実生出現法によるコナラ林の埋土種子集団の研究及びその植生管理への応用

DOI 日本農学文献記事索引 Web Site 被引用文献42件 参考文献17件

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  • A Study of Seed Bank in Quercus serrata Forest by Surveying Seedling Emergence and Its Application to Forest Management.
  • ミショウ シュツゲンポウ ニ ヨル コナラ リン ノ マイド シュシ シュウダ

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The object of this study is to survey what buried seeds are found in the soil under a Quercus serrata forest and when they will germinate after they are placed in a sunny place. Soil samples for the examination were collected under a Quercus serrata forest in Sakuragaoka Park, Tama city, Tokyo on June 18, 1991. The examination was carried out in an open-air, sunny place from June 1991 to July 1992.<BR>The following are what we found;<BR>1. Seedling emergence from seed bank<BR>(1) The number of germinated seedlings had three seasonal peaks; just after start of the examination, the autumn and the next spring. Within five weeks after start of the examination, the number of seedlings reached about 50% of the total, about 18% in the autumn and about 13% in the next spring.<BR>(2) Weeds usually found on arable land dominated in the germinated seedlings, followed by species grown in managed Quercus serrata forests (equal to grass-lands or forest-edges), and those in no-managed Quercus serrata forests were a only few.<BR>(3) The time of emergence differed with species.<BR>(4) Marked differences both in species and the number were observed in the buried seeds contained in the soil samples collected at places close to one another in the same forest stand.<BR>2. Application to forest management<BR>We have found the seed bank under the present Quercus serrata forest contains species grown in managed Quercus serrata forests which have potential of capability to contribute to scenic attraction of the Quercus serrata forest in the Park.

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