Tree-ring studies of Blue Pine (Pinus wallichiana A.B. Jacks.) in moist temperate reserve forest (Bhurban), Murree, Pakistan | [Bioscience Research • 2022]

Author(s):

1. Mahpara Ali: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

2. Sohaib Muhammad: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

3. Muhammad Tayyab: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

4. Kashif Rasool: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

5. Sidra Rafique: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

6. Hassan Nawaz: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

7. Mahrukh: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

8. Amir Ali: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

9. Zarghaam Khan: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

10. Zaheer ud din Khan: Dendrochronology Laboratory, Department of Botany, Government College University,Lahore (54000),Pakistan

Abstract:

The age and growth rate study of Blue Pine (Pinus wallichiana) of moist temperate reserve forest (Bhurban) of Tehsil Murree was conducted in three stands. A total of 64 cores from the mature trees were extracted. Samples showed scares, cracks, wounds and even thin-skinned rings which showed the impact of variety of ecological events i.e., landslides, forest fires, earthquakes etc. that caused disturbances in past times. Overall, maximum age of the tree was found to be 125 years with the growth rate of 0.13 cm/year and the Dbh was 69.57 cm and the lowest age was found to be 58 years with the growth rate of 0.10 cm/year and the Dbh was 64.72 cm. All the samples were cross dated manually. Moreover, correlation and regression analysis was performed which showed the relationships of dependent and independent variables (age, Dbh, growth rate). Dbh was not found to be consistent with growth rate of trees (R² = 0.0041) while in second stand it was quiet significant in case of age of trees (R² = 0.1205). The developed chronology will be helpful in better understanding of past climate as well as future climate prediction of study site.

Page(s): 1406-1413

DOI: DOI not available

Published: Journal: Bioscience Research, Volume: 19, Issue: 3, Year: 2022

Keywords:

Regression , Pinus wallichiana , Growth rings , DBH , Velmex measuring system

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