Small-sized private livestock farms in the rural areas discharge quite a large volume of livestock wastes,contributing significantly to the agricultural non-point source pollution.As the farms are widely scattered in distribution,it is very hard and costly to exercise overall environmental supervision and pollution control.And what is more,so far no effective livestock waste treatment technologies or policies are available for extension.In recent years,a waste recycling pattern of pigsty-biogas digester-orchard has become an effective way to alleviate livestock waste pollution.However,this pattern depends mainly on government subsidies,which in turn leads to low efficiency of government financial funds.The publicprivate-partnership (PPP),as a new financing mechanism,has been developing the fastest in public services supply,and mainly applied to the construction of large-scale infrastructure,rather than such small projects as livestock waste treatment or transfer.In light of the above,this paper aims to explore whether or not PPP can be introduced into small-scale farms' livestock waste transfer projects.A case study was carried out of the PPP model demonstration in Pujiang County.Through cost-benefit analysis of the Pujiang case,economic feasibility of the PPP project of handling and treating livestock waste from small-sized livestock farms and environmental benefits it may create were discussed.Suggestions on improving the PPP system for small-scale projects are brought forth,in anticipation of initiating innovative thoughts for comprehensive utilization of livestock wastes from small scaled livestock farms.%近年来,猪-沼-果生产模式已经成为解决畜禽养殖污染的有效途径,但该生产模式完全依赖政府投入的融资方式可能带来政府财政资金的低效率,因此迫切需要在政府引导下探索新型融资模式.公共私营合作制(PPP)是当前公共服务供给方面增长最快的一种融资机制,主要应用于大型基础设施建设方面,没有在沼肥转运领域应用的先例.该研究根据蒲江县利用PPP模式的试点经验,通过对蒲江案例进行成本-效益分析,探讨沼肥转运PPP项目的经济可行性以及所产生的环境效益,并在此基础上提出制度改进建议,以期为农村畜禽养殖粪污综合治理提供新的思路.
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