RENTABILIDADE ECONÔMICA DA PRODUÇÃO DE Pinus SPP. POR MESORREGIÃO HOMOGÊNEA NO ESTADO DO PARANÁ

Berger, Ricardo; Júnior, Romano Timofeiczyk; Santos, Anadalvo Juazeiro dos; Bittencourt, Alexandre Muzy; Souza, V. S. de; Eisfeld, Cristiane de Loyola; Polz, Willian Borelli

doi:10.5380/rf.v41i1.21198

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Similar results were reported by Malinovski et al (2006), in economic analysis of pinus in small farms located in the state of Paraná, who found IRR values between 16 and 17% and by Berger et al (2011), in an analysis of the economic profitability of Pinus spp production in the mesoregions of the state of Paraná. On the other hand, Vitale & Miranda (2010) found IRR values higher than the present study, reaching 27.2% for Pinus taeda stands in the state of Paraná.…”

Section: Optimal and Alternative Regimessupporting

confidence: 86%

Economic analysis and revenue optimization in management regimes of Pinus taeda

et al. 2017

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Economic analysis and revenue optimization in management regimes of Pinus taeda 1The objective of this work was to select, using operational research techniques, management regimes of Pinus taeda L. that maximize the revenue generated by the wood, considering different attractiveness rates. The OpTimber-LP ® software, which performs the simulations using SisPinus ® software, was used for forest optimization. The regimes consisted of different combinations of forest sites, planting densities, thinning regimes and clearcutting ages, totaling 17,760 regimes per site. Wood production was quantified and evaluated by assortment classes. Planting, thinning and harvesting costs were considered. The Annualized Net Present Value (ANPV) and the Internal Rate of Return (IRR) of each management regime were calculated. As a result, the density of 1,600 plants per ha optimized ANPV for most cases. Optimized regimes included no or only one thinning and provided ANPV of 2,753 and 158 BRL per ha and IRR of 22.9% and 2.9% for sites I and IV, respectively. It was concluded that the optimal number of thinning is reduced in lower quality sites, and the less productive the site, the later the optimal year for clear cutting. The attractiveness rate is a parameter that contributes to the selection of thinning regimes, because the larger the rate, the larger the number of thinning and the earlier they should be carried out.Keywords: operational research; annualized net present value; attractiveness rate; forest site; log assortment. Análise econômica e otimização da receita em regimes de manejo de Pinus taeda L. HassanEste trabalho teve por objetivo selecionar, por meio de técnicas da pesquisa operacional, regimes de manejo de Pinus taeda L. que maximizem a receita com a madeira produzida, considerando diferentes taxas de atratividade. Foi utilizado o software OpTimber-LP ® para a otimização florestal, o qual realiza as simulações por meio do software SisPinus ® . Os regimes foram compostos por diferentes combinações de sítios florestais, densidades de plantio, regimes de desbaste e idades para corte raso, totalizando 17.760 regimes por sítio. A produção de madeira foi quantificada e valorada mediante classes de sortimento. Custos de plantio, desbaste e colheita foram considerados. O Valor Presente Líquido Anualizado (VPLA) e a Taxa Interna de Retorno (TIR) de cada regime de manejo foram calculados. Como resultado, a densidade de 1.600 plantas por ha otimizou o VPLA para a maioria dos casos. Os regimes otimizados incluíram nenhum ou apenas um desbaste e forneceram VPLA de 2.753 e 158 reais por ha e TIR de 22,9% e 2,9%, para os sítios I e IV, respectivamente. Concluiu-se que o número ideal de desbastes é reduzido em sítios com qualidade inferior, e quanto menos produtivo for o sítio, mais tardio será o ano ideal para o corte raso. A taxa de atratividade é um parâmetro que contribui para a determinação de regimes de desbaste, pois quanto maior for essa taxa, maior deve ser o número de desbastes, bem como mais precoces devem ser suas aplica...

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Section: Optimal and Alternative Regimessupporting

confidence: 86%

Economic analysis and revenue optimization in management regimes of Pinus taeda

et al. 2017

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“…When analyzing the profitability of the cultivation of Pinus sp. in the mesoregions of the state of Paraná, considering the mechanized and manual production systems of establishment, Berger et al (2011) report that, for medium and large producers, mechanization in the implantation of Pinus sp. cultivation has become a routine practice over the years and they state that, in scale, the use of tractors increases productivity and reduces production costs.…”

Section: Discussionmentioning

confidence: 99%

REDUCTION NATURAL REGENERATION DENSITY OF Pinus elliottii BY MANUAL AND MECHANIZED MOWING

Júnior

Silva

Pelissari

et al. 2020

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The methods of conducting the natural regeneration of Pinus elliottii are alternatives to planting with seedlings, where manual or mechanized mowing is carried out to reduce competition (density), while selective thinning is applied to select the most promising individuals. Thus, this study aimed to compare methods of conducting the natural regeneration of Pinus elliottii based on forest biometric variables: tree density ( ), basal area ( ), injuries to the remaining trees ( ) and production cost. For this, 19 circular plots of 380 m² were allocated in an experimental area of manual mowing with 22.5 ha and 6 plots in a mechanized mowing area with 7.2 ha. The Mann-Whitney test for independent samples was used to verify the existence of statistical difference between the discrete variables N and I , while the test t of Student de two samples, assuming different variances, were applied to the continuous variable G, both at the level of 5% significance. With of 2,012 trees/ha and of 4.07 m²/ha, mechanized mowing was more effective in controlling regeneration. No statistical difference was found between the methods referring to I, while the production cost of manual mowing was 51.7% higher. Thus, it is concluded that the method with mechanized mowing is the most suitable for conducting the natural regeneration of Pinus elliottii.

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“…The forest investment projects have a higher cost in the first months of planting and revenues, in general, occur at the end of their useful life. Traditional methods of financial evaluation do not provide the necessary flexibility in the face of inherent uncertainties of the forest sector and can present an obstacle to new business [12].…”

Section: Introductionmentioning

confidence: 99%

Investments in Pinus elliottii Engelm. Plantations: Real Options Analysis in Discrete Time

Martins

Silva

Munis

et al. 2022

Forests

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Background: The commonly used methods for the financial evaluation of plantation forest investment projects do not incorporate uncertainties and ignore the value related to flexibility. The real options analysis makes it possible to capture these values in investment projects, increasing their value and return. Despite this, studies involving real options in forest investment projects are scarce, specifically those related to Pinus spp. Therefore, this study aimed to: (a) analyze whether the real options analysis adds value to investment projects of Pinus elliottii Engelm. plantations; and (b) make the real options analysis more accessible to forest managers and potentially increase its use in the investment projects of Pinus spp. plantations. Methods: We evaluated two investment projects in P. elliottii plantations in southern Brazil, which differed in the way of obtaining the land for planting: with lease or purchase of land on a planning horizon of 21 years. In the real options analysis, we used deferral, expansion, and abandonment. Results: Individually, the deferral, expansion, and abandonment options add value to investment projects in Pinus elliottii plantations. The option to expand the forested area is one that adds the most value to the investment project with land lease. In the investment project with land purchase, it is abandonment. Conclusions: Investment projects in Pinus elliotti plantations that contemplate the land purchase analyzed through the real options analysis present higher financial returns than those that consider land lease, inverting the result provided by the traditional analysis.

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RENTABILIDADE ECONÔMICA DA PRODUÇÃO DE Pinus SPP. POR MESORREGIÃO HOMOGÊNEA NO ESTADO DO PARANÁ

Cited by 3 publications

References 2 publications

Economic analysis and revenue optimization in management regimes of Pinus taeda

Economic analysis and revenue optimization in management regimes of Pinus taeda

REDUCTION NATURAL REGENERATION DENSITY OF Pinus elliottii BY MANUAL AND MECHANIZED MOWING

Investments in Pinus elliottii Engelm. Plantations: Real Options Analysis in Discrete Time

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