注文島,乶音島 및 阿此島의 植生 = The Vegetation of Jumun-do, Borum-do and Acha-do Islets

다국어 초록 (Multilingual Abstract)

The vegetation of Jumun-do, Borum-do and Acha-do islets were investigated for 5 days from July 28 through August 1, 1985. In order to analyze the vegetations of these islets, their forest structures, profile diagrams and actual vegetation maps were prepared.
Vascular plants of Jumun-do, Borum-do and Acha-do islets, respectively, consist of 2 forma, 37 varieties, 213 species, 190 genera and 77 families; 3 forma, 31 varieties, 201 species, 190 genera and 76 families. Evergreen broadleaf tree was distributed scarecely and only 2 species of Euonymus japonica and Lonicera japonica. Acquatic plants ovserved in these three islets consist of 14 species, with 8 species of pteridophyta and 15 species of natralized plants. The average value of the coefficient of cryptogam (Pte-Q ) and the Urbanization Index(UI), which indicates the destruction of these of natural vegetation of three thesse islets was 0.58 and 13.6, respectively. The quotient of similarity value of Tracheopyta and naturalized plants was more than 0.45 and 0.57 in these three islets, respectively.
Both Jumun-do and Borum-do islets were divided into three stand units of Pinus thunbergii, Pinus densiflora and Pinus rigida forests.
Pinus thunbergii was the dominant species in both of the islets and the sh rub layer in these forests was dominated by Lespedeza bicolor and Zanthoxylum schinifolium, while Carex humilis and Miscanthus sinensis var purpurascens were the dominant species of the herb layer.
The stand unit of the Acha-do was Pinus densiflora forest. The shrub layer in this forest was do-minated by Lespedeza bicolor and Robinia pseudo-acacia, while Miscanthus sinensis var. purpurascens were the dominant species of the herb layer.
It may be considered that random lumbering was made to supply firewood and charcoal for th-emselves and from these Islets to the neighboring cities (Inchon and Kanghwa area) for several years after the end of World War II and their natural vegetations also were badly destructed during the Korean War of 1950.
Comparing the coefficient of cryptogam(Pte-Q) and the Urbanization Index(UI) of these islets with those of other islet and korean peninsula, the formers shows lower degree on green naturality than the letters, on the whole.

목차 (Table of Contents)

• Ⅰ.緖論
• Ⅱ.人文地理的 槪況
• Ⅲ.調査方法
• Ⅳ.調査經路別 植生槪況
• 1.注文島의 植生
• 2.乶音島의 植生
• 3.阿此島의 植生
• Ⅴ.生態學的 考察
• Ⅵ.摘要