基于空间距离效应的青岛市浒苔治理支付意愿研究

支付意愿的空间属性是影响环境物品估值效度的主要因素之一，忽略对空间距离的考量可能导致最终资源环境物品或服务的货币估值产生偏差。文章以青岛市海域浒苔灾害为研究对象，使用条件价值评估法，构建支付意愿函数模型，测算受访者距青岛市海边的距离，探索浒苔治理支付意愿是否存在距离衰减现象；通过划分不同的距离区，测算不同距离区内公众浒苔治理支付意愿，最终汇总得出浒苔治理带来的经济价值。研究结果显示：公众浒苔治理支付意愿“距离衰减”效应明显，距离海边较近的公众倾向于为治理浒苔支付较高的金额；青岛市浒苔治理总经济价值为9.84亿元/a；不考虑距离衰减效应最终导致浒苔治理经济价值的高估达27.03%。研究结论可为空间尺度上的非市场价值评估提供新的研究思路和科学参考，不仅提高了条件价值评估法估值结果的有效性，也提供了更加精准的青岛市浒苔治理经济价值估值。

A Study on Willingness to Pay for the Management of Enteromorpha prolifera in Qingdao Based on Spatial Distance Effect

The spatial attribute of willingness to pay is one of the main factors affecting the valuation validity of environmental goods, and ignoring the consideration of spatial distance may lead to bias in the monetary valuation of the resource environmental goods or services. This paper takes the Enteromorpha prolifera in Qingdao sea area as the research object, uses the contingent valuation method, constructs the willingness-to-pay function model, measures the distance of respondents from Qingdao city seashore, and explores whether there is a distance decay phenomenon in the willingness to pay for Enteromorpha prolifera management; this paper measures the public willingness to pay for Enteromorpha prolifera management in different distance zones by dividing them into different distance zones, and aggregates them to obtain the total economic value of Enteromorpha prolifera management. The results show that: the willingness to pay for the management of Enteromorpha prolifera is obviously distance decay, and the public closer to the seashore tends to pay higher; the total economic value of Enteromorpha prolifera management in Qingdao is 984 million yuan/year; disregarding thedistance decay effect will eventually lead to an overestimation of the economic value of Enteromorpha prolifera management by up to 27.03%. The findings of the study can provide new research ideas and scientific references for non-market value assessment at the spatial scale, which not only improves the validity of the valuation results of the contingent valuation method, but also provides a more accurate economic value of Enteromorpha prolifera management in Qingdao.