However, due to the recent
increase in tourists, it may cause spread of naturalized
plants in Ulleungdo. Artificial interruption due to farmland
was severe in Jukdo, and like Gwaneumdo, high level of
inflow of tourists may cause problems. Generally, island
areas have higher risk of being interrupted by naturalized
plants than inland due to the size and extent, so it is
necessary to figure out the current conditions and to prepare
a management plan for the areas with high biodiversity as
Ulleung-gun area.