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Economics of camel control in central Australia

机译：澳大利亚中部骆驼控制的经济学

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A cost-effectiveness analysis based on a bioeconomic model was carried out with regard to specific feral camel control strategies in central Australia. Two different aerial control strategies were modelled for the period 2009-20. Strategy 1 involved annual removals, whereas strategy 2 involved periodic removals only when a specific feral camel density was reached. The direct benefits to the pastoral industry of feral camel control were also modelled in terms of reduced grazing competition together with infrastructure damage. A single environmental service related to reducing greenhouse gas emissions was further considered. Although the present costs of control under the two strategies are considerable ($4.10-4.95million over 12 years at a 5% discount rate), they are far outweighed by the present benefits to the livestock industry from reduced competition ($46.3million), as well as to society as a whole through reduced greenhouse gas emissions ($32.1million). Including reduced infrastructure damage, the net present value of control is $75.2million under strategy 1 and $73.3million under strategy 2 (over 12 years at a 5% discount rate), suggesting that a control strategy based on annual removals should be preferred over a strategy of periodic removals. Given the large positive net present value of control and the robustness of the overall findings, there would appear to be a strong argument for considering the implementation of a full-scale, long-term feral camel control programme in the near future.
机译：在澳大利亚中部，针对特定的野生骆驼控制策略，进行了基于生物经济模型的成本效益分析。为2009-20年建模了两种不同的空中控制策略。策略1涉及每年的清除，而策略2仅当达到特定的野生骆驼密度时才进行定期清除。还通过减少放牧竞争和基础设施的破坏来模拟对野生骆驼控制对畜牧业的直接好处。还考虑了与减少温室气体排放有关的单一环境服务。尽管目前这两种策略下的控制成本相当可观（在12年内以5％的贴现率计算为410万至495万美元），但远远不及竞争减少所带来的当前畜牧业收益（4630万美元）减少温室气体排放（3210万美元）对整个社会的影响。包括减少的基础设施损害在内，策略1下控制的净现值为7,520万美元，策略2下为7,330万美元（以5％的折现率在12年内），这表明基于年度清除量的控制策略应优先于策略定期清除。鉴于控制的正净现值很大，以及总体研究结果的可靠性，似乎有很强的理由考虑在不久的将来实施全面的，长期的野生骆驼控制计划。

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