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首页> 外文期刊>Environmental & Resource Economics >What's in a name? The use of quantitative measures versus 'Iconised' species when valuing biodiversity
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What's in a name? The use of quantitative measures versus 'Iconised' species when valuing biodiversity

机译：名字叫什么？在评估生物多样性时使用定量措施而非“图标化”物种

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Valuing biodiversity is a key challenge to environmental economics, put into focus by policy developments everywhere, now increasingly focusing on habitat preservation. This paper addresses two questions as part of this challenge. Firstly, habitats as such - often in the form of particular landscapes - may be of value to people, i.e. independently of the value adhered to the species at risk in the particular habitat. Secondly, the question of how to present the biodiversity at risk to respondents is addressed. We design a choice experiment to investigate these questions in a setting where respondents are asked to evaluate the preservation of the Danish heath and its endangered species. Results indicate that the value of the habitat, the landscape itself, can be captured reasonably well in a specific attribute representing size of the habitat, and the parameter estimate of this attribute was little affected by changes in the biodiversity protection attribute. By simply naming and hence 'iconising' only a few species we received dramatically higher value estimates than when using a quantitative description. We conclude that using 'iconised' species for valuing biodiversity at habitat level may lead to very high, potentially overestimated, values of species preservation and we discuss which estimates to use in real-world conservation planning. The paper also contributes to the ongoing debate on embedding-issues, and the inclusion of a CV-question in the questionnaire allows an in-sample comparison with the choice experiment with regard to respondents' ability to respond to scale.
机译：重视生物多样性是对环境经济学的一个关键挑战，各地的政策制定都将重点放在了环境经济学上，现在越来越多地将重点放在栖息地保护上。本文提出了两个挑战，作为这一挑战的一部分。首先，通常以特定景观形式存在的栖息地可能对人们具有价值，即独立于特定栖息地中濒临灭绝物种的价值。第二，解决了如何向受访者介绍处于危险之中的生物多样性的问题。我们设计了一个选择实验，在要求受访者评估丹麦荒地及其濒危物种的保存情况下，对这些问题进行调查。结果表明，可以在代表栖息地大小的特定属性中合理地捕获栖息地的价值，即景观本身，并且该属性的参数估计几乎不受生物多样性保护属性变化的影响。通过简单地命名并因此仅使少数物种“图标化”，我们获得的价值估计要比使用定量描述时高得多。我们得出的结论是，使用“图标化”物种在栖息地一级评估生物多样性可能会导致很高的物种保护价值，甚至有可能被高估了，我们讨论了在现实世界的保护规划中应使用哪些估计。这篇论文也为正在进行的关于嵌入问题的辩论做出了贡献，并且在问卷中加入了CV问题，可以就选择者的答卷反应能力进行抽样比较。

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