从四川省退耕还林工程的实施情况出发,按实施年度的不同特点,提出了退耕还林工程的四阶段论,对工程带来的综合效益进行了延引性评价。在此基础上着重分析工程带给社区农户的经济、心理和行为上的影响。认为生态服务补偿、产权界定等政策难点将对退耕还林工程的持续性形成挑战。 Based on the implementation of the project of converting farmland into forestry in Sichuan Province, according to the different characteristics of the implementation year, a four-stage theory of the project of returning farmland to forestland was put forward, which extended the comprehensive benefit brought by the project. On this basis, we will focus on analyzing the economic, psychological and behavioral impacts brought by the project to community farmers. It is considered that the difficulties of policy such as compensation for ecological services and definition of property rights will pose challenges to the sustainability of the conversion of farmland to forestland.