Assessment of hydrological regimes for vegetation on riparian wetlands in Han River Basin, Korea

  • Author(s): Jaewon Kwak, Gilho Kim, Jungwook Kim, Vijay P. Singh, and Hung Soo Kim
  • DOI: 10.3319/TAO.2017.03.25.01
  • Keywords: Hydrological regimes, Riparian wetland, Inundated exceedance probability
  • The influence of hydrological regimes on vegetation community is assessed
  • Inundated exceedance probability (IEP) and its district concept are suggested
  • The spatial distribution and change of plant communities are illustrated

Hydrological regimes are regarded as one of the major determinants for wet­land ecosystems, for they influence species composition, succession, productivity, and stability of vegetation communities. Since Korea launched the Four Major River Restoration Project in 2007, the water regimes of many of the riparian wetlands have changed, that is potentially affecting vegetation properties. For ecological conser­vation and management, it is important to connect hydrological characteristics and vegetation properties. The objective of this study is to investigate the influence of hydrological regimes on vegetation community, and develop a methodology that can connect them. Inundated exceedance probability (IEP) and its district concept are suggested to gain insights into hydrological regimes on the Binae wetland that is rehabilitated by the Restoration Project in 2012 and belong to the riparian zone. Re­sults of this study indicate that the areas with P = 0.08 or lower IEPs should have the disturbance for vegetation communities, or could be changed to a hydrophilic vegeta­tion in the study area, and it should be considered in the restoration and rehabilitation project to conserve legally protected or endangered vegetation.

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