• 한국지형학회지
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• 제28권4호
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• pp.15-30
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• 2021

This study analyzed the changes in land-cover and sedimentary environment before and after flooding through drone images and sediment analysis for the Seomjin River Chimsil Wetland. The results showed that the area of some land-covers such as sand bar, grass, and trees were continuously changed. The acidity level of the sediments in the Seomjin River Chimsil Wetland was weakened gradually by flooding and EC was also decreased. The levels of organic matter, effective phosphoric acid, and CEC, however, were fluctuating depending on branches, which seems to be the result of landization as new sedimentary environment was developed and vegetation was settled after the flood. Average mean size of river sediments was found to be fine sand, and it exhibited various particle size characteristics from granule to medium silt depending on the location. As the sedimentary environment changed due to the effects of floods and typhoons, the particles were granulated or grain refined depending on the position. In the Seomjin River Chimsil Wetland, there were factors that could interfere with geomorphic development and sedimentary environment, contamination sources in and around the wetland, and natural threat factors. Therefore, in this study, a conservation and management plan was proposed to remove these threat factors and to preserve the scarcity, naturalness, and dynamics of Seomjin River Chimsil Wetland.

• 한국지형학회지
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• 제27권3호
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• pp.25-39
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• 2020

This study analyzed the management plan of Seomjin River Chimsil Wetland by identifying landscape changes through aerial photographs analysis and concentrations of sedimentation. Geophysical Landscape Change Analysis showed that vegetation accounts for more than half of the total area. The Barren land and water body was somewhere repeatedly increased and decreased and made an irregular form in the study area. The soil was acidic, and no eurtophication was shown, but it was potential to form wetland. In addition, the research area has been terrestrification of sand bar for a long period of time, forming a soil layer. Although the characteristics of river deposits were shown in the study area, the grain size was a particulate matter, and the sorting was 'very poorly sorted'. In some areas of Seomjin River Chimsil Wetland, sand bars were formed, but most areas were undergoing to terrestrification. Therefore, in order to preserve the riverine area and to serve by a bridge between the land ecosystem and the underwater ecosystem, it is very necessary to remove some vegetation, create a proper waterway, and restore the wetland.

• Ecology and Resilient Infrastructure
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• 제7권4호
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• pp.374-387
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• 2020

본 연구는 습지보호지역에 분포하는 귀화식물의 현황을 파악하여 습지보호지역의 관리방안과 생태계 변화 경향성을 모니터링하기 위한 기초자료를 제공하고자 수행하였다. 조사결과, 내륙습지 습지보호지역 21개소에서 생태계교란생물 10분류군을 포함하여 총 129분류군의 귀화식물이 출현하였다. 섬진강 침실습지에서 가장 많은 71분류군의 귀화식물이 출현하였고 무제치늪과 숨은물뱅듸오름에서는 귀화식물이 관찰되지 않았다. 귀화식물의 원산지는 북아메라카가 42분류군 (32.6%)으로 가장 많았고 1·2년생 초본식물이 68.2% (88분류군)를 차지하였다. 개망초, 토끼풀 등 건생이차초원에서 생육하는 귀화식물의 출현빈도가 높았으며 연결체를 만들어 번식하는 분지식물이 19.4% (25분류군)를 차지하였다. 귀화율과 도시화지수는 습지, 농업지역, 시가화지역 등의 입지적 요인과 양의 상관관계를 보였고 고도와 산림지역과는 음의 상관관계가 있는 것으로 분석되었다. 귀화식물의 출현빈도와 생육특성, 습지보호지역의 입지적 특성을 종합적으로 고려한 관리방안이 요구된다.