供给侧改革下中国PPP模式供给效率的DEA检验

DEA Test for PPP Supply Efficiency of China Under Supply-Side Structural Reform

政府与社会资本合作（PPP）模式的供给效率备受关注。本文基于四阶段DEA方法，估计2005-2013年间我国省际公共服务PPP供给效率水平。研究表明：在控制外生环境变量影响后，2005-2013年间我国公共服务PPP模式供给效率均值较低且差异较大，波动范围为0．371～0．705，东部地区技术效率明显好于中西部地区，且规模报酬递增的省份数量大幅增加。因此，政府应完善相关法规制度，重视投入引导与支持，强化利率市场化改革，提供良好的外部环境，促进中西部地区积累PPP项目开发经验，增强累积投资效应，同时切实提高政府能力，提升公私合作效率。

PPP supply efficiency has received much concern. Based on four-stage DEA,this study evaluates public service PPP supply efficiency of China＇s provinces from 2005 to 2013 form. The research shows that public service PPP supply efficien- cy average value from 2005 to 2013 is low and quite different after controlling the impact from exogenous environment factors and fluctuation range is 0. 371 ~ 0. 705. Adjusted eastern technical efficiency is much higher than midwestern technical efficien- cy and the number of province with increase returns to scale has increased greatly. Therefore, government can perfect relevant laws and regulations, pay attention to investment guidance and support, strengthen interest rate marketization reform,supply good external environment, gather PPP project exploitation experience of midwest area, enhance cumulative investment effect, and im- prove government ability, steadily promote PPP efficiency.