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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. 12号
  1. 部局別インデックス
  2. 工学部

ビッターリッヒ法による本数および材積の推定(2)

http://hdl.handle.net/20.500.12000/23228
http://hdl.handle.net/20.500.12000/23228
c79aa799-d962-4c06-bc8f-dad0280db040
名前 / ファイル ライセンス アクション
No12p193.pdf No12p193.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2012-02-14
タイトル
タイトル ビッターリッヒ法による本数および材積の推定(2)
言語 ja
作成者 砂川, 季昭

× 砂川, 季昭

ja 砂川, 季昭

平田, 永二

× 平田, 永二

ja 平田, 永二

Sunakawa, Sueaki

× Sunakawa, Sueaki

en Sunakawa, Sueaki

Hirata, Eiji

× Hirata, Eiji

en Hirata, Eiji

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 This research was done in order to study the estimate values that were calculated by using the hand-made simple rods. The results obtained by the research are as follows: 1) The estimate values by the Bitterlich method were calculated smaller than the plot sampling on the four areas. This reason is considered that the Standing trees were not counted accurately, that is, many standing trees were missed to count because of the local topography(especially of the inclination)and standing of the forest tree. Moreover, it is seemed to be necessary to take note in a case using a hand-made simple rod. 2)The simple rods, of which basal area factors are l,4 and l0, were used in the research. It is generally practiced that the simple rod with the smaller basal area factor is for young stands and the one with the larger basal area factor is for old stands. The research, however, led to the consideration that the use of the simple rod with the basal area factor 4was rather suitable to either young or old trees in Okinawa, whereas the use of the simple rod with the basal area factor l was undesirable in the moudtain forest. 3)The estimate values, obtained from both ration estimate and the method by breast height form factor, were very resemble. It was, therefore, considered to be feasible to apply the Table 28 of the present paper to the measurement of the stand volume. There are many such problems to solve as the diameter distribution of standing trees of the area, the variation of estimate values and the study of regression estimate. The authers expect to obtain some results by working on the problem.
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/20.500.12000/23228
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 12, p. 193-220
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