북한산국립공원의 귀화식물 분포특성

The survey on naturalized plants of Bukhansan National Park was carried out in 8 regions from September 2010 to August 2011. The naturalized plants in Bukhansan Nataional Park were listed 74 taxa composed of 18 families, 72 species and 2 varieties, and shown as 27.3% in pattern of urbanization index. According to types of families, Compositae family covered 27 taxa (36.5%), Gramineae families had 9 taxa (12.3%), and Polygonaceae and Leguminosae family were 6 taxa (8.1%). In life form spectrum, annual plants ratio was investigated 28 taxa (37.8%) that is occupied in higher ratio. The perennial plants were 26 taxa (35.1%), biennial plants 17 taxa (23.0%), tree plants 3 taxa (4.1%) in the order. Naturalized degree 3 plants were founded as 40.5% that is distributed in highest degree. Next, naturalized degree 5 plants (37.8%), naturalized degree 2 plants(12.2%), naturalized degree 4 plants (8.1%), naturalized degree 1 plants (1.4%) were in the order. According to analysis results form place of origin and introduction periods, Europe covered 36.5%, introduction period 1 covered 52.7%, and period 3 (32.4%), and period 2 (14.9%) were shown. The wild plants disturbing ecosystem were reported 6 taxa including Rumex acetocella, Ambrosia artemisiifolia, Ambrosia trifida, Eupatorium rugosum, Aster pilosus, and Hypochoeris radicata in suvay field. Therefore, monitoring about ecological characteristics of introduction naturalized plants, is required in systematical management counterplan of naturalized plants.