中国农业绿色全要素生产率变化研究:1992-2010年

A Study on Agricultural Green TFP in China:1992-2010

基于随机前沿生产函数分析方法,本文将农业生产中的氮磷流失作为一种要素投入测算了中国农业1992-2010年的绿色全要素生产率(GTFP)变化指数,并与传统的全要素生产率(TFP)进行了比较分析。结果表明,全国层面来看,研究期内我国农业GTFP年均增长与TFP基本相同;分解分析表明,我国农业GTFP和TFP的增长均主要依靠技术进步推动,技术效率的降低抵消了部分技术进步的效果,纳入环境要素后技术效率的下降趋势和技术进步的增长趋势都有所放缓。分区域来看,东部地区GTFP年均增幅高于其TFP,中部地区二者基本相等,西部地区前者年均增幅低于后者。

Based on stochastic frontier analysis, with N/P emission variable included, the agricultural Green TFP in China during 1992 -2010 was measured and was compared with the traditional TFP. It was shown that,the average annual growth rate of agricultural GTFP was almost the same as that of TFP. The growth of agricultural GTFP and TFP were improved by technology progress and were delayed by the descent of technology efficiency. When N/P emission variable was included, the technology efficiency declined with a lower speed and the technology progress increased with a lower speed too. In eastern area,the average agricultural GTFP change index was higher than its TFP index,while in central area these two indices were almost equal and in western area the latter was higher.