Q4 Agricultural and Biological Sciences
Paavo Kaimre, Vivika Kängsepp
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引用次数: 0

摘要

摘要本文概述了爱沙尼亚使用防护林系统的经验及其经济评估的方法方面。通过对红杜鹃属立地类型松树(Pinus sylvestris L.)林分管理方案的计算,对该方法进行了验证。根据爱沙尼亚森林管理规则和以前造林研究的结果,为不同类型的防护林采伐制定了管理模式。预测林分发育时采用差异模型,计算时采用不同木材品种的实际价格和管理活动的实际成本。现金流量的净现值被用作一个标准,它允许比较不同长度的管理期间。计算了三个不同的周期:一个再生砍伐周期,两个再生砍伐周期和永久管理周期。将不同类型防护林系统的结果与完全采伐情景的结果进行了比较。计算表明,在短期内,不同类型的防护林采伐和完全砍伐的净现值是相当相似的。第一个更新采伐周期的结果受人工林和幼林的栽培和抚育成本的影响最大。从长远来看,完全砍伐将比采伐防护林有优势,因为林分的更新周期更短。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Turberaied ja nende ökonoomiline hindamine pohla kasvukohatüübi männiku näitel
Abstract The article provides an overview of the experience of using shelterwood systems in Estonia and the methodological aspects of their economic assessment. The methodology is tested with calculations made on the management alternatives of pine (Pinus sylvestris L.) stand in Rhodococcum site type. Based on the Estonian forest management rules and the results of previous silvicultural studies, the management models were elaborated for different types of shelterwood harvesting. The difference model was used when predicting stand development, the actual prices of different wood assortments and the actual cost of management activities were used in calculations. The net present value of cash flows is used as a criterion, which allows comparing management periods of different lengths. Calculations were performed for three different periods: one regeneration felling cycle, two regeneration felling cycles and perpetual management cycles. The results of different types of shelterwood systems are compared with the results of clear-cutting scenarios. The calculations indicate that in the short term, the net present value of the different types of shelterwood harvesting and clear-cutting are quite similar. The results of the first cycle of regeneration felling are most affected by the costs of cultivation and tending of a plantation and young forest. In the long run, clear-cutting will have an advantage over shelterwood harvesting, as the stand regeneration period is shorter.
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来源期刊
Forestry Studies
Forestry Studies Agricultural and Biological Sciences-Forestry
CiteScore
0.70
自引率
0.00%
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0
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