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2018 | 16 | 117-129
Article title

Prognostic Crown Diameter equations for a Mixed Species Plantation in Southern Nigeria

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EN
Abstracts
EN
The dimension of a tree crown has an apparent effect on and is strongly linked with the growth of the tree and its diverse parts. Crown information is an important part of numerous growth and yield models. Hence, empirical predictive equations for crown diameter of a mixed species plantation in Southern Nigeria were developed and evaluated in this study. In studying this phenomenon, total enumeration of the selected species in the mixed species plantation was carried out. Moreover, major growth attributes of 185 trees of six species, namely; Khaya ivorensis, Entandrophragma angolense, Terminalia ivorensis, Tectona grandis, Treculia africana and Mansonia altissima were measured and estimated using mensurational methods. Descriptive, correlation, regression and residual analyses were then applied to the quantitative data obtained from the mixed species plantation. For all the species, the best adjudged model with the best fit indices was Ln(cd) = Ln(b0) + b1·CPA·dbh, R2 = 0.936, SEE = 0.037; an indication of parsimonious potential of a predictive exponential model. This paper, therefore, revealed the possibilities of predicting crown diameter for a mixed species plantation in Nigeria with ample prospects for sustainable planning and management decisions that are relevant for any mixed species plantation.
Discipline
Year
Volume
16
Pages
117-129
Physical description
Contributors
author
  • Department of Forestry Technology, Federal College of Wildlife Management, New Bussa, Nigeria
author
  • Department of Forestry and Wildlife Management, University of Port Harcourt, Nigeria
References
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  • [11] Tahvanainen, T. and Forss, E. ( 2008). Individual tree models for the crown biomass distribution of Scots pine, Norway spruce and birch in Finland. Forest Ecology and Management, Vol. 255, Issues 3-4, Pp. 455-467.
  • [12] Temesgen, H. and Gadow, K.V. (2004). Generalized height-diameter models. An application for major tree species in complex stands of interior British Columbia. European Journal of Forest Research, Vol. 123, Pp. 45-51.
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  • [14] Warbington, R. and Levitan, J.(1992). How to estimate canopy over using maximum crown width/DBH relationships. Proceedings of the Stand Inventory Technologies 92 Conference Held in Portland, USA. Pp. 319-328.
Document Type
article
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.psjd-d0c9bef0-6339-4e01-b1d4-826ac6418580
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