Biomass and leaf area index of Caucasian Hackberry (Celtis caucasica Willd.) in Taileh urban forest, Sanandaj, Iran

Document Type : Research article

Authors

1 Assistant Prof., Research Institute of Forests and Rangelands

2 Ph.D. student, Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University

3 M. Sc. of Forestry, University of Kurdistan

4 M. Sc. of Forestry, Sari Agricultural Sciences and Natural Resources University

5 Senior research expert, Research Institute of Forests and Rangelands Tehran

Abstract

 
Urban forests with various ecological and environmental benefits are one of the most important ecosystems, therefore, study of ecological parameters in urban forests is essential. In this research, one of the oldest urban forests of Sanandaj city, Taileh, with area of 1.7 ha was selected. Direct method (leaf gathering from the crown) and 100% inventory method was used to estimate leaf biomass and leaf area index (LAI) of Celtis caucasica, which was the main species. Firstly, different quantitative variables such as diameter at breast height, collar diameter, tree height, crown length and small and large diameter of crown were measured. In addition, the leaves of one fourth of the tree crown were picked off and after weighting, their dry weight were measured in laboratory. Gravimetric method was applied for calculating LAI, in which the relationship between leaf area and it`s dry weight used to estimate the total area of whole tree leaves. Allometric equations were calculated for estimation of leaf biomass and LAI. Based on the results, the mean values of leaf biomass, Specific Leaf Area (SLA) and LAI were 37 kg, 103.5 cm2/gr and 3.7 for C. Caucasica, respectively. The compound variable, DBH2×H, was the most effective factor to estimate the leaf biomass (R2=0.69), but in LAI equation, the root of DBH had the main role (R2=0.72).
 

Keywords

References

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Iranian Journal of Forest and Poplar Research
Volume 19, Issue 4 - Serial Number 46
December 2012
Pages 620-609

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