Testing Benefits Transfer of Forest Recreation Values over a Twenty-Year Time Horizon
基于52个森林的汽车游憩数据，用混合Logit模型检验20年间总支付意愿的效益转移，发现偏好随时间显著变化，更新模型可将误差平均降低282%，但最佳模型仍有25%误差。
<i>We conduct a functional benefit transfer over 20 years of total willingness to pay based on carborne forest recreation in 52 forests, using a mixed logit specification of a random utility model and geographic information systems to allow heterogeneous preferences across the population and for heterogeneity over space. Results show that preferences for some forest attributes, such as species diversity and age, as well as transport mode have changed significantly over the period. Updating the transfer model with present total demand for recreation improves the error margins by an average of 282%. Average errors of the best transfer model remain 25%.</i>