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九州大学農学部附属演習林福岡演習林(以下, 福岡演習林)では1922年に現在の福岡県糟屋郡篠栗町および久山町に設置されてから現在まで森林の管理を継続的に行ってきた。しかし, 福岡演習林内の植物相については1934年以後報告が無くその後の植物相の変化は明らかでない。そこで本調査では福岡演習林の林班ごとの植物相を調べ77年間での変化を検討した。本調査で維管束植物は小葉植物2科3種, シダ類16科59種..., 裸子植物4科7種, 被子植物87科353種で合計422種が確認され, 種組成は1934年の調査と大きく異なった。調査した440方形区において出現頻度の上位5種はテイカカズラ, ヒサカキ, シロダモ, ヤブニッケイ, ネズミモチだった。出現種数は多い順にキク科30種, バラ科22種, オシダ科19種, シソ科17種, マメ科14種だった。また18種の帰化植物が出現し, うち8種は環境省の指定する要注意外来生物であった。
Kasuya Research Forest of Kyushu University, which is located in Sasaguri Town and Hisayama Town, Fukuoka Prefecture, has been managed the research forest since 1922. The first and only survey of the entire vegetation in the Research Forest was made in 1934. This study aimed to show the present vegetation of the forest and it’s changes for 77 years. The survey was conducted in all 22 areas of the forest. The species composition was remarkably different from the previous survey. The flora of vascular plants recorded were 2 families of Lycopsids including 3 species, 16 families of Ferns including 59 species, 4 families of Gymnospermae including 7 species, and 87 families of Angiospermae including 353 species. Trachelospermum asiaticum, Eurya japonica, Neolitsea sericea, Cinnamomum tenuifolium and Ligustrum japonicum were dominant species. Family name and number of recorded species are as follows; 30 species of Asteraceae, 22 species of Rosaceae, 19 species of Dryopteridaceae, 17 species of Lamiaceae, and 14 species of Fabaceae. Eighteen naturalized species, which were not recorded in the previous survey, were recorded, and eight of them were designated as invasive alien species by the Ministry of the Environment.続きを見る
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