Volume 4, Number 13 (12-2015)                   ijae 2015, 4(13): 65-77 | Back to browse issues page



DOI: 10.18869/acadpub.ijae.4.13.65

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Vahedi A A, Mataji A, Akhavan R. Modeling Annual Carbon Uptake by Saplings of Hybrid Poplar Clone (Populus euramericana 488) Through Allometric Equations. ijae. 2015; 4 (13) :65-77
URL: http://ijae.iut.ac.ir/article-1-692-en.html

Research Institute of Forests and Rangelands, Agricultural Research Education and Extension
Abstract:   (1251 Views)

Modelling allometric equations for saplings of hybrid poplar clone produce a highly accurate estimate of pure productivity and C sequestration, leading to better sales and determination of the capacity of cellulose resources and bio-energy pools. Twenty five cuttings with 25 cm length were planted within a 1×1 m2 area in the Talookola nursery, Sari, in 2011. Ten saplings were selected from the two diameter classes (0-1, 1.1-2 cm). After separating the roots and stems, they were oven-dried at 85ºC for 48 hours. According to the diameter distribution, 24 and 6 saplings, respectively, from each diameter class were uprooted. Collar diameter and height were the twe variables used to model allometric equations. Carbon factor was obtained directly by exposing the wood samples in the oven and was estimated based on organic carbon to organic material ratio. Collar diameter and height were the variables to model allometric equations. The results of allometric modelling showed that multivariate linear model including natural logarithm of diameter, logarithm of height and diameter logarithm square with mean C factor of [C] = 0.44 is the optimal equation (R2adj = 0.732 CF = 1.056) for C sequestration of superior saplings.

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Type of Study: Research | Subject: General

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