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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 50号
  1. 部局別インデックス
  2. 農学部

八重山地域の放牧草地における牧草と雑草の生産性と植生の年次的推移

http://hdl.handle.net/20.500.12000/3594
http://hdl.handle.net/20.500.12000/3594
b6b0de99-a394-43d0-83fd-f471c3a20071
名前 / ファイル ライセンス アクション
KJ00004258132.pdf KJ00004258132.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 八重山地域の放牧草地における牧草と雑草の生産性と植生の年次的推移
言語 ja
作成者 川本, 康博

× 川本, 康博

ja 川本, 康博

佐次田, 桂子

× 佐次田, 桂子

ja 佐次田, 桂子

市来, 孝子

× 市来, 孝子

ja 市来, 孝子

波平, 知之

× 波平, 知之

ja 波平, 知之

Kawamoto, Yasuhiro

× Kawamoto, Yasuhiro

en Kawamoto, Yasuhiro

Sazita, Keiko

× Sazita, Keiko

en Sazita, Keiko

Ichiki, Takako

× Ichiki, Takako

en Ichiki, Takako

Namihira, Tomoyuki

× Namihira, Tomoyuki

en Namihira, Tomoyuki

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
主題
言語 ja
主題Scheme Other
主題 牧草
言語 ja
主題Scheme Other
主題 放牧草地
言語 ja
主題Scheme Other
主題 雑草
言語 ja
主題Scheme Other
主題 植生
言語 ja
主題Scheme Other
主題 優占種
内容記述
内容記述タイプ Other
内容記述 本研究では八重山地域の放牧草地の草地生産性と植生の年次的推移を明らかにするため,石垣島と黒鳥それぞれ2草地を対象として,4年間に渡る調査を行った.その結果,次のことが明らかとなった.1)各放牧草地の乾物生産量は季節変動はあるものの,4年間の調査を通じてほぼ一定で推移し,石垣島の草地では平均2.6トン/10a/年,黒島の草地では平均1.6トン/10a/年であった.しかし,放牧圧が高くなると植生の変動が認められた.2)乾物生産量と積算優占度における被度と草高の積には正の相関関係が認められ,放牧草地の生産量が推定されることが示された.3)各調査放牧草地の侵入雑草種は数種から30種を越える場合もあることが観察された.
内容記述タイプ Other
内容記述 This study was conducted to investigate the annual changes of the pasture production and vegetation including weeds on the four subject pastures in Yaeyama district for throughout four years and analyze the effect of invaded weeds and pasture management on the quantitative movement of pasture productivity. The pasture production was almost constant throughout four years. However, the dominant species in pasture has changed from giant star grass and guinea grass into giant star grass by comparative high grazing pressure, and some weed species have invaded with the passage of time. The dry matter yields in grazing pasture was estimated as the regression equation was obtained between dry matter yields in a quadrat and the product of coverage and plant height out of a quadrat. The number of weed species from several to over 30 species was observated in the subject pastures.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3594
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 50, p. 41-51
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