Allometric equations of biomass and carbon stocks for Quercus brantti acorn and its nutrition elements in Lordegan, Chaharmahal Va Bakhtiari

Document Type : Research article

Authors

1 Ph.D. student, Faculty of Natural Resources and Marine Sciences, University of Tarbiat Modares

2 Associate professor, Faculty of Natural Resources and Marine Sciences, University of Tarbiat Modares

3 Associate professor, Research Institute of Forests and Rangelands

4 Assistant Professor, Faculty of Natural Resources and Marine Sciences, University of Tarbiat Modares

Abstract

 
Carbon sequestration in different organs such as seed is one of the most important benefits of trees at forest ecosystems. Allocation of carbon within different tree organs is a key process in Carbon cycle. The amount of carbon at each organ, defines its residence time at ecosystem and its cycling. Acorn is important in different aspects at Zagross forests. In addition to its medical, ecological and nutritional value, the seeds have a special importance in terms of carbon sequestration and biomass production. In trial which was carried out in Chaharmahal Va Bakhtiari province of I.R. Iran, 35 individual trees of Quercus brantti Lindl. Were chosen randomly at standard and coppice forests and their quantitative characteristics were measured. After that, the acorns of the trees were harvested separately and the total wet weights was measured at field. The acorn’s dry weight, carbon deposit and nutrition elements were identified in laboratory. The results indicated that the acorn biomass of the standard trees was six times more than the coppice ones and its carbon deposit was 40% of its dry weight. Allometric models were created for the standard and coppice trees. The results of the regression models showed that the average crown diameter developed better equation with the modeling parameters of the standard trees than the coppice ones, whereas in the coppice trees, the best equation was developed by power regression model, based on shoots total height. Overall, there was several precise and suitable allometic models for acorn’s seed biomass and carbon deposit.

Keywords

References

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Iranian Journal of Forest and Poplar Research
Volume 20, Issue 4 - Serial Number 50
December 2013
Pages 564-551

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