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Bakhshi, Reza
- A Dendrochronological Study on Acer velutinum in Northern Iran
Abstract Views :612 |
PDF Views:125
Authors
Majid Kiaei
1,
Reza Bakhshi
1
Affiliations
1 Department of Wood and Paper Science and Technology, Chalous Branch, Islamic Azad University (IAU), Chalous, Mazandaran, IR
1 Department of Wood and Paper Science and Technology, Chalous Branch, Islamic Azad University (IAU), Chalous, Mazandaran, IR
Source
Indian Journal of Science and Technology, Vol 4, No 11 (2011), Pagination: 1547-1550Abstract
This study was carried out to investigate the relationship between climate condition (temperature and precipitation) and tree-ring widths of Acer velutinum in north of Iran. A total of 13 cores from 4 trees in same site were selected to measure tree-ring. To determine the response to the climate, correlation coefficients between tree-ring widths and climate data were calculated using biological years from October of the previous year to September of the current year (by Pearson's correlation and forward stepwise). Pearson's results showed that the temperature (mean, maximum and minimum) hadn't significant effect on tree ring widths, while there is a positive relationship between monthly precipitation of August and tree-ring widths. Forward stepwise results indicated that the tree-ring width values were related to precipitation of August (57.2%) and minimum monthly temperature of March (10.8%).Keywords
Acer velutinum, Dedrochronology, Tree Ring, Temperature, Precipitation, IranReferences
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- Sevgi O and Akkemik U (2007) A dendroecological study on Pinus nigra Arn. At different altitudes of northern slopes of Kazdaglari, Turkey. J. Environ. Biol. 28, 73-75.
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- Regional Variation of Cotton Linter Fibers
Abstract Views :332 |
PDF Views:91
Authors
Reza Bakhshi
1,
Majid Kiaei
1
Affiliations
1 Department of Wood and Paper Science and Technology, Chalous Branch, Islamic AzadUniversity (IAU), Mazandaran, Iran
1 Department of Wood and Paper Science and Technology, Chalous Branch, Islamic AzadUniversity (IAU), Mazandaran, Iran
Source
Indian Journal of Science and Technology, Vol 4, No 12 (2011), Pagination: 1691-1692Abstract
This work presents the effect of regional variation (Varamin-Tehran, Klibar-Azarbayjan&Nishabor-Khorasan) on the biometry properties of cotton linter fibers in Iran. Results of analysis of variance (ANOVA) indicated that the region had significant effect on the biometry properties of cotton linter fibers. The highest and lowest of fiber length and slenderness ratio were found in Tehran and Khorasan site, respectively. The values of fiber width, cell wall thickness and Runkel ratio in Azarbayjan region and fiber lumen diameter and flexibility ratio in the Khorasan site is more than other regions. The mean of fiber length, fiber width, cell wall thickness and lumen diameter were determined 2860, 19.96, 9.28 and 10.68 μm for combined regions in Iran.Keywords
Cotton Linter, Fiber Properties, Region, IranReferences
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- Akgul M and Tozluoglu A (2009) Juvenile woods from beech (Fagus orientalis L) and pine (Pinus nigra A) plantations. Trends in Appl. Sci. Res. 4(2), 116-125.