The Vegetation Structure and Floral Changes of 5 Years after Restoration of Cheonggyecheon Stream in Korea

Abstract:

The result of 5-years monitoring (2006-2010) in Cheonggyecheon stream, 328 floral species were found in 2006. In 2007, 2008, 2009 and 2010, total 446, 444, 471 and 510 species were found respectively. And among them, 233 introduced species were found in 2006, 312 species in 2007, 308 in 2008, 314 in 2009 and 300 in 2010 were found. Hazard species were found 3-5 species during study period. The rapid increasing in introduced plants was surveyed in the early 1^st and 2^nd years. It has shown a relatively stable trend since the third year. By life form, herbaceous plants gradually increased in the early year. And annual and biennial herbs were dominated right after restoration and as time went by perennial herbs ratio increased. By family, flora belongs to Compositae family that was found most frequently. By section, 3^rd and 4^th sections constituted by natural genotypes, such as point bars, wide flood plains, riffles, ponds and marshes, were surveyed more species than 1^st and 2^nd sections constructed by artificial and non-ecological materials, such as concrete materials and narrow and straight flow channels. As a result, in stream restoration for ecological purpose, naturalized river or ecological river formation and management, rapid ecological changes would appear in the early 1^st and 2^nd years, and artificial energy were included to reduce species disturbance. In that time, the stream ecosystem could be stabilized after restoration in the early three years or so.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 1548-1554
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.1548
• Online since: August 2013
• Authors: Bon Hak Koo
• Keywords: Hazard Species, Introduced Species, Naturalized Species, Planted Species, Succession

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