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Flora and Vegetation Structure in a 15-Year-Old Artificial Wetland

조성 후 15년이 경과한 인공습지의 식물상과 식생구조

Deokjoo Son1
,
Hyohyemi Lee2
,
Eun Ju Lee1
,
Kang-Hyun Cho3
,
Dongmin Kwon4*
손 덕주1
,
이 효혜미2
,
이 은주1
,
조 강현3
,
권 동민4*
1School of Biological Sciences, Seoul National University
2Department of Eco-safety Research, National Institute of Ecology
3Department of Biological Sciences, Inha University
4Assum Ecological System Inc.
1서울대학교 생명과학부
2국립생태원 위해생물연구부
3인하대학교 생명과학과
4㈜아썸
*교신저자. *Corresponding Author. 
31 March 2015. pp. 54-63
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Abstract

This study was conducted to investigate the flora and vegetation structure at a 15-year-old artificial wetland for the water purification in Jincheon, Korea. The percentage of species number of obligate wetland plants and facultative wetland plants totaled 40%, whereas that of obligate upland plants and facultative upland plants was 57%. This result showed that the artificial wetland in the study experienced terrestrialization. The number of annual and biennial plants that are pioneer vegetation in a successional stage was lower than that of perennial herbs as a result of the long-term stabilization of vegetation. From the results of DCA (detrended correspondence analysis), water depth played an important role on the classification of vegetation structure in an old artificial wetland. Species diversity was higher in the terrestrialized plant communities such as Iris pseudacorus and Aster koraiensis than in any other wetland communities. Plant communities could be classified according to the wetland indices; obligate upland for A. koraiensis community, facultative wetlands for Carex dispalata var. dispalata and I. pseudacorus community, and obligate wetlands for Nymphoides peltata, Nymphaea tetragona, Phragmites communis, Potamogeton maackianus, and Typha angustifolia community. In conclusion, this result suggests that wetland vegetation should be maintained against terrestrialization through the proper management of sedimentation and hydrological regime in an artificial wetland.

Keywords
Artificial wetland
Terrestrialization
Vegetation
Wetland index

본 연구에서는 충북 진천에 위치한 총 면적 3,000 m2 인 수질정화용 인공습지에서 조성 15년 후의 식물상과 식생구조를 파악하였다. 이곳 인공습지에서는 총 93종의 식물종이 출현하였고, 절대습지식물과 임의습지식물의 비율이 40%, 절대육상식물과 임의육상식물의 비율은 57%로 나타나 천이에 의하여 인공습지가 점차 육상화되었음을 확인할 수 있었다. 천이가 진행됨에 따라 천이 선구자 종인 1, 2년생 식물보다 다년생 식물의 종수 비율이 높아졌다. DCA (detrended correspondence analysis) 결과, 습지 군집 구조를 결정하는 중요한 환경요인은 수심이었다. 군집별 종다양성은 노랑꽃창포 군집, 벌개미취 군집 등의 육상화된 군집에서 높았다. 식물 군집별 습지지수는 벌개미취 군집은 육상, 삿갓사초 및 노랑꽃창포 군집은 임의습지, 노랑어리연꽃, 수련, 갈대, 새우가래 및 애기부들 군집은 절대습지로 나타났다. 결론적으로 인공습지에서는 천이에 의하여 식물 군집의 육상화가 진행되므로 퇴적과 수문 체계를 지속적으로 관리하여 습지식생을 유지할 필요가 있을 것으로 판단되었다.

키워드
인공습지
육상화
식생
습지지수
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 2
  • No :1
  • Pages :54-63
  • Received Date : 2015-03-04
  • Revised Date : 2015-03-11
  • Accepted Date : 2015-03-20
  • DOI :https://doi.org/10.17820/eri.2015.2.1.054
Journal Informaiton Ecology and Resilient Infrastructure Ecology and Resilient Infrastructure
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