Diameter at breast height-crown width prediction models for Parkia biglobosa (Jacq) R. Br. ex G. Don.

B. Abdulhamid, S. A. Dawaki, Henry Japheth Dau


This study was carried out in Kano state, Nigeria with the objective of predicting crown width from diameter at breast height and the planting spacing of Parkia biglobosa (Jacq) species. This is an economic plant with multipurpose usage. This species is exposes to degradation, overexploitation and have a regeneration problems. There is lack of information on inventory for P. biglobosa (Jacq) in term of plantation establishment and management. Data from the economic tree species were collected from nine plots (sizes 100 x 100 meters each), randomly laid down. Data on trees diameter at breast height (dbh) and crown diameter were collected from each plot within the study area. The data collected were tested on five crown and stem diameter relationship models. The simple linear model was best fitted with R2 values of 0.69 to 0.85. The results shows that a dominant free-growing tree species with diameter 50.66 cm would require 0.0066 hectare of growing space with a stocking of the stand in terms of total occupancy by tree crowns of 151 trees per hectare. For optimum planting distance, fast growth and high production/yield, P. biglobosa would require a planting spacing of 4 x 4 meters (for NTFPs purpose) and 8 x 8 meters (for timber purpose). Thus, the baseline information from this study could serve as a guide for optimum planting distances and tree density in large scale plantations for countries with similar species and forest types.


Crown width; Bole diameter; Prediction; Models; Economic

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Thiombiano DN, Lamien N, Dibong DS, Boussim I. J, Belem B. The role of woody species in managing food shortage in Burkina Faso. Sécheresse. 2012; 23(2): 86-93.

Ntui VO, Uyoh EA, Urua IS, Ogbu U, Okpako EC. Regeneration of Parkia biglobosa Benth.: an important tree species of Africa. J Microbiol Biotechnol Res. 2012; 2(1): 169-177.

Elly NS, Joseph C. Parkia biglobosa: a pot ential multipurpose fodder tree legume in West Africa. Int Tree Crops J. 2012; 7: 113-139.

Teklehaimanot Z. Exploiting the potential of indigenous agroforestry trees: Parkia biglobosa and Vitellaria paradoxa in sub-Saharan Africa. Agrofor Syst. 2004; 61: 207-220.

Karou S, Tchacondo T, Tchibozo MD, Abdoul-Rahaman S, Anani K, Koudouvo K. Ethnobotanical study of medicinal plants used in the management of diabetes mellitus and hypertension in the Central Region of Togo. Pharmac Biol. 2011; 49(12): 1286-1297.

Traoré M, Baldé M, Oularé K, Magassouba F, Diakité I, Diallo A. Ethnobotanical survey on medicinal plants used by Guinean traditional healers in the treatment of malaria. J Ethnopharmacol. 2013; 150(3): 1145-1153.

Foli EG, Alder D, Miller HG, Swaine MD. Modeling growing space requirements for some tropical forest tree species. Forest Ecol Manag. 2003; 173: 79-88;

Zuhaidi YA. Local growth model in modeling the crown diameter of plantation-grown Dryobalanops aromatic. J Trop Forest Sci. 2009; 21(1): 66-71.

Dau JH, Chenge BI. Growth space requirements models for Prosopis africana (Guill & Perr) Taub tree species in Makurdi, Nigeria. Eur J Biol Res. 2016; 6(3): 209-217.

National Population Commission. Population of local government in Kano state. Federal Government of Nigeria Gazette, 2006.

Brian RL, Robert CW, Keith MS. Crown radius and diameter at breast height relationships for six bottomland hardwood species. J Arkansas Acad Sci. 2005; 59: 110-115.

Kunluvainen T. Relationship between crown projected area and components of above-ground biomass in Norway Spruce stands; empirical results and their interpretation. Forest Ecol Manag. 1991; 40: 243-260.

Onyekwelu JC. Site index curves for site quality assessment of Nauclea diderich monoculture plantations in Omo forest reserve, Nigeria. J Trop Forest Sci. 2005; 17(4): 532-542.

Phillip MS. Measuring trees and forests. CAB International, Wallingford, 1994.

Kozak A, Smith JHG. Standards for evaluating taper estimating system. Forestry Chron. 1993; 69(4): 438-444.

Mohamed OA, Ahmed E. Height diameter relationship model for Acacia nilotica in Riverine Forests - Blue Nile. J Forest Prod Industr. 2014; 3(1): 50-55.

Lawrence R, Moltzan B, Moser WK. Oak decline and the future of Missouri’s forests. Missouri Conserv. 2002; 63(7): 11-18.

Clutter JL, Fortson JC, Pienaar LV, Brister GH, Bailey RL. Timber management: a quantitative approach. Vol. 1. John Wiley and Sons, Chichester/New York, 1983.


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