Asmare Erkie, Bekele Ketema, Fentaw Saleamlak
Agricultural and Applied Economics, Amhara Regional Agricultural Research Institute, Ethiopia.
School of Agricultural Economics and Agribusiness, Haramaya University, Ethiopia.
Heliyon. 2022 Jan 21;8(1):e08813. doi: 10.1016/j.heliyon.2022.e08813. eCollection 2022 Jan.
Gudera wetland is accredited as a home for innumerable goods and services that have economic value for individuals living around and outside them. However, due to the absence of rehabilitation intervention, the wetland is at the edge of collapse at this time. This paper aims to: (1) estimate households' mean willingness to pay (WTP) for the rehabilitation of the wetland, (2) investigate determinants that affect the probability and intensity of WTP, and (3) estimate aggregated welfare gains from the intervention. To address these objectives, data from 237 household heads were collected using a two-stage random sampling procedure. For the analysis, econometric models, such as bivariate probit and double hurdle, were employed to estimate the mean WTP and determinants of WTP, respectively. The result demonstrates that the mean WTP value from the double bounded dichotomous choice ranges from 70.44 to 80.64 Ethiopian Birr per year per household. Likewise, the aggregated welfare gain expected from the rehabilitation intervention ranges from 2,464,977 ($85,589) to 2,821,916 ($97,983) Ethiopian Birr per year. The double hurdle model result revealed that participation in natural resource conservation, frequency of extension contact and trust in budget allocation have a positive and significant effect on households' WTP. Whereas, factors, such as land size around the wetland, distance to the wetland and credit utilization have a negative influence on households' WTP. These findings suggest that most of the sampled households are willing to contribute for the rehabilitation intervention and this could have implications for the success of future implementation.
古德拉湿地被公认为是众多具有经济价值的商品和服务的产地，这些商品和服务对生活在湿地周边及以外地区的个人具有经济价值。然而，由于缺乏恢复性干预措施，这片湿地目前正处于崩溃边缘。本文旨在：（1）估计家庭对湿地恢复的平均支付意愿（WTP）；（2）调查影响支付意愿概率和强度的决定因素；（3）估计干预措施带来的总福利收益。为实现这些目标，采用两阶段随机抽样程序收集了237位户主的数据。在分析过程中，分别运用双变量概率模型和双重障碍模型等计量经济学模型来估计平均支付意愿和支付意愿的决定因素。结果表明，双重有界二分选择法得出的平均支付意愿值为每户每年70.44至80.64埃塞俄比亚比尔。同样，恢复性干预措施预期带来的总福利收益为每年2,464,977（85,589美元）至2,821,916（97,983美元）埃塞俄比亚比尔。双重障碍模型的结果显示，参与自然资源保护、推广接触频率以及对预算分配的信任对家庭的支付意愿有积极且显著的影响。而湿地周边土地面积、到湿地的距离以及信贷使用等因素则对家庭的支付意愿有负面影响。这些研究结果表明，大多数抽样家庭愿意为恢复性干预措施做出贡献，这可能对未来实施的成功产生影响。
