タイトルヨミ
ヒキミ エンシュウリン テンネンセイ スギ リュウボク ザイセキヒョウ ノ サクセイ
タイトル別表記
Volume Table of Natural Regenerated "SUGI"(Cryptomeria japonica D. Don)in Hikimi College Forest
ファイル
言語
日本語
著者
安井 鈞
成田 恒美
内容記述(抄録等)
(1) To complete the volume table of natural regenerated "SUGI" (Criptmeria japonica D. Don.) in the Hikimi College Forest 110 sample trees were measured.
Data of sample trees is shown in Table 1.
(2) We used the following equation ;
logV = logA+blogD+clogH
If we put,
2+logV = Y,logA = a,logD = X_1,logH = X_2
then the expression will be transformed as follows ;
Y = a+bX_1+cX_2
At first, the normal equation was calculated with the data of all sampe trees, and next we eliminated the abnormal data which was rejected at the 1 per cent level of significace.
With 109 sample trees, above equation become as follows;
Y = 1.78838X_1 + 0.91711X_2 - 2.01690
and the test of regression coefficients b, c and the constant a was very significant at the 0.01 significant level of significance.
(3)The test of multiple and partial correlation coefficient were very significant at the 1 per cent level of significance.
(4)Ajustment coefficient of bias that arises from this logarithumic equation is 1.0032.
Volume table (Table 2 ) was being revised by this coefficient.
The error ratio of the estimate of volume of a tree by this equation is about 21 per cent, and the standard error of mean or sum is (21)/(√<n>) per cent.
(5) The result of the test on fitness of volume tables for Akita district and for Western Japan is as follows; These tables are not applicable to the sample at the 1 per cent significance level.
掲載誌名
島根農科大学研究報告
6
開始ページ
(A)133
終了ページ
138
ISSN
05598311
発行日
1958-03-31
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
島根大学
備考
A,Bを含む