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Optimal harvest scheduling in Eucalyptus plantations A case study in Galicia (Spain)

机译：桉树人工林的最佳采伐计划-以加利西亚（西班牙）为例

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摘要

This paper focuses on strategic management planning of Eucalyptus globulus Labill. plantations in Galicia (northwestern Spain). Several problems associated with the management of these plantations were identified first. Current management plans for plantations of this species consist of the systematic and somewhat arbitrary application of the area control method. Thus, these plans do not take into consideration the optimum length for one full plantation cycle that maximizes the land expectation value, neither do they formulate the area control method through any mathematical programming model for scheduling regeneration harvests. In this paper, we present a modelling approach based on linear and goal programming. The models consider area and volume control regulation strategies, and take into account variations in land productivity among site classes and successive rotation intervals. To illustrate this approach, we applied the models to a neighbourhood community-owned forest currently managed by the Regional Forest Service with a recent management plan. The results showed that the models provided more flexible harvest schedules, and the profitability of eucalypt stands was 64% higher than that under the current management plan. Finally, extensions to this study were identified.
机译：本文着重于桉树Labill的战略管理规划。加利西亚（西班牙西北部）的人工林。首先确定了与这些人工林管理相关的几个问题。目前该物种人工林的管理计划包括对面积控制方法的系统性应用和某种程度的随意性应用。因此，这些计划没有考虑到使土地期望值最大化的一个完整人工林周期的最佳长度，也没有通过任何用于安排再生收成的数学编程模型来制定面积控制方法。在本文中，我们提出了一种基于线性规划和目标规划的建模方法。这些模型考虑了面积和体积控制调节策略，并考虑了场地类别和连续轮换间隔之间土地生产力的变化。为了说明这种方法，我们将模型应用于当前由区域森林服务局管理并具有近期管理计划的社区社区拥有的森林。结果表明，该模型提供了更灵活的收获时间表，桉树林的利润率比当前管理计划高出64％。最后，确定了这项研究的扩展。

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