哥伦比亚安蒂奥基亚地区潜在带松人工林的财务分析

Q3 Agricultural and Biological Sciences Revista Facultad Nacional de Agronomia Medellin Pub Date : 2020-05-01 DOI:10.15446/rfnam.v73n2.82833
L. Ramírez, S. Orrego, Héctor I. Restrepo
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引用次数: 2

摘要

建立商业人工林需要选择能够获得合理利润的地点。为确定最适合在哥伦比亚安蒂奥基亚中部地区建立新的松林的地区,进行了财务分析。分析是假设在基地进行基本的造林处理,但在整个轮作期间不进行管理。利用生物物理变量和林分密度作为预测因子,利用先前拟合的模型获得了林分水平的体积产量数据。估算的林分量、详细的现金流和衍生的立木价格被结合起来进行财务分析。本文计算了最优轮作年龄下的土地期望值(LEV)和内部收益率(IRR)及其空间变异。结果表明,估算的树桩数量和当前的树桩价格不足以保证新林地投资的合理收益。LEV为负,IRR为4.1±1.5%,低于财务分析中使用的6.8%的贴现率。然而,如果森林生产力由于造林实践或成本降低的相似比例而增加20%(获得高达8.4%的内部收益率),则可以实现正的LEV和8%的内部收益率。此外,如果政府提供补贴,在高增长潜力(年均增量大于16立方米/公顷-1年)和靠近工厂(半径小于45公里)的地点,内部收益率将增加10.3%(不需要提高生产率或降低成本)。
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Financial analysis of potential Pinus patula plantations in Antioquia, Colombia
The establishment of commercial forest plantations requires the selection of sites where reasonable profitability can be attained. A financial analysis was made for the identification of the most suitable areas for the establishment of new Pinus patula plantations in the central region of Antioquia, Colombia. The analysis was performed assuming basic silvicultural treatments at the establishment but no management during the entire rotation period. A volume yield data at the stand level was obtained from a previously fitted model that uses biophysical variables and stand density as predictors. The estimated stand volume, a detailed cash flow, and a derived stumpage price were combined to perform a financial analysis. The Land Expectation Value (LEV) and Internal Rate of Return (IRR) at the optimal rotation age, along with their spatial variation, were calculated in this study. Results suggest that the estimated volume and the current stumpage price are not sufficient to guarantee reasonable profitability for new timberland investments. While the LEV was negative, the IRR was in the range 4.1±1.5%, which is less than the discount rate of 6.8% used in the financial analysis. However, a positive LEV and an IRR at 8% would be achieved if forest productivity increases by 20% because of silvicultural practices or costs reduction in a similar proportion (obtaining IRRs up to 8.4%). Moreover, if the government provide subsidies, the IRR would increase up to 10.3% (without requiring an increase in productivity or a decrease in costs) on sites with high growth potential (mean annual increment greater than 16 m3 ha-1 year-1), and close to the mills (less than 45 km radii).
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来源期刊
Revista Facultad Nacional de Agronomia Medellin
Revista Facultad Nacional de Agronomia Medellin Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
1.30
自引率
0.00%
发文量
34
审稿时长
16 weeks
期刊介绍: La Revista Facultad Nacional de Agronomía Medellín (RFNA), de la Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias Agrarias, es una publicación científica editada desde el año 1939, en formato impreso y digital y de acceso abierto desde la web —sin costo para autores y lectores—. Está orientada a investigadores que crean conocimiento disciplinar y multidisciplinar que articula la ciencia y la tecnología para hacer más productivo el campo a nivel empresarial y de economía campesina. La Revista tiene como objetivo divulgar resultados de investigación mediante artículos originales, inéditos y arbitrados (peer review) de carácter científico que respondan a preguntas específicas y que proporcionen sustento y pruebas a una hipótesis, en aspectos relacionados con las Ciencias Agronómicas, Producción animal, Ciencias Forestales, Ingeniería Agrícola, de Alimentos y otras afines que contribuyan a la solución de los limitantes del agro a nivel nacional, regional e internacional. La Revista recibe y publica, sin ningún costo, artículos en idioma inglés de investigación, revisión, reseñas y cartas al editor. Desde el 2017 la periodicidad de publicación es cuatrimestral, se publican tres números al año con circulación nacional e internacional, en los siguientes períodos: Enero - Abril Mayo - Agosto Septiembre - Diciembre This journal does not charge APCs or submission charges.
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