| Project/Area Number |
63560148
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学
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| Research Institution | Niigata University |
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Principal Investigator |
KAMITANI Tomohiko Niigata University, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (40152855)
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| Co-Investigator(Kenkyū-buntansha) |
MIGUCHI Hide Niigata Prefectural Forest Experiment Station, Silviculture, Researcher, 研究員
MARUYAMA Khohei Niigata University, Faculty of Agriculture, Professor, 農学部, 教授 (30018535)
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| Project Period (FY) |
1988 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1990: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1989: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1988: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Sand dune forest / Succession / Patch community / Seed dispersal / Germination / Reproductive behavior / Murid rodents / Birds / 繁殖戦略 / 鳥散布 / 広葉樹 / 侵入様式 / ヤマウルシ / シ-ドトラップ |
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| Research Abstract |
Invading and spreading manners of broad-leaved tree species into coastal Pinus stands were studied in Hokuriku and South Thohoku district in Central Japan. 102 tree species and 88 herb species were appeared and especially Prunus, Quercus and Rhus were typicla genera in those areas. Canopy gaps which created by the blighted pine trees were filling up with broad-leaved tree species.
In artificial Pinus densiflora stand on sand dune, the under vegetations were divided into 3 types. The patch community type which mainly consisted of Rhus trichocarpa was successional seral community from the no undergrowth type to the type dominated by broad-leaved tree species.
Seedfall, germination and survival of Pinus densi-flora and some broad-leaved tree species were surveyed in each community types.
Reproductive behaviors on Rhus trichocarpa, Prunus apetara var. pilosa and Quercus serrata were profitable for spreading on space and time in seral communities.
Seed of Quercus serrata and that of almost all tree species were dispersed by murid rodents and birds, respectively. Mechanisms on spreading the broadーleaved tree species were discussed.
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