Volume Table of Raintree (Samanea Saman) in Bangladesh by Regression Technique
ABSTRACT
Raintree (Samanea saman) is a multipurpose village tree species grown in abundance at southern and northern regions of Bangladesh. Village people need to know estimation procedure for timber inventory of this useful tree species. Data on diameter at breast height (diameter) and total height (height) of 205 standing sample trees were collected by Spiegel relascope for the purpose. The sample trees with diameter ranging 21 cm - 91 cm and height ranging 10 m - 20 m were considered for measurement. Volumes (m3) of individual trees were computed by Smalian formula. A total of 10 linear models of volume on diameter and volume (V) on diameter (D) and height (H) were examined with the sample trees. A few statistics of F, t, mean square error, multiple correlation coefficient and Furnivall Index was computed and tested for investigation of best fitted models. The two models of In(V) = 8.3023 + 2.1746 In(D) and In(V) = –9.1864 + 1.85502 In(D) + 0.8234 In(H) were found to be best fitted models. They have been recommended to estimate volume of large scale standing Raintree trees.
Raintree (Samanea saman) is a multipurpose village tree species grown in abundance at southern and northern regions of Bangladesh. Village people need to know estimation procedure for timber inventory of this useful tree species. Data on diameter at breast height (diameter) and total height (height) of 205 standing sample trees were collected by Spiegel relascope for the purpose. The sample trees with diameter ranging 21 cm - 91 cm and height ranging 10 m - 20 m were considered for measurement. Volumes (m3) of individual trees were computed by Smalian formula. A total of 10 linear models of volume on diameter and volume (V) on diameter (D) and height (H) were examined with the sample trees. A few statistics of F, t, mean square error, multiple correlation coefficient and Furnivall Index was computed and tested for investigation of best fitted models. The two models of In(V) = 8.3023 + 2.1746 In(D) and In(V) = –9.1864 + 1.85502 In(D) + 0.8234 In(H) were found to be best fitted models. They have been recommended to estimate volume of large scale standing Raintree trees.
Cite this paper
S. Islam, J. Kabir and A. Masum, "Volume Table of Raintree (Samanea Saman) in Bangladesh by Regression Technique," Open Journal of Statistics, Vol. 2 No. 1, 2012, pp. 115-119. doi: 10.4236/ojs.2012.21012.
S. Islam, J. Kabir and A. Masum, "Volume Table of Raintree (Samanea Saman) in Bangladesh by Regression Technique," Open Journal of Statistics, Vol. 2 No. 1, 2012, pp. 115-119. doi: 10.4236/ojs.2012.21012.
References
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[1] Anon, “Project Findings and Recommendation,” Village Forest Inventory, UNDP/FAO Project BGD/78/020, Terminal Report, 1982. [2] S. A. Aleem, “Project Report on Tree Volume Tariff and Bamboo Weight Tariff for Village Forest Inventory of Bangladesh,” UNDP/FAO Project BGD/78/020, 1981. [3] S. S. Islam, “Volume Tables for Some Indigenous Forest Species in Bangladesh,” Bulletin No. 3, Forest Inventory Series, BFRI, Chittagong, 1984. [4] M. R. K. Jerram and R. Bourne, “Elementary forest mensuration,” Thomas Murby and Company, London, 1949. [5] S. S. Islam, N. A. Reza, M. Hasnin, M. A. S. Khan and M. R. Islam, “Volume Tables of Young Keora (Sonneratia Apetala) Trees for the Western Coastal Belt of Bangladesh,” Bulletin No. 1, Plantation Trial Unit Series, BFRI, Chittagong, 1992. [6] A. C. Smith, “Flora Vitiensis Nova,” Pacific Tropical Botanical Garden, Vol. 3, 1985. [7] R. R. Thaman and W. A. Whistler, “Review of Uses and Status of Trees and Forests in Land-Use Systems in Samoa, Tonga, Kiribati and Tuvalu with Recommendations for Future Action,” South Africa, 1996. [8] A. W. Whistler, “The Ethnobotany of Tonga,” Bishop Museum Bulletin in Botany, Vol. 2, 1991, pp. 1-155. [9] M. A. Latif, M. N. Islam and J. H. Chowdhury, “Tree Volume Tables for Four Species Grown in Plantations in Bangladesh,” Bulletin No. 2, Inventory Division, BFRI, Chittagong, 1984, pp. 92-121. [10] S. S. Islam, “Commercial Volume Table for Teak (Tectona Grandis Linn.f.) in Bangladesh by Regression Technique,” Bano Biggyan Patrika, Vol. 17, No. 1-2, 1988, pp. 53-67. [11] R. C. Barneby and J. W. Grimes, “Silk Tree, Guanacaste, Monkey’S Earring, a Generic System for the Synandrous Mimosaceae of the Americas. Part I. Abarema, Albizia, and Allies,” Memoirs of the New York Botanical Garden, Vol. 74, No. 1, 1996, pp. 1-292. [12] CAB International, “Forestry Compendium,” CAB International Wallingford, 2003.