| Project/Area Number |
62480065
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
ARAMOTO Mitsunori Prof. Colle. of Agric. Univ. of the Ryukyus, 農学部, 教授 (20045115)
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| Co-Investigator(Kenkyū-buntansha) |
SHINZATO Takakazu Inst. Colle. of Agric. Univ. of the Ryukyus, 農学部, 助手 (50045118)
ISHIMINE Yukio Inst. Colle. of Agric. Univ. of the Ryukyus, 農学部, 助手 (30045116)
YONEMORI Shigetomo Ass.Prof. Colle. of Agric. Univ. of the Ryukyus, 農学部, 講師 (40045125)
YAMAMORI Naoshi Prof. Colle. of Agric. Univ. of the Ryukyus, 農学部, 教授 (90045097)
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| Project Period (FY) |
1987 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1988: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1987: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Keywords | Tropical and subtropical area / Extinction / Collection and preservation / Arable land weeds / Genetic resource / Wild and introduced plants / Exploited and unexploited plants / Forest resources / 熱帯・亜熱帯地域 / 絶滅の危機 / 収集・保存 / 食糧戦略 / 栽培及び野生植物 / 天然記念物 / 資源植物の分布 / 熱帯 / 亜熱帯地域 / 識源植物の分布 |
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| Research Abstract |
The present study was done in order to clarify the distribution of tropical and subtropical economically important plants in grazing land, arable land, village and forest land on Iriomote Island.
1. As arable land weeds, sugarcane field weeds of 27 families and 131 species, pineapple field weeds of 20 families and 46 species, weeds common to sugarcane and pineapple fields of 22 families and 59 species and paddy field weeds of 25 families and 69 species could be confirmed.
2. As forest vegetation, floor plants, epihyte and twining plants of 72 families and 141 species could be confirmed. Included among them are 5 subspecies, 7 varieties and 5 form.
3. As resource plants of village of eastern parts, 51 families 83 species for wild plants and 61 families 230 species for introduced plants could be confirmed.
4. The number of species in the forest survey was 91. The percentages of number of trees by species were Castanopsis sieboldii 13 %, Persea thunbergii 6 %, Pinus luchuensis 6 % , Styrax japonicus 5 % and Raphiolepsis indica ssp. umbellata 3 %. These 5 species accounted for 33 % of the whole, and the remaining 67 % was occupied by the other 86 species.
5. The important characteristics of the forest resources in Iriomote Island are diversity of tree species, composition compound storied forest.
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