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Title Transcription
サンイン チホウ ニオケル テンネン スギ ノ チョッケイ ブンプ
Title Alternative (English)
On the Diameter Distribution for Natural Regenerated "SUGI" (Cryptomeria japonica D. DON) in San-in District
File
language
jpn
Author
Yasui, Hitoshi
Okimura, Yoshito
Miyake, Noboru
Ishii, Hiroshi
Fujie, Isao
Description
This paper discribes an exprssions of diameter distribution that was reserched for the natural regenerated "SUGI" in uneven-aged stands on the Sanbe and Hikimi forest, Shimane Prefecture.
In an uneven-aged stand, the curve of numbers of trees plotted over dbh approaches an inverse J-shaped form, and this is a essential characteristic of an uneven-aged distribution. To determine whether a given diameter distribution was balanced or not, H. A. Meyer suggested plotting numbers of trees over dbh on semi-logarithmic paper. But the actual data shown that uncomform to this relationship as Fig. 1 and 2.
Hence, we fitted Pearson's frequency distribution function for the these distribution, and decided that 1 type of the distribution curve. The results of calculated was as follows.
Sanbe y = 5.14x^<-0.29101> <(12.88-x)>^<1.48863>
Hikimi y = 4.83x^<-0.35417> <(13.34-x)>^<1.49367>
The both equations confimed that well-iftting at statistic test.
Journal Title
Bulletin of the Faculty of Agriculture, Shimane University
Volume
2
Start Page
62
End Page
68
ISSN
0370940X
Published Date
1968-12-15
NCID
AN00108015
Publisher
島根大学農学部
Publisher Aalternative
Shimane University, Faculty of Agriculture
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
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