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The effects of uncertain forest conservation benefits on long-run deforestation in the Brazilian Amazon

机译:不确定的森林保护效益对巴西亚马逊地区长期森林砍伐的影响

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摘要

Deforestation results from the trade-off between benefits from forest conservation and economic profits associated with land development. However, as net gains are often uncertain, irreversible land development may later be regretted. To better inform conservation policies, we use a real options framework to model irreversible forest conversion under uncertain conservation benefits and determine the associated optimal long-run average rate of deforestation. We then analyze the impact of the demand for agricultural products on the rate of deforestation in the Brazilian Amazon. In a scenario analysis for the nine states of the Brazilian Amazon, we calculate: (i) the expected time for exhaustion of the current forest stock; and (ii) the potential forest coverage for the next 20, 100 and 200 years. Our results suggest that if forest benefits grow over time at a sufficiently high speed, they may significantly slow down deforestation. In contrast, the higher their volatility, the faster deforestation proceeds.
机译:森林砍伐是森林保护收益与土地开发相关经济收益之间的权衡取舍。但是,由于净收益通常是不确定的,不可逆转的土地开发以后可能会后悔。为了更好地告知保护政策,我们使用了实物期权框架来模拟在保护利益不确定的情况下不可逆转的森林转化,并确定相关的最佳长期平均毁林率。然后,我们分析了农产品需求对巴西亚马逊地区森林砍伐率的影响。在对巴西亚马逊九个州的情景分析中,我们计算:(i)耗尽当前森林资源的预期时间; (ii)未来20年,100年和200年的潜在森林覆盖率。我们的结果表明,如果森林效益随着时间的推移以足够高的速度增长,那么它们可能会大大减缓森林砍伐。相反,它们的挥发性越高,森林砍伐就越快。

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