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  1. 紀要論文
  2. 琉球大学農家政工学部学術報告
  3. 11号
  1. 部局別インデックス
  2. 工学部

壮令広葉樹林分の林分構成

http://hdl.handle.net/20.500.12000/19316
http://hdl.handle.net/20.500.12000/19316
18224179-9bb0-4bd2-b138-d94035262fcd
名前 / ファイル ライセンス アクション
No11p083.pdf No11p083.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2011-04-25
タイトル
タイトル 壮令広葉樹林分の林分構成
言語 ja
作成者 砂川, 季昭

× 砂川, 季昭

ja 砂川, 季昭

山盛, 直

× 山盛, 直

ja 山盛, 直

Sunakawa, Sueaki

× Sunakawa, Sueaki

en Sunakawa, Sueaki

Yamamori, Naoshi

× Yamamori, Naoshi

en Yamamori, Naoshi

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
内容記述
内容記述タイプ Other
内容記述 1. The research was made in order to obtain the basic data for future management of the broad-leaved forest, investigating the stand composition of the comparatively better part of the existing broad-leaved forest. 2. The results of the this investigation are as follows. 1) The soil pH is 4.8 in average. The soil contents 7.32% of moisture and 30.31% of organic matter. 2) The under vegetation is mostly covered with Pleioblastus linearis Nakai (on the top in special) and partly with Ardisia quinqulgona Bl., Cinnamomum Doederleinii Engl., Symplocos japonica var. Nakaharai Hayata and Antidesma japonicum S. et Z., etc. On the :surface of the area, Heterosmilax japonica Kunth, and Mussaenda parvijlora Miq. etc. are found here and there. 3) There are about 25 species in this area. The representative species is Castanopsis Sieboldii (Mak.) Hatusima that accounts 50% in number and takes 75% in volume. 4) The number of the stand per hectare is about 6,000. It has L-shaped distribution. With respect to Catanopsis Sieboldii, the main tree-crop, it looks like to have a normal distribution. In each topography, the number per unit area is evidently decrease in the valley, the mid-slop, and the top in order. 5) The maximums of the diamater at breast height and the tree height are 20 cm and 13 m, respectively. The means of the diamater at breast height and the tree height are 8.42 cm and 6.5m, respectively. In each topography, both the diamater at breast height and the tree height decrease in the top, the mid-slop, and the valley in order. The tree height specifically showed the above tendency. 6) The volume per hectare is 152 m^3 by the method of the diameter measurement, 153 m^3 by the method of the sample tree, and 168 m^3 to 209 m^3 by the method of Bitterlich. By the two-varible volume equation, V=0.0025D^<2.24516>, the volume becomes 188 m^3. The authors adopt 188 m^3 in the research. 7) The mean branch percent is 25%. 8) The stand age ranges from 15 to 40 years. The average stand age (volume age) is 30 years. 9) The regression formula of the current annual growth of the diameter is I^^^=0.1672+0.0064X. 10) The volume current annual growth per hectare is about 10 m^3, and the growth, 5.4%. 11) The mean growth of the stand per hectare is 6.3 m^3.
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 琉球大学農家政工学部
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 NA
出版タイプResource http://purl.org/coar/version/c_be7fb7dd8ff6fe43
識別子
識別子 http://hdl.handle.net/20.500.12000/19316
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 0485-7828
収録物識別子タイプ NCID
収録物識別子 AN00250570
収録物名
言語 ja
収録物名 琉球大学農家政工学部学術報告
書誌情報
号 11, p. 83-101
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