The economic valuation of goods that do not have a market, like services offered by natural parks, provide a lot of information for the purpose of policy making on the conservation and protection of the natural environment, as well as for establishing park use strategies for potential park visitors. In this respect, this paper aims to analyse visitor preferences for Cornalvo Natural Park, which has been classed, since 1992, as a Site of Community Importance. To do this, we conducted an analysis adopting the choice experiment methodology to determine visitor preferences for a set of attributes. Additionally, we included a visitor preference heterogeneity analysis based on a mixed logit model in order to calculate individual willingness to pay with respect to a set of previously specified attributes. Finally, we also implemented the latent class methodology to define groups of individuals with similar characteristics. The information was gathered from visitor surveys conducted during 2019. The main results show that tourists had a high preference and willingness to pay for higher biodiversity levels and lower numbers of visitors, whereas the other attributes were less relevant. Additionally, we detected some degree of heterogeneity in willingness to pay by sex, age and income. Finally, Latent class analysis identified two visitor classes, determined primarily by age and income.

中文翻译：

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生物多样性是评估自然公园的相关属性吗？来自西班牙Cornalvo自然公园的证据

没有市场的商品的经济价值评估，例如自然公园提供的服务，可为保护自然环境的政策制定以及建立潜在的公园使用策略提供大量信息公园的游客。在这方面，本文旨在分析Cornalvo自然公园的游客偏好，该公园自1992年以来已被列为社区重要场所。为此，我们采用选择实验方法进行了分析，以确定一组属性的访问者偏好。此外，我们还包括了基于混合logit模型的访问者偏好异质性分析，以计算针对一组先前指定的属性的个人支付意愿。最后，我们还实施了潜在类方法来定义具有相似特征的个人群体。这些信息是从2019年进行的游客调查中收集的。主要结果表明，游客对于较高的生物多样性水平和较少的游客人数具有较高的偏好和意愿，而其他属性则不太相关。此外，我们发现按性别，年龄和收入划分的支付意愿存在一定程度的异质性。最后，潜在类别分析确定了两个访问者类别，这两个类别主要由年龄和收入决定。主要结果表明，游客对较高的生物多样性水平和较少的游客数量有较高的偏好和意愿，而其他属性则不太相关。此外，我们发现按性别，年龄和收入划分的支付意愿存在一定程度的异质性。最后，潜在类别分析确定了两个访问者类别，这两个类别主要由年龄和收入决定。主要结果表明，游客对较高的生物多样性水平和较少的游客数量有较高的偏好和意愿，而其他属性则不太相关。此外，我们发现按性别，年龄和收入划分的支付意愿存在一定程度的异质性。最后，潜在类别分析确定了两个访问者类别，这两个类别主要由年龄和收入决定。