| File | |
| Title |
山陰地方における天然スギの直径分布
|
| Title |
On the Diameter Distribution for Natural Regenerated "SUGI" (Cryptomeria japonica D. DON) in San-in District
|
| 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
|
| Creator |
Yasui Hitoshi
Okimura Yoshito
Miyake Noboru
Ishii Hiroshi
Fujie Isao
|
| Source Title |
島根大学農学部研究報告
Bulletin of the Faculty of Agriculture, Shimane University
|
| Volume | 2 |
| Start Page | 62 |
| End Page | 68 |
| Journal Identifire |
ISSN 0370940X
|
| Descriptions |
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. |
| Language |
jpn
|
| Resource Type | departmental bulletin paper |
| Publisher |
島根大学農学部
Shimane University, Faculty of Agriculture
|
| Date of Issued | 1968-12-15 |
| Access Rights | open access |
| Relation |
[NCID] AN00108015
|
