鳥取砂丘における植生タイプと埋土種子集団の関係

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タイトル別名
  • Relationship between Vegetation Types and Seed Banks on Tottori Sand Dune
  • トットリ サキュウ ニ オケル ショクセイ タイプ ト マイド シュシ シュウダン ノ カンケイ

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In Tottori sand dune, Tottori Prefecture, we investigated seed bank species composition of five vegetation types (bare area, Carex kobomugi community, Vitex rotundzfolia community, Robinia pseudoacacia community, Pinus thunbergii community), which are different in species composition and environment. On the basis of these results, we showed the relationship between the surface vegetation and seed bank species composition.<BR>The number of buried viable seed of tree species was few in each vegetation type, so it is considered that the differences in seed bank size among communities were caused by differences in the number of seeds of herbaceous species. Buried viable seeds of annuals and biennials existed on fixed dunes and semi-fixed dunes. Buried viable seeds of sand dune plants were found on moving sands and semi-fixed dunes and those of perennial herbs, except for sand dune plants, mainly existed on fixed dunes. Buried viable seeds of tree species were found on fixed dunes.<BR>As the seed sources of seed banks, a number of buried viable seeds were considered to be supplied within the community in Carex kobornugi community, Vitex rotundifolia community, Robinia pseudoacacia community, and Pinus thunbergii community. All buried viable seeds of bare areas were supplied from surrounding areas.

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