Volume equation and volume table of pinus pinaster Ait
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2012, Vol 3, Issue 5
Abstract
Logarithmic stem volume equation based on tree height, diameter at breast height (dbh), and on both variables were determined for pinus pinaster Ait.Data were measured in kiashahr region (north of Iran, rainfall 1187 mm year-1, 37º , 26' latitude and 49º , 57'longitude), a remnant of the kiashahr plantation, on 102 sample trees which varied between 2 and 35 cm dbh and 2 and 14m height. Least relative standard error of the volume estimation by two-variable model was 10%. The best model was determined as Ln (v)= -10.996 + 1.984 Ln(d) + 1.211 Ln(h2 / h-1.3), where stem volume (V) is in cubic meters, diameter(d)is in centimeter and height is in meter.
Authors and Affiliations
M. Yousefpour*| Dept. of forestry, Faculty of Natural resourses,Guilan university, Ms.c,uosefpoorm@yahoo.com, F. Fadaie Khoshkebijary| Dept. of forestry, Faculty of Natural resourses,Mazandaran university, Ms.c, A. Fallah| Dept.of forestry,Faculty of Natural resourses,Mazandaran University,Ph.D, F. Naghavi| Dept. of forestry, Faculty of Natural resourses,chalous university, Ms.c
Keywords
Related Articles
- EP ID EP5013
- DOI -
- Views 426
- Downloads 23
Heterogeneous slope stability optimization using firefly algorithm, simulate annealing and imperialistic competitive algorithm
Soil slope stability optimization with non-circular slip surface is considered as a complicated problem in geotechnical engineering. Therefore it is necessary to find a robust algorithm which is capable to find the best...
The study genetic variation and factor analysis for agronomic traits of Durum wheat genotypes using cluster analysis and path analysis under drought stress condition in western of Iran
In order to evaluate genetic variation of durum wheat genotypes under drought stress, and relationship between agronomic traits with grain yield under drought stress, as experiment was conducted, in Shirvan-Chrdavol rese...
Nature of wars and its consequences in poems of Zahawi
This paper investigates thoughts and viewpoints of Zahawi, Muslim poet of Iraq about war and its consequences. As a poet which extracts theory from poem, Zahawi found a great position in Arab contemporary literature. In...
An Investigation of the Role of Renewable Energy in Iran for Climate Change Mitigation
Renewable energy sources play a role in providing energy services in a sustainable manner and, in particular,in mitigating climate change. At the same time our heavy reliance on fossil fuel based energy sources dramatica...
Relationship between identity styles and self esteem
The present study was caried out with the title of analyzing the relationship between identity styles and self esteem. The participents of the study was high school students (8114 male, 6075 female) from Ardabil city, du...