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集体林权制度改革对农户收入的影响——基于倾向得分匹配法(PSM)的实证分析
仇晓璐, 陈绍志, 赵荣
中国林业科学研究院 林业科技信息研究所, 北京 100091
摘要:
为评价贫困地区新一轮集体林权制度改革的效果,本研究基于2014年贵州省集中连片特困地区独山县的农户调查数据,采用倾向得分匹配法(PSM)实证分析了集体林权制度改革对农户人均收入和人均林业纯收入的影响。结果表明:在利用倾向得分匹配法(PSM)消除混杂因素及样本选择偏差和管理选择问题等的影响后,集体林权制度改革对农户人均收入的效应为0.45%左右,但影响不显著,而对农户人均林业纯收入的效应为2.76倍左右,具有稳健的显著正向影响。与倾向得分匹配法相比,传统的描述性统计分析高估了集体林权制度改革对农户人均林业纯收入的影响,大致高估了5倍左右。建议进一步深化贫困地区的集体林权制度改革,激励农户充分利用林地资源,促进林业收入可持续增长。
关键词:  集体林权制度改革  倾向得分匹配法  农户收入  效应评估
DOI:10.11841/j.issn.1007-4333.2018.12.24
分类号:
基金项目:国家林业局委托项目
Effects of collective forest tenure reform on farmers' income: An empirical analysis based on propensity score matching method
QIU Xiaolu, CHEN Shaozhi, ZHAO Rong
Research Institute of Forestry Policy and Information, Chinese Academy of Forestry, Beijing 100091, China
Abstract:
In order to evaluate the effect of the new round of collective forest tenure reform in poor areas, a survey data on rural households' livelihoods in Dushan County, a concentrated destitute area in Guizhou Province in 2014 is taken as study object. Statistical analysis on the effects of collective forest tenure reform on farmers' income per capita and farmers' forestry net income per capita is conducted by adopting propensity score matching method. The results show that:After eliminating the influence of confounding factors and sample selection bias and management choice problem by propensity score matching, the effect of collective forest tenure reform on farmers' income per capita is about 0.45% indicating that the effect of collective forest tenure reform on farmers' income is not significant. However, its effect on farmers' forestry net income per capita is about 2.76, which means that collective forest tenure reform had positive and robust effect on farmers' forestry income. Furthermore, compared with propensity score matching method, the conventional descriptive statistical methods overestimated the impact of collective forest tenure reform on farmers forestry net income per capita, roughly overestimated by 5. The following policy suggestions are put forwarded:Deepening further collective forest tenure reform in poor areas, encouraging farmers to make full use of timberland resource, and promoting the sustainable growth of farmers' forestry income.
Key words:  collective forest tenure reform  propensity score matching method  farmers' income  effects assessment
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