• 제목/요약/키워드: STREAM VEGETATION

검색결과 331건 처리시간 0.022초

생태적 진단결과에 기초한 창원천과 남천의 복원계획 (Restoration Plan of Changwon and Nam Streams Based on the Results of Diagnostic Assessment)

  • 안지홍;임치홍;정성희;김아름;우동민;이창석
    • 한국물환경학회지
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    • 제33권5호
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    • pp.511-524
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    • 2017
  • This study was carried out for the purpose of creating a restoration plan to improve the ecological quality of the Changwon and Nam streams. Based upon the results of comprehensive diagnostic assessment, restoration priority was given to the upstream reach, where conservation status is relatively superior. Restoration level was usually determined to practice active restoration as conservation, and the states of both Changwon and Nam streams were not so good. Restoration plans, by reach, were classified into "upstream", "midstream", and "downstream" were suggested in both terms of horizontal section frame and vegetation-based on the result of diagnostic assessment and the reference information. "Upstream", "mid-stream" and the "downstream" of Changwon and Nam streams were classified into "small-gravel- mountainous", "small-sand-plain", and "small-clay-plain streams" respectively (based on scale, and substrate and slope of river bed). The spatial arrangement of vegetation was laid out in diagram form by reflecting micro-topography and the water level of the horizontal section of river. Information regarding species composition was recommended as dominant species, which appear frequently in three vegetation zones composed of herbaceous plants, shrubs and trees and sub-tree- dominated zones divided by reflecting disturbance regime, depending on position on the horizontal section of river. Moreover, there have been prepared not only plans to improve the terrestrial ecosystems around the streams but also plans to create ecological networks, which can serve to improve the ecologic quality of the whole regional environment by serving to connect streams and terrestrial ecosystems, a process probably necessary and definitely recommended to realize true (genuine) restoration. Plans for ecological parks and networks were prepared by mimicking the species composition of Alnus japanica community, Zelkova serrata community, Carpinus laxiflora community, Quercus aliena community, and Q. serrata community.

국립공원 서식지 유형 분류 체계 구축 (Habitat Type Classification System of Korean National Parks)

  • 김정은;노백호;이정윤;조형진;진승남;최진우;명현호
    • Ecology and Resilient Infrastructure
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    • 제8권2호
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    • pp.97-111
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    • 2021
  • 국립공원에 서식하는 생물종과 서식지 간의 관계를 공간적 평가에 활용하기 위해 생물종의 생태적 특성, 공간 유형, 식생군락, 지형 및 지질 조건을 기준으로 서식지 유형 분류 체계를 개발하고 서식지 분류 지도를 제작하였다. 서식지 유형의 체계적 분류 및 판정을 위해 분류기준표를 제작하였다. 분류 체계는 구조적 서식지를 중심으로 6개 대분류로 구분하였으며, 중분류는 59개의 생태계 유형으로 분류하였다. 산림생태계는 20개, 하천 및 습지생태계는 8개, 해안생태계는 16개, 농경지는 6개, 개발지는 9개, 해양생태계는 1개로 분류하였다. 서식지 분류 체계를 기반으로 정사영상, 정밀식생도, 임상도를 활용하여 서식지 분류 지도를 작성하였다. 서식지 분류 지도는 21개 국립공원에 대해 1,461개 도엽으로 구축하였다. 본 연구의 활용성을 높이기 위해 국내 서식지 조건을 고려한 서식지 분류 체계 고도화와 조사 프로토콜을 개발하여 서식지 평가에 적용하여야 한다.

Hydraulic Residence Time in a Prototype Free Water Surface Constructed Wetland

  • Lee, Kyung-Do;Kwun, Soon-Kuk;Kim, Seong-Bae;Cho, Young-Hyun;Kim, Jin-Ho
    • 한국환경농학회지
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    • 제24권1호
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    • pp.6-11
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    • 2005
  • A prototype surface flow constructed wetland was built in the upstream area of reclaimed tidal lands to improve the water quality of Lake Sihwa by treating severely polluted stream water. In this study, a tracer test using rhodamine-WT was performed to investigate the flow characteristics and to quantify the observed hydraulic residence time (HRT) for a high-lying cell in the Banwol wetland of the Sihwa constructed wetland. The tracer test indicated that even if flow was mainly observed in the open water area of the Banwol wetland, water flowed continuously in the vegetative area and there was no dead zone. The calculated HRT (51.3 hrs), calculated by dividing the wetland volume by the wetland inflow, exceeded the observed HRT (38.7 hrs), since the short-circuiting of flux resulting from irregular topography and vegetation was not reflected in the calculated HRT. The exit tracer concentration curves were reproduced well by both the plug flow with dispersion and tanks-in-series models, indicating that the performance of the Banwol wetland can be estimated accurately using these models.

충청남도 내륙습지 특성 및 기능평가 (Characteristics and Function Assessment of Inland Wetlands in Chungnam Province)

  • 박미옥;구본학;김하나
    • 한국환경복원기술학회지
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    • 제12권5호
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    • pp.92-100
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    • 2009
  • This study was surveyed from May to October, 2008 in order to classify type distribution and evaluate the function of inland wetland as a ecological axis in Chungnam province. Assessment was done by modified-RAM (Rapid Assessment Method). RAM is consisted of total 8 functions and divided into high, moderate, low. The conservation grade of RAM is divided into 4 grades; absolute conservation, conservation, improvement and restoration. Throughout survey on total 13 wetlands of Lacustrine, Palustrine wetland which are distributed in Chungnam province, their function was assessed. As result, the 2 wetlands were judged as absolute conservation grade by assessment of 8 functional contents, and 7 sites were improvement wetlands and 4 sites were conservation wetlands. The function of wetlands assessed as conservation grade showed high in water quality protection and improvement. Also, showed high in vegetation diversity, wildlife habitat and aesthetic recreation. Meanwhile, showed low in Water quality purification, Shoreline/Stream Bank Protection. Of wetlands evaluated as conservation grade, Jeong-juk Ji and Dun-ri reservoir were assessed as absolute conservative area. These wetlands are essential to be managed continuously as a area having high ecological value. Farther, these wetlands will be done as a axis of ecological network related to 'Kumbuk jeongmaek' ecosystem.

관리지역 내 개발사업에 대한 환경성 평가방안 연구 (A Study on the Environmental Assessment of Development Projects within Management Zones)

  • 성현찬
    • 한국환경복원기술학회지
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    • 제13권3호
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    • pp.114-127
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    • 2010
  • This study aimed at reviewing the case examples of environmental assessment of development projects within management zones, identifying problems and improvement opportunities and suggesting the direction of environmental assessment for management zones that are increasingly segmented Findings showed that first, the assessment of environment soundness in management zones must incorporate the national land environmental map and wide-area ecological axes established by the Ministry of Environment. Second, regarding development activities in management zones, rather than an issue of simply destroying natural environment in a development site itself during a development period, an issue of permanently isolating ecosystems from surrounding areas in a mid/long-term perspective and continually polluting water in mid-stream/upstream regions where sites are located must be considered. Third, in the case of development projects with vast areas, existing plant communities will be disturbed and the naturalness of vegetation will gradually decline due to foreign tree species introduced for landscape architecture. Therefore, creating buffer forests at forest boundaries and planting native tree species that are same as nearby tree species must be examined. Last but not least, when assessing the environmental soundness of management zones, it would be crucial to comprehensively review the environmental, social and locational features of management zones, including surrounding areas, and set the direction of environmental assessment accordingly.

하천 부유쓰레기에 대한 분광라이브러리 특성 분석 (Analysis on Characteristics of Spectral Library to River Floating Debris)

  • 이준호;윤홍주
    • 한국전자통신학회논문지
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    • 제13권3호
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    • pp.623-632
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    • 2018
  • 본 연구는 하천 저수구역에 대하여 하천의 부유쓰레기를 탐지하고, 이때 동시에 분광라이브러리 특성들을 분석하여 효율적인 하천환경관리기술의 기초자료로 활용하는데 목적을 두었다. 부유쓰레기 탐지 구간으로 달성보-강정고령를 중심으로 현장 조사 계획을 수립하였다. 분광반사측정은 하천 주변의 식생(초지, 수목 등), 인공물(콘크리트, 구조물 등), 하천수(청수, 탁수, 녹조), 하천 주변에 산재되어 있는 하천 부유쓰레기를 대상으로 하였으며 그리고 동시에 현장에서 조사된 하천 부유쓰레기들에 대한 분광라이브러리 특성들을 각각 분석하였다.

자연형 하천 복원구간의 하천유지유량 산정을 위한 기초조사 (Basic Survey for Evaluation of Instream flow at Natural Recovery Reach)

  • 서규우;우상환;김광섭
    • 한국습지학회지
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    • 제3권2호
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    • pp.119-131
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    • 2001
  • This study uses HEC-RAS for the quantitative aspects and the QUAL2E model for the qualitative aspects of the flow of urban streams, where the natural recovery system is applied. The instream flow of the small streams is estimated using the numerical model by verifying the existing data with the acquired data. The characteristics of the model reach place more weight on the drought discharge around the ordinary discharge, and this is caused by the natural recovery system that maintains the existing bank. The data of direct discharge to the sewage treatment plant through the inception pipe, BOD, DO, temperature, and so forth, are the official data from the department of environment. Considering the characteristics of small streams, the factors for the QUAL2E model are estimated with the focus on the hydraulic conditions and the stream view. This study proposes the future improvements for the natural recovery system by investigating the practical use of the waterfront and the application of the proper instream flow. Also, the hydraulic and hydrological investigation of the covering rate by the natural vegetation and the meandering by the varying river way is performed.

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도시하천에서 자연형 저수로 호안공법의 적용과 식생복원 모니터링 - 서울시 양재천의 학여울 구간을 사례지역으로 - (Application of Close-to Nature Revetment Techniques Adapted to Low Flow Channel & Monitoring of Vegetation Restoration - Case Study for Hakyoul in the Yangjaech'on -)

  • 최정권
    • 한국환경생태학회지
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    • 제11권2호
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    • pp.210-213
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    • 1997
  • 본 연구는 하천환경의 생태적 재생을 목적으로 자연형 저수로 호안공법을 개발하기 위해 수행되었다. 이를 위해 실험하펀으로 선정한 양재천 학여울 구간에 사주부, 수충부, 얕은 만 3가지 유형의 하안경관 특성에 따라 촌 10가지 공법을 개발, 시험 족용하였다. 각 호안공법의 설계에서는 정수식물의 식재에 중점을 두었으며 설계된 공법들은 현장 적용되었고, 적용후 1년간의 경관 형성과정과 식생복원 모니터링을 실시ㅏ였다. 일ㄹ 통해 자연형 저수로 호안공법의 기술적 실행 가능성을 높여, 관행적으로 행해지고 있는 하천공법을 대체할 수 있는 생태적 대안을 제시하였다.

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Long-term Ecological Research Programme in Forestry Research Institute, Korea

  • Oh, Jeong-Soo;Shin, Joon-Hwan;Lim, Jong-Hwan
    • The Korean Journal of Ecology
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    • 제23권2호
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    • pp.131-134
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    • 2000
  • Forest vegetation in Korea can be largely divided into warm temperate, cool temperate and frigid forest zone. The cool temperate forest zone of them occupies the largest part of the Korean peninsula and it is generally divided into three subdivisions such as northern, central and southern subzone. The Forestry Research Institute established three long-term ecological research sites at Kwangnung Experiment Forest in the central subzone of the cool temperate forest zone, at the Mt. Kyebangsan Forest in the northern subzone of the cool temperate forest zone. and at the Mt. Keumsan Forest in the warm temperate forest zone. The objectives of long-term ecological research in the Forestry Research Institute, Korea are to study long-term changes of the forest ecosystems in energy fluxes, water and nutrient cycling, forest stand structure, biological diversity, to quantify nutrient budgets and fluxes among forest ecosystem compartments and to integrate ecological data with a GIS - assisted model. To achieve the objectives, forest stand dynamics. environmental changes in soil properties, stream water quality, nutrient cycling, air pollution and biological diversity have been investigated and plant phonology as an indicator of climate change has been monitored in the LTER sites.

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GIS를 이용한 상수원 보호를 위한 수변구역 지정에 관한 연구 (The Delineation of Water-Pollutant Buffering Zone for Sustaining Better Drinking Water Quality Using a GIS)

  • 김계현;윤호석;권우석
    • 환경영향평가
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    • 제9권3호
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    • pp.239-248
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    • 2000
  • The aggravating water quality from the expansion of industrialization along with increasing population lead to develop more intensive physical measures to secure better drinking water quality. This study was mainly initiated to establish a water-pollutant buffering zone for the upper stream basin of Paldang--the major source area of drinking water for the metropolitan Seoul and suburban areas with a population more than 13 million. Two different criteria were considered in determining the buffering distance from the edge of the streamflow : 1km-width buffer zone for the special protection area which has been strictly controlled by the conventional laws for the protection of drinking water supply, and 500m-width buffer zone for the rest of the area. To delineate the exact boundaries of the water-pollutant buffering zone, GIS database was created integrating topography, hydrography, cadastral, and other related layers. The newly designated water-pollutant buffering zone would contribute to improve the water quality in a long term along with the conservation of the wet land. More study, however, should be made within the water-pollutant buffering zone such as the detailed survey of the pollutants, vegetation, and ecosystem for more effective management of the buffering zone.

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