technique. According to the results based on the cluster analysis using cluster analysis tool in the ArcGIS 8.3 program, 22 sub-watersheds were classified into three types; "Forest watershed", "Agriculture watershed", and "Urban watershed". In the forest watershed that has the least potential of ecological disturbances by human, a forest management approach based on geographic conditions and coverage types, etc., should be developed to sustain the ecological and environmental functions of forest. For the agriculture watershed, environmental-friendly agricultural techniques should be performed in the particular enhancement of riparian buffer zone to the prevent direct inflow of soils, fertilizers, and other chemicals into the stream network. Finally, in the urban watershed, an environmental-friendly plan that may increase the ratio of pervious surface and amount of green-space to should be reserved.

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Research on the Evaluation of Impaired Waterbody using the Flowrate Group at TMDL Unit Watershed in Nakdong River Basin (수질오염총량관리 단위유역 유량그룹별 수체 손상 분석)

  • Hwang, Ha-Sun;Kim, Sang-Soo;Kim, Jin-Lee;Park, Bae-Kyung
    • Journal of Korean Society on Water Environment
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    • v.28 no.6
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    • pp.933-942
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    • 2012
  • The purpose of this study is to evaluate the degree of waterbody impairment according to the flow conditions and present to the appropriate water quality improvement alternatives using observed water quality and flow for Total Maximum Daily Load (TMDL) implementation at 39 unit watersheds the nakdong river basin. Observed water quality data for 7 years are divided into five cumulative flow frequency group and comparing the each observed water quality data and TMDL Target water quality (TWQ) the last evaluate the water quality is impaired group. We found that the cumulative flow frequency group-specific the average excess rate of V group was the highest (32.86%), followed by the IV group (26.04%), group III (23.36%), II group (22.67%), I group (20.70%), the degree of impaired waterbody tended to be inversely proportional to the flow rate. Resulted from cumulative flow frequency group of impaired water quality assessment, 13 unit watersheds are impaired from a group IV and group V affected by point sources. Therefore, improvement of sewage discharge and the initial composition of the riparian buffer zone are needed. Nakbon F, Namkang D and Namkang E within 13 unit watersheds are impaired from group II and III affected by non-point sources. Therefore, application of Best Management Practices (BMPs) is needed for these watersheds. Evaluation of impaired waterbody using Cumulative flow frequency group is able to determine the extent of the judgment to TWQ exceeded by the flow conditions and helps proper setting Standard flow and planning pollutant reduction for TMDL.