| 张倩,苏培煌,周奕韦,孙洪武.稻田面源污染防控技术生态补偿政策设计——基于长三角地区选择实验及偏好机制分析[J].农业环境科学学报,2025,44(8):2075-2085. |
| 稻田面源污染防控技术生态补偿政策设计——基于长三角地区选择实验及偏好机制分析 |
| Design of ecological compensation policy for non-point source pollution control technologies in paddy fields： based on choice experiments and preference mechanism analysis in the Yangtze River Delta region |
| 投稿时间：2025-04-16 |
| DOI：10.11654/jaes.2025-0360 |
| 中文关键词: 稻田面源污染防控技术 生态补偿 选择实验 偏好机制 长三角地区 |
| 英文关键词: non-point source pollution control technologies in paddy fields ecological compensation choice experiments preference mechanism the Yangtze River Delta region |
| 基金项目:国家重点研发计划项目（2021YFD1700800） |
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| 中文摘要: |
| 本文针对稻田面源污染防控技术缺乏推广机制、主体应用意愿低的现实问题，面向江、浙、皖17个行政村、130个水稻生产主体，分别开展了农田智慧排水装置、炭基有机肥生态补偿政策选择实验与偏好机制分析。结果表明：地方财政应针对炭基有机肥实行价格补贴，对经营规模0.667 hm2及以下主体最宜补贴标准为300~460 元·t-1，0.667 hm2以上主体则应补贴300~420 元·t-1；政策方案选择取决于差异化补贴标准下主体对不同有机肥替代量产生的边际产量与边际成本（肥料、施肥）预期，具有明显的规模异质性；当补贴标准达到不同阈值时，其对主体有机肥替代率的影响效应存在断点式跃迁或下跌的门槛特征。在不征收农田尾水排污费情景下，建议将智慧排水装置纳入高标准农田建设内容，补助资金在现有基础上提高2 100~3 750 元·h m-2；在加征排污费情景下，建议将智慧排水装置纳入农机购置补贴名录，补贴标准宜为每台1 140~2 010 元。研究表明，针对不同类型技术、主体进行差异化补偿工具选择与标准厘定，方可有效发挥生态补偿政策激励效应。 |
| 英文摘要: |
| Confronting the practical challenges of lacking popularization mechanism in controlling non-point source pollution in paddy fields and the low adoption willingness among stakeholders. Through choice experiments and preference mechanism analysis, we examined ecological compensation policy for smart drainage devices and carbon-based organic fertilizers respectively, covering 130 rice producers across 17 administrative villages in Jiangsu, Zhejiang, and Anhui Provinces. We conduct policy design research with the following findings： local finance should implement price subsidies for carbon-based organic fertilizer, and the most suitable subsidy standard for entities with a business scale of 0.667 hm2 and below is 300-460 yuan·t-1, and 300-420 yuan·t-1 for subjects above 0.667 hm2; The choice of policy scheme depends on the marginal yield and marginal cost（fertilizer and fertilization）of different organic fertilizer substitution under the differentiated subsidy standard, which has obvious scale heterogeneity. When the subsidy standard reaches different thresholds, its impact on the substitution rate of organic fertilizer has the threshold characteristics of breakpoint jump or decline. Under the scenario of not levying farmland tailwater sewage charges, it is suggested that smart drainage devices should be included in the construction of highstandard farmland, and the subsidy funds should be increased by 2 100-3 750 yuan · h m-2 on the existing basis. Under the scenario of additional sewage charges, it is suggested that smart drainage devices should be included in the list of agricultural machinery purchase subsidies, and the subsidy standard should be 1 140-2 010 yuan per unit. This study demonstrates that the selection of differentiated compensation tools and the determination of standards for different types of technologies and subjects are necessary to effectively exert the incentive effect of ecological compensation policy. |
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