Hipsometric, Volumetric and Growth Equations for <i>Khaya ivorensis</i>, Planted in Pirapora

Silva, Liniker Fernandes da; Ferreira, Giselle Lima; Santos, Ana Carolina Albuquerque dos; Leite, Hélio Garcia; Silva, Marcio Lopes da

doi:10.1590/2179-8087.130715

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Artigos Originais • Floresta Ambient. 23 (3) • Jul-Sep 2016 • https://doi.org/10.1590/2179-8087.130715 copy

Hipsometric, Volumetric and Growth Equations for Khaya ivorensis, Planted in Pirapora

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The present study aimed to provide hipsometric, volumetric and growth prediction equations for Khaya ivorensis species. To adjust the height equations we used data with total height and diameter at 1.3 meters collected in the city of Pirapora. For volumetric equations, we performed the scaling of 21 standing trees in the same planting. The growth equations were estimated with volume per hectare of 10 parcels, with age between 30 and 59 months. The volume calculation was performed following the method of Smalian. The adjusted equations showed satisfactory statistics, however lower than the other most widespread crops such as Eucalyptus. But in the face of the lack of technical information about the African Mahogany, this work has contributed significantly to the state of the art of the mentioned plant.

Keywords:
African mahogany; forest inventory; predicting growth

Equação	$\hat{β_{0}}$	$\hat{β_{1}}$	R² (%)	${\bar{R}}^{2}$ (%)	$S_{y, x}$ (m³)
1	3,3166 (0,01 > p)	–12,5144 (0,01 > p)	72,57	72,38	2,006
2	–0,0525 (0,64)	0,9201 (0,01 > p)	68,57	68,35	2,147

Equação	$\hat{β_{0}}$	$\hat{β_{1}}$	$\hat{β_{2}}$	R² (%)	${\bar{R}}^{2}$ (%)	$S_{y, x}$ (m³)
3	–9,792156 (0,01 > p)	2,022933 (0,01 > p)	0,813326 (0,01 > p)	96,53	96,15	0,0238
4	0,001585 (0,01 > p)	0,000037 (0,01 > p)		96,80	96,63	0,0236

dap (cm)	Altura total (m)
dap (cm)	6	8	10	12	14	16	18	20	22
6	0,0090	0,0114	0,0136	0,0158	0,0179	0,0200	0,0220	0,0240	0,0259
8	0,0161	0,0204	0,0244	0,0283	0,0321	0,0358	0,0394	0,0429	0,0463
10	0,0253	0,0320	0,0383	0,0445	0,0504	0,0562	0,0618	0,0674	0,0728
12	0,0366	0,0462	0,0554	0,0643	0,0729	0,0812	0,0894	0,0974	0,1053
14	0,0500	0,0631	0,0757	0,0878	0,0995	0,1110	0,1221	0,1331	0,1438
16	0,0655	0,0827	0,0992	0,1151	0,1304	0,1454	0,1600	0,1743	0,1884
18	0,0831	0,1050	0,1259	0,1460	0,1655	0,1845	0,2030	0,2212	0,2390
20	0,1028	0,1299	0,1558	0,1807	0,2048	0,2283	0,2513	0,2738	0,2958
22	0,1247	0,1576	0,1889	0,2191	0,2484	0,2769	0,3047	0,3320	0,3587
24	0,1487	0,1879	0,2253	0,2613	0,2962	0,3302	0,3634	0,3959	0,4278
26	0,1748	0,2209	0,2649	0,3072	0,3483	0,3882	0,4272	0,4655	0,5030
28	0,2031	0,2566	0,3077	0,3569	0,4046	0,4510	0,4963	0,5407	0,5843

Equação	$\hat{β_{0}}$	$\hat{β_{1}}$	$\hat{β_{2}}$	$r_{Y \hat{Y}}$ (%)
5	143,6084 (0,01 > p)	3,2393 (0,01 > p)	0,0897 (0,01 > p)	99,31
6	–507,7478 (0,01 > p)	156,9930 (0,01 > p)		99,13

Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro Rodovia BR 465 Km 7, CEP 23897-000, Tel.: (21) 2682 0558 | (21) 3787-4033 - Seropédica - RJ - Brazil
E-mail: floram@ufrrj.br

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[1] Liniker Fernandes da Silva Departamento de Engenharia Florestal, Universidade Federal de Viçosa – UFV, Campus UFV, Avenida PH Rolfs, s/n, CEP 36570-000, Viçosa, MG, Brasil e-mail: linikerfs@gmail.com