Bongsu(Beacon Fire Station) is a facility that sends signals with fire and smoke and has been used in Korea since the Three Kingdoms period. This facility was installed to know the north and south crises. This trend continues until the Joseon Dynasty, and it has been somewhat completed in the 17th century. In previous studies, beacon fire was identified mainly from the border area to Hanyang. Based on this, it was classified into Gyeongbongsu, Yeonbyeonbongsu, and Naejibongsu. However, it is difficult to define the characteristics of beacon fire in coastal areas only with this classification. In the case of beacon fire in island areas, there was a tendency to value communication connection within the region rather than connection with the capital. As a case analysis for this, an academic review was conducted with the cases of Ganghwa Island and Jeju Island. As a result, it was confirmed that the role and character of the beacon vary depending on the defense system and the physical distance from the land, even if it has the topographical commonality of the same island.

This study was carried out to investigate the flora of Hyeolgusan Mt. (Ganghwado), Korea. The vascular plants collected in 8 times (from March to October 2015) were identified as 440 taxa in total, including 99 families, 276 genera, 383 species, 7 subspecies, 47 varieties, and 3 forms. In the flora of this area, Korean endemic plants were six taxa, and 33 taxa of specially designated floristic regional indicator plants by the Ministry of Environment. The red list of vascular plants according to International Union for Conservation of Nature valuation basis were three taxa. The naturalized plants were 31 taxa including Erigeron philadelphicus L., Tragopogon dubius Scop., Phleum pratense L., and so forth.