摘要
基于全国8省调研,研究中国生猪养殖粪污处理现状,运用开放条件下的经济剩余模型测算分析粪污处理对社会经济福利的影响,同时从效率与公平两方面对不同情景下的粪污处理情况加以评价。结果表明,2014年以来环保政策逐步趋严,生猪养殖粪污处理得到养殖场(户)普遍重视,且规模越大处理能力越强;粪污处理将造成猪肉价格上升,产量下降,生产者、消费者剩余均减少,但因环境污染得以缓解,负外部性大幅下降,社会经济福利最终增加;中规模养殖场(户)占比提升及增加猪肉贸易量均能提升粪污处理效率,但效率越高,由此引起的经济剩余重新分配越缺乏公平性。因此,若以粪污处理效率最大化为政策目标,应适当扩大猪肉进口量;若兼顾效率与公平,则应重点支持中规模养殖场(户)发展。
Based on the investigation of eight provinces in China,this paper analyzes the current situation of pig manure treatment in China,and use the economic surplus model under open conditions to calculate the impact of manure treatment on social and economic welfare.The treatment effect on different scenarios were evaluated from two aspects of efficiency and fairness.The main conclusions were as the following:Since 2014,the environmental protection policy had gradually become stricter,so pig manure treatment had been paid more attention by farms(households),and the larger the scale is,the stronger the treatment capacity is.Through the treatment the price of pork will increase,the output will decrease,the surplus of producers and consumers will decrease,the negative externality also decreasd.Finally,because of the environmental pollution being alleviated,the social and economic welflare increased.Increasing the scale level and trade quantity can improve the efficiency of manure treatment,but the higher the efficiency is,the less fair the redistribution of economic surplus was.The research shows if the policy goal is to maximize the efficiency of manure treatment,the import of pork should be appropriately expanded.If both efficiency and fairness are considered,the development of medium-sized farms(households)should be focused on.
作者
李鹏程
王明利
王淑彬
LI Pengcheng;WANG Mingli;WANG Shubin(Institute of Agricultural Economics and Development,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
出处
《农业经济与管理》
CSSCI
2020年第5期90-102,共13页
Agricultural Economics and Management
基金
“十三五”国家重点研发计划项目(2018YFD0501105)
中国农业科学院科技创新工程项目(ASTIP-IAED-2020-01)。
关键词
生猪养殖
粪污处理
经济福利效应
效率
公平
pig breeding
manure treatment
economic welfare effect
efficiency
equity
