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 453
- Downloads 23
Effect of rootstock type on chlorophyll content and mineral elements concentration in scion of Kinnow mandarin
In this study was evaluated the effect of 4 citrus rootstocks consist Sour orange (Citrus aurantium L.), Bakraei (C. reticulata L.× C. aurantium L.), Mexican lime (C. aurantifolia L.) and Volkamer lemon (C. volkameriana...
Removal of organic matter from municipal wastewater using ICMBBR (intermittent cycle moving bed biofilm reactor)
New biological processes highlighted (considered-identified) as successfully wastewater treatment technologies. This study (paper) carried out to investigate the ICMBBR (intermittent cycle moving bed biofilm reactor) eff...
Investigation of PWM using Sinusoidal Waveform as a Career Signal for Reduction of Magnitude of Specified Harmonics
Many researchers have been done on PWM switching methods for finding better ways to supply the loads, which have lower harmonics in outputs. Applying of triangular career signal in SPWM is a common way. In this paper, th...
Antibacterial activity of silver nanoparticles produced by Sesamum indicum seed extract on staphylococcus epidermidis and salmonella typhi
The application of nanoscale materials and structures, usually ranging from 1 to 100 nanometers (nm), is an emerging area of nanoscience and nanotechnology. Nanosilver has been developed as a potent antibacterial, antifu...
Comparing walking and a selected aerobic exercise effect on cardiovascular risk factors in non-athletic postmenopausal women after twelve weeks of training
Given the importance of physical activity in preventing cardiovascular disease, this study compares walking and a selected aerobic exercise effects on cardiovascular risk factors in non-athletic postmenopausal (50-60 yea...