基于微观调查数据,采用基尼系数分解方法,对重点国有林区职工家庭收入差距及其变化进行了实证分析。研究结果表明:天保工程实施以后,林区职工收入提高的同时,职工家庭间的基尼系数持续降低。在所有的收入来源中,工资收入和退休金收入对基尼系数做出了主要的贡献。从收入差距的来源变化来看,结构效应和收入集中效应都起到了降低重点国有林区职工家庭间收入不均等的作用,但是,后者对基尼系数的下降贡献更大。工资收入的结构效应和收入集中效应都起到了降低收入不均等的作用,而退休金收入只有收入集中效应降低了收入不均等。需要注意的是,政府转移收入没有起到降低收入不均等的作用,反而促进了收入不均等的扩大。
This article utilizes the approach of the Gini coefficient decomposition to empirically analyze the gaps and their variance of the staff households ' incomes in the key state-owned forest districts, based on the survey data. The result demonstrates that after the rollout of Natural Forest Protect Project, the Gini index between the households continues to decrease, associating with the improvement of staff' s income. In the whole sources of income, wage in- come and retirement pension makes the major components. In terms of the change of the income gaps, both struc- tural effect and income concentration effect play a role in relieving the inequality, but the latter affects more. These two effects can be found in the wage income contribution to relieving the inequality while only income concentra- tion effect is shown in the retirement pension' s performance. What should be interpreted with caution is that trans- fer income from government promotes the expansion of income inequality instead of reducing it.