Abstract
We studied the formation of heartwood in Erythrophleum fordii Oliv., an endangered rosewood species, by cross-section analysis on 52 stumps aged 28–57 years and arbitrarily sampled from natural forests in South China. Width and area of heartwood were positively correlated with age and xylem width (XW), and were independent of annual radial growth. The proportions of heartwood and sapwood areas were equal at about 40 years. The heartwood formation process was simulated by linear regression of age and XW.
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Acknowledgments
We are grateful to Mr. Er Sha and Ms. Kai-Qin Lin for their assistance in field sampling and disc measurement. We also thank Dr. Khongsak Pinyopusarerk of Black Mountain Laboratories of CSIRO Plant Industry, Australia for his editing of drafts of this manuscript.
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Project fund: This work was financially supported by the Special Research Program for Public-welfare Forestry (No. 201204301-2) and National Nonprofit Institute Research Grant of RITF (No. RITFKYYW2010-05).
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Corresponding editor: Yu Lei
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Zhao, Z., Guo, J., Wang, C. et al. Simulating the heartwood formation process of Erythrophleum fordii in South China. J. For. Res. 26, 1049–1055 (2015). https://doi.org/10.1007/s11676-015-0108-y
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DOI: https://doi.org/10.1007/s11676-015-0108-y