中国西部地区林业生产技术效率的测算和动态演进分析

Research on Calculation and Dynamic Evolution of Forestry Production Technical Efficiency in Western China

运用三阶段DEA模型对中国西部地区11个省区2003—2011年的林业生产技术效率进行测算,并利用核密度估计方法对林业生产技术效率的变动趋势进行分析。研究表明:西部地区林业生产技术效率较低,平均值只有0.664;9年间林业生产纯技术效率始终高于林业生产规模效率,较低的规模效率是导致西部地区林业生产技术效率较低的主要原因;2003—2011年期间,西部地区各省区的林业生产技术效率呈现两极分化的趋势。实现西部地区林业生产的规模化发展是提高林业生产技术效率和缩短地区之间效率差距的关键所在。

In this study, the three--stage DEA model was used to calculate the forestry production technical efficiency of 11 provinces in western China from 2003 to 2011. Kernel density estimation was used to analyze the changing tendency as well. The results showed that the average of forestry production technical efficiency was only 0. 664. The lower scale efficiency was the main reason for the lower forestry production technical for the account of the fact that the forestry production pure technical efficiency was always higher than the forestry production scale efficiency during the nine years. Furthermore, the trend of forestry production technical efficiency of all the provinces in western China polarized towards two equilibrium point from 2003 to 2011. Realizing the scale development of forestry production in western China is the main measure that could improve the forestry production technical efficiency and reduce the efficiency gap among all regions.