Meta-Analysis dataset

Over the years, researchers from around the world have evaluated the Willingness to Pay ‎‎(WTP) for the reduction of beach litter using non-market valuation approaches. This research ‎study summarises the economic value of beach clean-ups and the underlying causes of WTP ‎variation observed in various primary studies. Using a meta-regression analysis, this study ‎estimates the global effect size of WTP and evaluates the causes of WTP heterogeneity across ‎regions. The uploaded data file contains a description of the variables used in the meta-‎analysis and the respective codes.‎多年来，全球各地的研究者均采用非市场估值法，对减少海滩垃圾的支付意愿（Willingness to Pay, WTP）开展了评估。本研究梳理了海滩清洁行动的经济价值，以及各项原始研究中观测到的支付意愿差异的潜在成因。本研究采用元回归分析方法，估算了支付意愿的全球效应量，并剖析了不同区域间支付意愿异质性的成因。本次上传的数据文件包含本研究元分析所使用的变量说明及其对应编码。