中文摘要：

基于平滑转换回归（STR）模型研究了湖北省城乡收入差距、劳动力质量对经济增长的非线性影响效应.结果表明：湖北省城乡收入差距、劳动力质量与经济增长之间确实存在明显的非线性特征,以滞后两阶的城乡收入差距作为转换变量建立LSTR2模型最为恰当.研究发现：当城乡收入差距处于低机制状态时,城乡收入差距的扩大会促进经济增长;但当城乡收入差距处于高机制状态时,城乡收入差距的扩大会抑制经济增长;而劳动力质量的提高始终对经济增长起促进作用.

英文摘要：

The paper studied the Nonlinear Effect Relationship between the urban-rural income gap, the labor quality and the economic growth in Hubei province based on STR model. The result showed that an obvious nonlinear characteristics existed between them, and it is the most appropriate method to use the time-delay urban-rural income gap as smooth transition variable to build LSTR2 model. The study found that the expansion of the urbanrural income gap will promote economic growth when it is in the state of low regime; and the economic growth will be inhibited when the urban-rural income gap is in a high regime. The improvement of labor quality is always been promoting effect to the economic growth.