Ring width variations of Khasi pine (Pinus kesiya Royle ex Gordon) at breast height

Title

Ring width variations of Khasi pine (Pinus kesiya Royle ex Gordon) at breast height

Journal

Journal of the Indian Academy of Wood Science
Volume 11, Issue 1 , pp 87-92

Cover Date

2014-06

DOI

10.1007/s13196-014-0123-1

Print ISSN

0972-172X

Online ISSN

0976-8432

Publisher

Springer India

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• B. R. Gogoi
• , M. Sharma 
• , C. L. Sharma

Abstract

The present study was conducted on five randomly selected trees of Khasi pine (Pinus kesiya) collected from Jaintia Hills District of Meghalaya, India. The aim of the study was to evolve an sampling procedure for ring width comparison among trees. ANOVA carried out among eight cardinal directions showed statistically non-significant variation around the circumference which suggested that any random radial direction can be taken for ring width comparison amongst Khasi pine trees. There was irregular decrease in ring width from pith to bark. A statistically significant and negative correlation existed between ring width and age. The logarithmic regression model for ring width was obtained as Y = 6.33 + (−1.09) ln X). On the basis of this model, the boundary between juvenile wood and mature wood can be marked at ring number 10 from pith and hence rings 1–10 can be regarded as juvenile wood and rings 11 to bark as mature wood.

Keywords

Khasi pine (Pinus kesiya) Ring width Radial variation Circumference Juvenile wood

References 

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Author Affiliations

• 1. Department of Forestry, Wood Science and Forest Products Laboratory, NERIST, Papum Pare, Arunachal Pradesh, India

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http://link.springer.com/article/10.1007%2Fs13196-014-0123-1