To analyze the distribution characteristics of alien plants in various habitat types, 249 sites were selected from four administrative districts in the Gyeongsang region of Korea. The survey was conducted across nine different habitat types. A total of 115 species of alien plants were collected; comprising 23 families, 73 genera, 112 species, and 3 varieties. Species from the family Compositae were the most common at 33.0%. Raunkiaer’s life forms had the highest occurrence rate with 70 species (60.9%) of therophytes (Th) followed by 30 species (26.1%) of hemicryptophytes (H) and 8 species (7.0%) of geophytes (G). The distributions of alien plant species per habitat type were: 81 species on the roadside; 80 species on vacant lots and artificial habitats; 67 species in streams; 53 species in grasslands; 47 species in cultivated lands; and 39 species on the coast. Since 2017, the number of alien plants has increased in Gyeongju-si, Cheongdo-gun, and Pohang-si, and decreased in Ulsan Metropolitan-si. In each region, 614 taxa were observed. The invasive alien species, Sicyos angulatus, Hypocaeris radicata, and Solanum carolinense, were observed for the first time and are expected to further increase the disturbance of the ecosystem.

Abstract
서 론
재료 및 방법
    1. 연구대상지
    2. 연구방법
결과 및 고찰
    1. 식물상
    2. 생활형
    3. 서식지 유형별 분포
    4. 지역별 외래식물 유입
REFERENCES

• 김의주(국립공주대학교 생명과학과) | Eui-Joo Kim (Department of Life Science, Kongju National University)
• 이효혜미(국립생태원) | Hyo-Hye-Mi Lee (National Institute of Ecology)
• 이정민(국립공주대학교 생명과학과) | Jung-Min Lee (Department of Life Science, Kongju National University)
• 조규태(국립공주대학교 생명과학과) | Kuy-Tae Cho (National Institute of Ecology) Corresponding author