Abstract
This study relates to the naturalized plants in Jeju island. The life form, origin and time of introduction of those naturalized plants were grasped by the documentary survey, and the field was surveyed thereof. The study results can be summarized like the below.First of all, the naturalized plants are be newly defined as the "plants being the non-native species in a bio-geographic province area, which are introduced thereto from the area with a different accidentally or artificially, bio-geographic environment and well adapted to the new environment while establishing a natural ecosystem."Second, it was found that the naturalized plants were total 205 taxa including 190 specifies, 13 varieties and 2 cultivar, which belong to 121 genera and 37 families. In relation to the classification per the families, there were 43 taxa of Compositae (21%), 32 taxa of Gramineae (15.6%), 17 taxa of Leguminosae (8.3%), and 13 taxa of Cruciferae (6.3%). Third, the life forms of the naturalized plants were there 92 taxa of annual plants, 30 taxa of biennial plants, 19 taxa of annual or biennial plants, 58 taxa of perennial plants, and 6 taxa of trees. Fourth, the naturalized plants, 89 taxa there of were originated from America, 71 taxa from Europe, 25 taxa from Asia, and 20 taxa from other provinces. Lastly, among the naturalized plants, 39 taxa thereof had been introduced into Jeju-Do before 1921, 23 taxa from 1922 to 1963, and 143 taxa since 1964.
제주도 귀화식물의 검토는 문헌조사 및 현지 조사를 통하여 생활형, 원산지, 도입시기를 파악하여 이루어졌으며, 그 결과를 요약하면 다음과 같다.제주도에 자라는 귀화식물은 37과 121속 190종 13변종 2품종으로 총 205분류군이었다. 또한 과별분류는 국화과의 43분류군(21%), 벼과의 32분류군(15.6%), 콩과의 17분류(8.3%), 십자화과의 13분류군(6.3%) 등의 순으로 나타난다.제주도 귀화식물의 생활형은 한해살이풀은 92분류군, 두해살이풀은 30분류군, 한해 혹은 두해살이풀은 19분류군, 여러해살이풀은 58분류군, 그리고 목본은 6분류군이었다.제주도 귀화식물의 원산지별로는 아메리카지역이 원산지인 89분류군, 유럽이 원산지인 71분류군, 아시아이 원산지인 25분류군, 기타 20분류군이 원산지별로 귀화되어 있다.제주도 귀화식물의 유입시기별로 분류하면 1921년 이전 39분류군, 1922년에서 1963년까지 23분류군 그리고 1964년 이후에는 143분류군이 귀화되어 자라고 있다.