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Cost-benefit analysis of restoring an ephemeral desert stream after an ecological accident

机译:生态事故后恢复短暂沙漠流的成本效益分析

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This paper presents a methodology for examining the net benefit of site rehabilitation after an ecological disaster. While restoration of the site seems reasonable on the face of it, the cost of proactive restoration can be very high. In this article, we present a tool for decision makers to decide on the optimal route to rehabilitation – proactive or natural rehabilitation (or some combination thereof). We present a case study of an ecological catastrophe that occurred in June 2017 at an ephemeral desert stream in the south of Israel. We estimated the restoration costs and the benefits of restoration over the relevant time frame using a contingent valuation method. Comparing the present costs and benefits revealed a net present value of ILS 355.5 million in favor of proactive restoration of the stream. We also demonstrate that not all sections of the stream pass the benefit cost test, so a higher net benefit could be achieved through partial restoration. Our study demonstrates the importance of cost–benefit analysis when policy makers are contemplating proactive versus natural restoration.
机译:本文介绍了在生态灾难后检查现场康复的净利润的方法。虽然该网站的恢复似乎是合理的,但积极恢复的成本可能非常高。在本文中,我们为决策者提出了一种决定康复的最佳路线的工具 - 主动或自然康复(或其某种组合)。我们在以色列南部的一条暂时的沙漠溪流中提出了一个生态灾难的案例研究。我们估计了使用或有估值方法估计恢复成本和恢复的恢复益处。比较目前的成本和福利揭示了ILS 355.5百万的净目前,有利于积极恢复流。我们还证明并非所有部分的所有部分都通过了福利成本测试,因此通过部分修复可以实现更高的净利效。我们的研究表明,当政策制定者正在考虑积极活跃的与自然恢复时,才能展示成本效益分析的重要性。

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