Tree Taper Model for Selected Tree Species within University of Ibadan, Oyo State

Authors

  • Aderinola Adeola Deborah Department of Social and Environmental Forestry, University of Ibadan, Nigeria
  • Jackson Vincent Obukojopo Department of Forest Production and Products, University of Ibadan, Nigeria

DOI:

https://doi.org/10.54536/ajlsi.v1i2.777

Keywords:

Heritage Park, Model, Teak Plantation, Terminalia Radii, Tectonia Grandis

Abstract

In this study, the performance of different types of taper model for predicting tree diameters of Terminalia radii (Tent tree) at Heritage Park and Tectonia grandis (Teak) at teak plantation within University of Ibadan was examined. Data from pure (monoculture) stands of T. radii (Heritage Park) and T. grandis (Teak Plantation) containing a total of 146 tent trees and 131 teak trees respectively. Five taper models developed by various researchers were adopted, fitted and evaluated. The comparison of the model performances was basically on the analysis of three goodness-of-fit statistics and residue analysis found model 5 to be most superior in predicting the stem diameter at any point for the two species in the two study areas. The Model 2 exhibited the worst performance in fitting statistics and residual analysis results. Therefore, the same taper model should be used for prediction of diameter of the two tree species within University of Ibadan.

Downloads

Download data is not yet available.

References

Akinyele, A. O. 2010. Effects of growth hormones, rooting media and leaf size on juvenile stem cuttings of Buchholziacoriacea Engler. Annual Forest Research, 53(2), 127- 133.

Bruce, D. R., Curtis, O., & Vancoevering, C. (1968). Development of a system of taper and volume tables for red alder. Forest Science, 14(3), 339-350.

Byrne, J.C. & Reed, D.D. (1986). Complex compatible taper and volume estimation systems for red and loblolly pine. Forest Science, 32(2), 423-443.

Clutter, J.L., Fortson, J.C., Pienaar, L.V, Brister, G.H. & Bailey R.L. (1983). Timber management: A quantitative approach. John Wiley & Sons, USA. 333.

Ezenwenyi, J. U., Chukwu, O. and Ezeano, C. I. (2018). Modelling crown diameter and canopy cover estimation for Tectona grandis plantation in university of Ibadan, Nigeria. Emerging issues in sustainable forest management experiences and lesson for Nigeria, 40th annual conference of forestry Association of Nigeria, 250-251.

Falade, O.F and Oyeleye, B. (2011). Nutrient -use efficiency of Tectona grandis (linn.f) seedling on basement compleand ferric luvisol soils of Ibadan, Nigeria. Journal of Applied Agricultural Research, 3, 193-201.

Falade, O.F. (2017). Soil aggregate and carbon distribution in Tectona grandis (linn.f) plantation, Nigeria. Nigerian Journal of Agriculture, Food and Environment, 13(4), 113-117.

Figueiredo-Filho, A., Borders, B.E. & Hitch, K.L. (1996). Taper equations for Pinus taeda plantations in Southern Brazil. Forest Ecology and Management, 83, 39-46.

Gray, H.R. Form and Taper of Forest-Tree Stems. (1956). Paper No. 32 Imperial Forestry Institute University of Oxford, Oxford, UK, pp. 79.

James, C.A & Kozak, A. (1984). Fitting taper equation from standing Trees. Forestry Chronicles.

Kozak, A., Mundro, D.D. & Smith, J.H.G. (1969). Taper Functions and their Application in Forest Inventory. Forestry Chronicles, 45, 278–283.

Kaya, B., (2016). Development of stem diameter and stem volume equations for scots pine and black pine mixed stands in Devrek District. SDU Graduate School of Natural and Applied Science, Ms Thesis, 68.

Mesavage, C., and Girard J.W. (1946). Tables for estimating board foot volume of timber. Department of Agriculture, Forest Service, Washington, DC, 94.

Max, T.A. & Burkhart, H.E. (1976). Segmented polynomial regression applied to taper equations. Forest Science, 22, 283-89.

Ormerod, D.W.(1973). A simple bole model. Forestry Chronicle 49(3), 136-138.

Reed, D.D. & Byrne, J.C. (1985). A simple, variable form volume estimation system. The Forestry Chronicle, 61(2), 87-90.

Rupšys, P. (2018). Univariate and Bivariate Diffusion Models Computational Aspects and Applications to Forestry. In Stochastic Differential Equations, Basics and Applications, Deangelo, T.G.,Ed. Nova Science Publisher’s, New York, NY, USA, 1–77.

Sharma, M. & Oderwald. R.G. (2001). Dimensionally compatible volume and taper equations. Canadian Journal of Forest Research, 31, 797-803.

Sloboda, B. & Saborowski, J. (1981). Stand Taper Form as a Stochastic Process with an Example of Application. In Proceedings of the XVII IUFRO-World Congress, Kyoto, Japan, 137–150.

Wang, Y., Titus, S. J. & LeMay, V. M. (1998). Relationships between Tree Slenderness Coefficients and Tree of Stand Characteristics for Major Species in Boreal Mixed Wood Forests. Canadian Journal of Forest Research, 28(8), 1171-1183.

Downloads

Published

2022-10-27

How to Cite

Aderinola, A. D., & Jackson, V. O. (2022). Tree Taper Model for Selected Tree Species within University of Ibadan, Oyo State. American Journal of Life Science and Innovation, 1(2), 14–20. https://doi.org/10.54536/ajlsi.v1i2.777