Replication data for: Households’ Willingness to Pay for Improved Watershed Services of the Layawan Watershed in Oroquieta City, Philippines

Watersheds provide numerous ecosystem services to downstream communities often with no cost to them. Although these services are valuable to humans, they do not have monetary values attached to them, making their total economic value quite ambiguous. This ambiguity results in the non-optimal use o
f the natural resources that leads to the degradation of the watersheds. One approach that could address this issue is payments for ecological services (PES). The main objective of this study was to estimate the willingness-to-pay for improved watershed services by domestic water users within the Layawan Watershed in Oroquieta City. It employed the contingent valuation method to assess the willingness to pay of water users. More than 50% of the respondents voted positively to the referendum question which is whether they are willing to pay a certain amount for the conservation of the Layawan Watershed or not. The computed mean willingness to pay amounts were Php 57.48 and Php 53.89 per month per household for the parametric and non-parametric estimations, respectively. These amounts translate to 0.68% of the average monthly household income of the sample respondents, which is approximately Php 8 198.84. The amounts computed may serve as bases for a water user fee that may be collected from the domestic water users in the Layawan Watershed as buyers of the watershed services.

流域（Watershed）可为下游社区提供诸多生态系统服务，且通常无需下游社区承担任何成本。尽管此类服务对人类具有显著价值，但未被赋予货币化估值，导致其总经济价值相当模糊。这种价值模糊性引发了自然资源的非优化利用，进而造成流域退化。针对这一问题的可行解决方案之一为生态系统服务付费（Payments for Ecological Services, PES）。本研究的核心目标为，估算奥罗基塔市（Oroquieta City）莱亚万流域（Layawan Watershed）内家庭用水户对改善流域服务的支付意愿（Willingness-to-pay）。研究采用条件价值评估法（Contingent Valuation Method）对用水户的支付意愿进行评估。超50%的受访者对“是否愿意为莱亚万流域保护支付一定费用”的公投问题作出了肯定答复。参数估计与非参数估计得到的平均支付意愿分别为每户每月57.48菲律宾比索（Php）与53.89菲律宾比索（Php）。该金额约占样本受访者家庭月均收入的0.68%，而样本家庭月均收入约为8198.84菲律宾比索（Php）。本次测算出的支付意愿金额，可作为向莱亚万流域内作为流域服务购买方的家庭用水户征收用水费的参考依据。