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首页> 外文期刊>Environmental & Resource Economics >Nature Reserves as a Bioeconomic Management Tool:A Simplified Modelling Approach
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Nature Reserves as a Bioeconomic Management Tool:A Simplified Modelling Approach

机译：自然保护区作为生物经济管理工具：简化的建模方法

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摘要

This paper demonstrates analytically how a nature reserve may protect the total population, realize maximum sustainable yield (MSY) and economic yield (EY) and how this depends on biological growth, migration, reserve size and economic parameters. The pre-reserve population is assumed to follow the logistic growth law and two post-reserve growth models are discussed to explore the importance of model assumptions for assessment of reserves. The post-reserve growth has either a common carrying capacity as in the pre-reserve case, or each sub-population has its own carrying capacity proportionate to its distribution area. A combined model, as a continuum of the two models, is also formulated and briefly discussed. Population protection against extinction is assured against low cost harvesting, including zero cost, when relative reserve size is greater than relative migration. Reserve size may be tuned to realize MSY in one model, but not in the other. Economic yield is generally greater in the former, but maximum EY cannot be realized in any one.
机译：本文分析性地说明了自然保护区如何保护总人口，实现最大的可持续产量（MSY）和经济产量（EY），以及这如何取决于生物增长，迁移，保护区规模和经济参数。假定储备前人口遵循逻辑增长定律，并讨论了两种储备后增长模型，以探索模型假设对评估储备的重要性。保留后的增长与保留前的情况一样具有共同的承载能力，或者每个子种群都有与其分布区域成比例的自身承载能力。还制定并简要讨论了作为两个模型的连续体的组合模型。当相对储备规模大于相对迁徙规模时，可以确保避免灭绝，包括零成本，从而防止灭绝。可以调整储备量以在一种模型中实现MSY，而在另一种模型中不实现。前者的经济收益通常更高，但是任何一个人都无法实现最大的EY。

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