Fitting of diameter distribution using some statistical models (distributions)(Case study: Khyroudkenar forest, Noshahr)
In order to study dbh distribution of trees in uneven- aged stands and fitting tree diameter using statistical distributions, data of Gorazbon district of Khyroudkenar forest were used. 196 trees were selected randomly as sample and their dbh were analyzed. After basic calculation, three distributio...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | fas |
| Published: |
Research Institute of Forests and Rangelands of Iran
2009-03-01
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| Series: | تحقیقات جنگل و صنوبر ایران |
| Subjects: | |
| Online Access: | http://ijfpr.areeo.ac.ir/article_107901_68e7457756a408fee77d68a683868862.pdf |
| Summary: | In order to study dbh distribution of trees in uneven- aged stands and fitting tree diameter using statistical distributions, data of Gorazbon district of Khyroudkenar forest were used. 196 trees were selected randomly as sample and their dbh were analyzed. After basic calculation, three distribution: Exponential, Gamma and Lognormal were used to fit on dbh data. Results of Chi-Square and Kolmogorv-Smirnov tests showed that Exponential distribution can not determine diameter distribution of trees, and between two others, the Gamma is more appropriate |
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| ISSN: | 1735-0883 2383-1146 |