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Journal of Mountain Science

, Volume 12, Issue 1, pp 30–38 | Cite as

Naturalization of landscaping woody plant, Magnolia obovata potentially invasive species

  • Oh Jung Kwon
  • Choong Hyeon OhEmail author
Article

Abstract

Magnolia obovata, a tree species native to Japan, is a traditional landscaping tree that has also been introduced to various countries. M. obovata individuals have recently emerged in non-planting areas in Korea, prompting us to investigate its distribution by establishing Dosolsan in an urban forest of Daejeon City as the target site. In order to determine its naturalization, the study explored the status of population growth by examining the diameter at breast height of the individuals, and diameter diminution quotient was calculated. Cores of the trees were collected, and the age distribution was estimated by regression analysis. Reproduction possibility was analyzed by verifying the flower-blooming and fruit-bearing. Spontaneous colonization was investigated in the other potential sites which have different location and environment, respectively. The diameter distribution showed a reverse J-shaped curve, and the diminution quotient was ⩾1.8. The population was composed of different generations, thus confirming the growth of the population. The distributed M. obovata grew and flowered normally, and followed a normal life cycle. The same phenomenon was observed in other planting areas, residual forests in urban or rural areas, alluvial islands, and mountain forests. The continuous spread of M. obovata in new ecosystems may be attributable to its long-term distribution by birds, relatively fast growth, and maturity time. Investigations on the naturalization and spread of M. obovata in Korea, as well as in various countries, are warranted.

Keywords

Magnolia obovata Diameter distribution Diminution quotient Invasive plant Naturalized plant 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Graduate School, Department of Biological and Environmental ScienceDongguk UniversitySeoulKorea
  2. 2.Department of Biological and Environmental ScienceDongguk UniversitySeoulKorea

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