Growth space requirements models for Prosopis africana (Guill & Perr) Taub tree species in Makurdi, Nigeri
Journal Title: European Journal of Biological Research - Year 2016, Vol 6, Issue 3
Abstract
All parts of Prosopis africana (Guill & Perr) Taub are used by rural communities in Nigeria, and this exposes it to degradation and a regeneration problems. There is lack of information on inventory on natural forest estates for management and decision-making. This species is facing a regeneration problem and overexploitation. The aim of this study was to developed model that can predict the growth space requirements for P. africana plantation establishment. Growing space was associated with crown size; seven crown and stem diameter relation models were tested on data recorded from P. africana trees in Makurdi-Nigeria; simple random sampling technique was used to collect data. The linear model (crown-stem diameter relation) provided the best model fitted with R2 values of 0.778 with adjusted R2 0.777. For optimum planting, fast growth and high production/yield the tree species would require a planting spacing of 4 x 4 meters; for example, that a dominant free-growing tree of diameter 52.90 cm would required 0.008 hectare of growing space with a stocking of 125 tree per hectare for P. africana. Stand density converges around 0.000016 m2. The baseline information provided by this study could serve as a guide for optimum planting distances and tree stocking in large scale plantations of P. africana species in Nigeria and international, this to avoid extinction of the economic tree.
Authors and Affiliations
Henry Japheth Dau, B. I. Chenge
Keywords
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- DOI 10.5281/zenodo.61034
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