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2007•Indian Journal of ForestryRequires access

Preliminary growth models for Dalbergia sissoo Roxb. plantation in semi-arid region of central India

R. Rizvi, V. Gupta, Ajit, S. Ahlawat, A. Datta

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Abstract

Growth models were fitted for eight-year-old Dalbergia sissoo plantation in semi-arid region of Central India. High correlation was found between height and diameter at breast height (0.895). The three parameter model of the form Ln H= a + bDc, where H is height in m and D is dbh in cm, was found best for height-diameter relationship out of eight non-linear functions evaluated. R2, MSE and average prediction bias of this model comes out to be 0.819, 0.014 and 0.091, respectively. The developed model may be used for predicting heights of Dalbergia sissoo on the basis of diameter at breast height for this region.

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What this paper is about

Growth models were fitted for eight-year-old Dalbergia sissoo plantation in semi-arid region of Central India. High correlation was found between height and diameter at breast height (0.895). The three parameter model of the form Ln H= a + bDc, where H is height in m and D is dbh in cm, was found best for height-diameter relationship out of eight non-linear functions evaluated. R2, MSE and average prediction bias of this model comes out to be 0.819, 0.014 and 0.091, respectively. The developed model may be used for predicting heights of Dalbergia sissoo on the basis of diameter at breast height for this region.

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Available abstract

Growth models were fitted for eight-year-old Dalbergia sissoo plantation in semi-arid region of Central India. High correlation was found between height and diameter at breast height (0.895). The three parameter model of the form Ln H= a + bDc, where H is height in m and D is dbh in cm, was found best for height-diameter relationship out of eight non-linear functions evaluated. R2, MSE and average prediction bias of this model comes out to be 0.819, 0.014 and 0.091, respectively. The developed model may be used for predicting heights of Dalbergia sissoo on the basis of diameter at breast height for this region.

Key concepts: Dalbergia sissoo, Diameter at breast height, Arid, Dalbergia, Mathematics, Forestry, Biology, Horticulture

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