运用福建、江西、浙江、安徽、湖南、辽宁、山东、云南8省的实地调研数据,对集体林权制度改革对森林面积和森林蓄积量的影响进行研究,在描述性统计的基础上,采用“双重差分模型”(DID)分析了林改对森林资源变化的净影响。实证分析结果表明,林权制度改革对于森林面积和森林蓄积的增加并不显著,长期效益远没有显现出来。 Based on the field survey data of Fujian, Jiangxi, Zhejiang, Anhui, Hunan, Liaoning, Shandong and Yunnan provinces, the impact of the reform of collective forest rights system on forest area and forest stock volume was studied. On the basis of descriptive statistics, Double Difference Model (DID) analyzes the net effect of forest change on forest resource change. The results of empirical analysis show that the reform of forest tenure right system is not significant for the increase of forest area and forest volume, and the long-term benefits are far from being apparent.