Development of Height Equations for Teak (Tectona grandis L.f.) Plantation in Ketou Commune, Ketou, Republic of Benin
Asian Journal of Environment & Ecology,
Page 11-21
DOI:
10.9734/ajee/2022/v18i230309
Abstract
Aim: To develop Height equation for a seven years old Teak (Tectona grandis) plantation in Ketou commune, Republic of Benin.
Study Design: Simple random sampling technique was adopted for this study, in which, 25 plots of 20 x 20 m in size. Information was collected on the species tree height (TH) and Diameter at breast height (Dbh) at 1.3 m above the ground level on a randomly laid 25 plots of 20 x 20 m in size in the entire plantation.
Place and Duration: The study was carried out in a private Teak plantation in Ketou commune, Republic of Benin from October to December. 2021.
Methodology: The collected data was splitted into two parts: 1,552 trees were used for model development while the remaining 754 was used for data validation. Linear, semi-log, double and exponential equations were fitted to the calibrated tree height data, using stepwise regression method procedures in Statistical Package for Social Scientist (SPSS, version 20).
Results: The result revealed that, TH, Dbh and basal area (BA) of ranges between 2.4 – 16.3 m, 5.0 – 16.0 cm and 1.6 x 10-3 to 5.9 x 10-3 m2 respectively for both the calibrated and validated data set. Out of the total number of trees enumerated, only two diameter (dbh) class of 5 – 10 and 11 -15 cm was observed in the plantation. 270 trees (11.7 %) of the trees fell into lower diameter class of 5 to 10 cm, while 2,036 trees (88.3 %) fell into 11 to 15 cm class indicating that the most the tree species are still in pole stage. Correlation analysis between the dependent and independent variables were evaluated. A moderately negative correlation was exhibited with the weighted diameter at breast height. Considerable differences were found among the predictive ability of the selected models. The adjusted coefficient of determination values ranges between 55.5 and 96.7%, while the root mean square error and bias ranges between 0.026 to 1.638 and 1.2 x 10-3 to 5.6 x 10-3 respectively. Judging by the regression analysis criteria’s, Model III gave the highest R2Adj and lowest RMSE value among the competing models. The findings clearly shows that, Model III was the appropriate function to fits the data and was selected as the best equation for describing total height growth of Tectona grandis in Ketou commune, Republic of Benin.
Keywords:
- Plantation
- ketou commune
- equations
- calibrated
- validated
- residual
How to Cite
References
Ball JB, Pandey D, Hirai S. Global overview of teak plantations. In Regional seminar on site, technology and productivity of teak plantations. Chiang Mai, Thailand 1999;2629:1134.
Hart G. Timbers of South East Asia. Timber Research and Development Association. Hughenden Valley, High Wycombe, Bucks; 1973.
Aoudji AK, Burny P, Adégbidi A, Ganglo JC, Lebailly P. Scaling up the Benefits of Smallholder Forestry beyond Timber: Success story of Teak (Tectona grandis Lf) Leaves Marketing in Southern Benin. Tropicultura. 2015;33(4):322-32.
Marc Palahí, Timo Pukkala, Jari Miina, Gregorio Montero. Individual-tree growth and mortalitymodels for Scots pine (Pinus sylvestris L.) in north-east Spain. Annals of Forest Science, Springer Nature (since 2011)/EDP Science (until 2010). 2003;60(1):1-10. DOI:10.1051/forest:2002068.hal-00883671
Botkin DB, Janak JF, Wallis JR. Rationale, limitations, and assumptions of a northeastern forest growth simulator. IBM Journal of Research and Development. 1972 Mar;16(2):101-16.
Kurz WA, MJ Apps, TM. Webb, and PJ. Mcnamee. The carbon budget of the Canadian forest sector: Phase I. For. Can., North. For. Cent.,Edmonton, AB. Inf. Rep. NORX-326. 1992;93.
Vanclay JK. Modelling forest growth and yield: applications to mixed tropical forests. Wallingford, UK: CAB International; 1994.
Almeida DLCS, Silva FR, Santos AFA, Garcia ML, Wojciechowski, JC. Determinação de equação volumétrica e hipsométrica para um plantio de Tectona grandis L. F. em Alta Floresta, MT. Ciência ; 2016.
Available :https://data.worldbank.org/indicator/AG.LND.TOTL.K2?locations=BJ
da Motta AS, Almeida EJ, Vendruscolo DG, Souza HS, Medeiros RA, da Silva RS. Modelagem da altura de Tectona grandis L. f. clonal e seminal.Curtis RO. Height-diameter and height-diameter-age equations for second-growth Douglas-fir. For. Sci. 1967;13:365-375.
Burkhart HE, Parker RC, Strub MR, Oderwald MR. Yield of oldfiled loblolly pine plantations (Publication FWS-3-72). School of Forestry and Wildlife Resources, Virginia Polytechnic Institute and State University Blacksburg, USA; 1972.
Wykoff W. User's guide to the stand prognosis model. US Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station; 1982.
Huang S, Titus SJ, Wiens DP. An age-independent individual tree height prediction model for boreal spruce-aspen stands in; 1992a.
Larsen DR, Hann DW. Height-diameter equations for seventeen tree species in southwest Oregon. Oregon State University. For. Res. Lab. 1987;46.
Temesgen H. Generalized height–diameter models—an application for major tree species in complex stands of interior British Columbia. European Journal of Forest Research. 2004 Apr;123(1):45- 51.
Ketou (Benin) In Wikipedia. Retrieved June 1, 2022, Available:https://en.wikipedia.org/wiki/ketou (Benin)
Encyclopedia Britannica Adotevi, Stanislas Spero, Ronen, Dov and Law, Robin. "Benin". Encyclopedia Britannica, 10 Mar. 2021, https://www.britannica.com/place/Benin. Accessed 1 June 2022
Hui GY, Gadow KV. Zur entwicklung von einheitshöhenkurven am beispel der baumart cunninghamia lanceolata. Allgemeine Forstund Jagdzeitung. 1993;164(12):218-220.
Changhui Peng, Lianjun Zhang, Jinxun Liu. 2001"Developing and Validating Nonlinear Height–Diameter Models for Major Tree Species of Ontario's Boreal Forests", Northern Journal of Applied Forestry. 2001;1–8.
Available:https://academic.oup.com/njaf/article/18/3/87/4788527 by guest on 01 June 2022
Moore JA, Zhang L, Stuck D. Height-diameter equations for ten tree species in the Inland Northwest. Western Journal of Applied Forestry. 1996 Oct 1;11(4):132-7.
Lynch TB, Holley AG, Stevenson DJ. A random-parameter height-dbh model for cherrybark oak. Southern Journal of Applied Forestry. 2005 Feb 1;29(1):22-6.
Soares P, Tomé M, Skovsgaard JP, Vanclay JK. Evaluating a growth model for forest management using continuous forest inventory data. Forest Ecology and Management. 1995 Feb 1;71(3):251-65.
Mabvurira D, Miina J. Individual-tree growth and mortality models for Eucalyptus grandis (Hill) Maiden plantations in Zimbabwe. Forest Ecology and Management. 2002 May 15;161(1-3):231-45.
de Morais AC, Soares TS, Cruz ES. Height, volume and form factor equations for Tectona grandis Lf in Alta Floresta (MT). Scientia Agraria Paranaensis. 2020;1(1):27-37.
Misir N. Generalized height-diameter models for Populus tremula L. stands. African Journal of Biotechnology. 2010;9(28):4348-55.
Saka MG, Kenan T, Yakubu M. Juvenile height equations for plantation-grown date palm (Phoenix Dactylifera L.). International Journal of Research and Innovation in Applied Science (IJRIAS). 2021;VI(V):91–96.
-
Abstract View: 69 times
PDF Download: 25 times
