Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Change in the Wetland Vegetation Structure after the Ecological Restoration

생태복원 습지의 조성 후 식생구조 변화

  • Kim, Na-Yeong (Interdisciplinary Program in Landscape Architecture, Graduate School of Environmental Studies, Seoul National University) ;
  • Song, Young-Keun (Dept. of Landscape Architecture, Graduate School of Environmental Studies, Seoul National University) ;
  • Lee, Kun-Ho (Chamecology Laboratory)
  • 김나영 (서울대학교 대학원 협동과정 조경학) ;
  • 송영근 (서울대학교 환경대학원 환경조경학과) ;
  • 이근호 (참생태연구소)
  • Received : 2018.11.19
  • Accepted : 2018.12.12
  • Published : 2018.12.31
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Abstract

We studied the change of wetland vegetation structure to understand ecological restoration process of wetlands through the field survey of ecological restoration projects in Incheon, Iksan and Busan. We compared the vegetation plan at the time of planted with the results of the vegetation monitoring in 2018, and analyzed the changes in wetland vegetation structure. Based on results, we attempted to understand the restoration process of those wetlands and discuss the management measures for sustainable wetland restoration. As a result, in the Incheon Yeonhee restoration wetland, the number of plant species was increased, from 18 species in 2016 to 29 in 2018. The dominant species, Myriophyllum verticillatum, covered the wetland most and its occupied area was increased. On the other hand, the distribution area of the planted emergent hydrophytes was reduced. The area of open water decreased from 71.7% in 2016 to 48.8% in 2018. In Busan Igidae restoration wetland, the number of plant species was increased, from 6 species in 2014 to 31 in 2018. The dominant species was Myriophyllum verticillatum and its occupied area was increased. The area of floating plant communities that planned has decreased. The open water area decreased from 83.9% in 2014 to 31.8% in 2018. In Iksan Sorasan restoration wetland, the number of plant species was increased, from 13 species in 2016 to 36 in 2018. The dominant species was Phragmites communis Trin. and its occupied area was increased. The other planted species showed a tendency to be decreased by Phragmites communis Trin. and its terrestrialization. The open water area decreased from 86.6% in 2016 to 6.7% in 2018. These results suggest that wetlands should be managed by considering the change of vegetation structure and open water areas based on the following succession process, because it affects the habitat suitability of wetland organisms and biodiversity as well. Thus, the continuous monitoring for the ecological structure of restored wetland is important, and it could be possible step to develop sustainable wetland ecological restoration model.

Keywords

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Figure 1. Change in the dominant vegetation cover and open water area from the time of completion to the current state - in the case of Incheon

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Figure 2. Change in the vegetation cover from the time of completion to the current state - in the case of Incheon

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Figure 3. Change in the dominant vegetation cover and open water area from the time of completion to the current state - in the case of Busan

HKBOB5_2018_v21n6_95_f0004.png 이미지

Figure 4. Change in the vegetation cover from the time of completion to the current state - in the case of Busan

HKBOB5_2018_v21n6_95_f0005.png 이미지

Figure 6. Change in the vegetation cover from the time of completion to the current state - in the case of Iksan

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Figure 5. Change in the dominant vegetation cover and open water area from the time of completion to the current state - in the case of Iksan

Table 1. Study sites’ overall condition

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Table 2. Proportion of the area in each cover type to the all wetland area - in the case of Incheon

HKBOB5_2018_v21n6_95_t0002.png 이미지

Table 3. Proportion of the area in each cover type to the all wetland area - in the case of Busan

HKBOB5_2018_v21n6_95_t0003.png 이미지

Table 4. Proportion of the area in each cover type to the all wetland area - in the case of Iksan

HKBOB5_2018_v21n6_95_t0004.png 이미지

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