关键词: 城乡二元经济结构 , 因素分解 , 资本劳动比差距 , 劳动参与率差距

Abstract: This paper extended LewisFeiRanis model and pointed out that urbanrural gap derived from three transformations: labor and population, output and income, labor and output. The dual economic structure could be decomposed into four gaps: incomeoutput ratio, outputcapital ratio, capitallabor ratio and labor participation rate. Based on this method, the paper found that the gap of incomeoutput ratio, outputcapital ratio, capitallabor ratio and labor participation rate accounted for -6876%, -1373%, 16435% and 1814% of Chinas dual structure in 1981—2009, while the average labor productivity contribution was 15062%. Labor productivity (especially capitallabor ratio) and labor participation rate gap were the main factors of Chinas dual structure transformation, which derived from the transfer of rural labor along with the rural capital formation and rural population migration were slow. Some suggestions were given from above conclusions.

Key words: urban-rural dual structure , factor decomposition , capital-labor ratio gap , labor participation rate gap