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首页> 外文期刊>Mathematical and Computational Forestry & Natural-Resource Sciences >A Management Model for Persian Oak -- A Model for Management of Mixed Coppice Stands of Semiarid Forests of Persian Oak
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A Management Model for Persian Oak -- A Model for Management of Mixed Coppice Stands of Semiarid Forests of Persian Oak

机译：波斯栎的经营模式-波斯栎半干旱森林混交林林分经营模式。

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摘要

This study aims to present a diameter class model to predict the effects of different forest management practices on growth and yield conditions of the mixed coppice stands of Persian oak ( Quercus persica ) in the semiarid forests in southern Zagros, Iran. Using inventory data in 2003, the model was applied to make management recommendations for a forested watershed. Some requested data for the model were extracted from available information on an adjacent forested area. The model was analyzed under a set of different management strategies considering uneven-aged forest management. Linear programming was used to solve the problems. The model yields results of importance for policy development. For instance, the present prohibition of harvests could be counterproductive as some 10--20 times more volume can be extracted when harvests are allowed. In addition, the effect of improved protection of natural regeneration from grazing seems only to be justified if it is combined with harvesting trees. These conclusions should however be considered with great caution as the calculated model parameters hinge on a number of critical assumptions. Sensitivity analyses with the model could show what parameters are critical and therefore motivate research with permanent field trials. MCFNS 2(1):20-29.
机译：这项研究旨在提出一个直径分类模型，以预测不同森林管理实践对伊朗扎格罗斯南部半干旱森林中的波斯栎（栎栎）混合小灌木林生长和产量条件的影响。利用2003年的库存数据，该模型被用于为森林流域提出管理建议。从邻近林区的可用信息中提取了一些模型所需的数据。该模型是在考虑了不均衡年龄森林管理的一系列不同管理策略下进行分析的。使用线性编程来解决这些问题。该模型得出的结果对于政策制定很重要。例如，目前的禁止收成可能适得其反，因为在允许收成的情况下，可提取的体积大约是10--20倍。另外，只有结合采伐树木，才能更好地保护自然再生免受放牧。但是，由于计算得出的模型参数取决于许多关键假设，因此应非常谨慎地考虑这些结论。使用该模型进行的敏感性分析可以表明哪些参数至关重要，因此可以通过永久性的田间试验激励研究。 MCFNS 2（1）：20-29。

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