Payment for multiple forest benefits alters the effect of tree disease on optimal forest rotation length.
Payment for multiple forest benefits alters the effect of tree disease on optimal forest rotation length.
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DOI：
10.1016/j.ecolecon.2017.01.008
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发表时间：
2017-04
期刊：
影响因子：
--
通讯作者：
Hanley N
中科院分区：
文献类型：
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作者：
Macpherson MF;Kleczkowski A;Healey JR;Hanley N
森林给它们的所有者和更广泛的社会带来了多种好处。然而，一波森林害虫和病原体正在全球范围内威胁着这一点。在这篇文章中，我们考察了疾病对单龄单轮伐林的最优轮伐期的影响，其中包括向私人森林所有者提供非木材收益的报酬，以部分内化森林经营的社会价值。利用一个可推广的生物经济学框架，我们说明了这种报酬如何通过增加最优轮伐期长度来抵消疾病的负面经济影响，并且在某些限制条件下，甚至使永远不采伐森林的情况成为最优。分析表明，各种因素之间存在一系列复杂的相互作用，其中包括传染病的传播率和疾病对木材采伐价值和非木材收益的影响。一个关键的结果是，疾病对最佳轮作长度的影响取决于疾病是否只影响木材效益，而不是同时影响木材和非木材效益。我们的框架可以扩展到包括森林提供的多种生态系统服务以及疾病如何影响其生产的细节，从而促进广泛的应用。提出了一种具有病害的多产出林的生物经济模型。对于一系列关键参数，找到了最优旋转长度。支付非木材福利可以抵消疾病的负面影响。如果取决于疾病的程度，那么支付的结构是至关重要的。
Forests deliver multiple benefits both to their owners and to wider society. However, a wave of forest pests and pathogens is threatening this worldwide. In this paper we examine the effect of disease on the optimal rotation length of a single-aged, single rotation forest when a payment for non-timber benefits, which is offered to private forest owners to partly internalise the social values of forest management, is included. Using a generalisable bioeconomic framework we show how this payment counteracts the negative economic effect of disease by increasing the optimal rotation length, and under some restrictive conditions, even makes it optimal to never harvest the forest. The analysis shows a range of complex interactions between factors including the rate of spread of infection and the impact of disease on the value of harvested timber and non-timber benefits. A key result is that the effect of disease on the optimal rotation length is dependent on whether the disease affects the timber benefit only compared to when it affects both timber and non-timber benefits. Our framework can be extended to incorporate multiple ecosystem services delivered by forests and details of how disease can affect their production, thus facilitating a wide range of applications. A bioeconomic model of a multiple output forest with disease is proposed. The optimal rotation length is found for a range of key parameters. A payment for non-timber benefits counteracts the negative effect of disease. Structure of the payment, if it is dependent on the level of disease, is critical.