Geotechnology as a Planning Tool in the Determination of Forest Extraction Costs

Ferreira, Francisco de Assis Costa; Freitas, Luis Carlos de; Leite, Elton da Silva; Barros, Ana Paula da Silva

doi:10.1590/2179-8087.087917

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Original Article, Forest Management • Floresta Ambient. 26 (4) • 2019 • https://doi.org/10.1590/2179-8087.087917 copy

Geotechnology as a Planning Tool in the Determination of Forest Extraction Costs

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The objective of this work was to use the geotechnology study as a planning tool in determining the costs of forest extraction. The research was carried out in areas of the Forest Company that operates in the southern region of Bahia, Brazil. The work was developed in two stages, the first corresponding to the determination of production costs of the forwarder and the second in the machine’s productivity, taking as parameter the project area and the distance of extraction. The proposed methodology allowed to estimate with precision the distance of extraction, being this variable of great influence in the costs of forest extraction. The evaluated project presented 256.30 hectares of eucalyptus plantation, divided into 10 plots, with an extraction mean distance of 200 meters. According to the study, it would require the value of US$ 102,575.33 for the extraction of the wood from the project evaluated.

Keywords:
forwarder; forestry projects; geoprocessing

			Source
Fixed costs	Depreciation	$D L = \frac{V a - V r}{N + H e}$ (3)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Interest, insurance and taxes	$I M A = \frac{(V a - V r) (N + 1)}{(2 + N)} + V r J S = \frac{(I M A + i)}{H e}$ (4)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Shelter	$A = \frac{V a \times F A}{H e}$ (5)	Asae (2001); Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Administrative fees	$T = \frac{V a \times F A D}{H e}$ (6)	Asae (2001)
Variable costs	Fuel	$C b = P u \times C C$ (7)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Lubricants	$C L = I L G \times C b$ (8)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Hydraulic oil	$O H = I O H \times C b$ (9)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Tires	$P E = \frac{N p e \times V p e}{H P E}$ (10)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)
	Maintenance and Repairs	$M R = \frac{[V a \times F R 1 {(\frac{h + H e}{1000})}^{F R 2}] - [V a \times F R 1 {(\frac{h}{1000})}^{F R 2}]}{H e}$ (11)	Asae (2001)
	Workforce	$M O = \frac{S o p \times E S \times N o \times M}{H e}$ (12)	Silva et al. (2014Silva ML, Miranda GM, Cordeiro AS, Leite ES. Custos. In: Machado CC, editor. Colheita florestal. Viçosa: UFV; 2014. p. 253-285.)

Plot	Area (ha)	Wood volume (m³)	MEAD m)	EAD (m)	Productivity (m^3-1)	Extraction cost US$ m^-3)	Extraction cost (US$ ha^-1)	CET (US$ m^-3)
1	7.37	1,842.31	251.49	125.75	62.33	1.57	391.41	2,885.57
2	8.70	2,173.12	220.72	110.36	63.47	1.54	384.40	3,342.75
3	38.06	9,511.12	383.69	191.85	57.45	1.70	424.70	16,163.76
4	45.39	11,342.79	250.48	125.24	62.37	1.57	391.18	17,755.34
5	27.80	6,947.02	275.64	137.82	61.44	1.59	397.10	11,039.01
6	42.32	10,574.70	243.51	121.76	62.63	1.56	389.57	16,484.95
7	8.18	2,045.09	146.94	73.47	66.20	1.47	368.57	3,016.24
8	4.30	1,075.40	272.01	136.01	61.57	1.59	396.23	1,705.12
*9a	35.80	8,945.82	371.65	185.83	57.89	1.69	421.43	15,086.24
*9b	14.01	3,501.90	256.75	128.38	62.14	1.57	392.64	5,502.11
10	24.37	6,090.64	261.09	130.55	61.98	1.58	393.65	9,594.24
Total	256.30	64,049.91	286.19	143.09	61.05	1.60	400.21	102,575.33

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

Acompanhe os números deste periódico no seu leitor de RSS

[1] Luis Carlos de Freitas Universidade Estadual do Sudoeste da Bahia (Uesb), Departamento de Fitotecnia e Zootecnia, Estrada do Bem Querer, km 4, CEP 45031-900, Vitória da Conquista, BA, Brasil e-mail: luisfreitas@uesb.edu.br