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Distribution Characteristics of Riparian Vegetation in the Mid and Lower Reaches of the Nakdong River, Korea

낙동강 중.하류지역의 수변 식생 분포 특성

  • Yeo, Un-Sang (Busan Development Institute) ;
  • Lee, Yong-Min (Department of Ecological Engineering, Pukyong National University) ;
  • Kim, Ki-Sup (Department of Ecological Engineering, Pukyong National University) ;
  • Sung, Ki-June (Department of Ecological Engineering, Pukyong National University) ;
  • Kang, Dae-Seok (Department of Ecological Engineering, Pukyong National University) ;
  • Lee, Suk-Mo (Department of Ecological Engineering, Pukyong National University)
  • 여운상 (부산발전연구원) ;
  • 이용민 (부경대학교 환경시스템공학부 생태공학) ;
  • 김기섭 (부경대학교 환경시스템공학부 생태공학) ;
  • 성기준 (부경대학교 환경시스템공학부 생태공학) ;
  • 강대석 (부경대학교 환경시스템공학부 생태공학) ;
  • 이석모 (부경대학교 환경시스템공학부 생태공학)
  • Published : 2008.02.28

Abstract

Aquatic and riparian vegetation of river ecosystems are very important both in ecological and management perspectives. Vegetation surveys were conducted to understand the characteristics of riparian vegetation in the mid and lower reaches of the Nakdong River, Korea. A total of 68 families and 260 species were identified at eleven survey sites. The numbers of taxa were similar to those reported in a previous survey in 1996,but the percentage of naturalized plants increased more than two times compared to that in the previous survey. Survey sites near Yangsan Bridge and Nambu Park in Yangsan showed the highest percentage of naturalized plant species. Urbanization indices of the survey sites were high at 18.8% on average. Therophytes were the most dominant plant life form at the survey sites with 39.2% of total plants identified, followed by phanerophytes (19.2%), hemicryptophytes (18.9%), aquatic plants (13.9%), cryptophytes (5.8%), and chamaephytes (3.1%). The relative composition of hemicryptophytes decreased whereas those of therophytes and chamaephytes increased compared to those in the survey in 1996. This may be due to increase in dryness of riparian soils or degradation of riparian areas. Plant compositions at sites near Jeokpo Bridge and Hwoicheon suggest that the composition and distribution of riparian vegetation are affected by land use pattern surrounding riparian areas or human accessibility to the areas.

Keywords

Riparian vegetation;Plant life form;Nakdong River;Aquatic plant;Naturalized plant

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  1. The Characteristics of Flora and Vegetation in Hwang River, Gyeongsangnam-do vol.16, pp.1, 2013, https://doi.org/10.13087/kosert.2013.16.1.027