دانلود رایگان مقاله برتری زیست محیطی، نوآوری های زیست محیطی و رهبری تکنولوژیکی در مناطق تمدن زیست محیطی امروزی چین

abstract

In this study we propose a global metafrontier Luenberger productivity indicator (GMLPI) to investigate the effect of the establishment of the Poyang Lake Eco-economic Zone (PLEEZ), one of China's typical ecological civilization zones, on regional environmental total-factor productivity growth. We combine the global environmental technology, metafrontier approach, and the non-radial Luenberger productivity indicator and incorporate the regional heterogeneities into the environmental productivity growth analysis. This GMLPI includes the efficiency change, technological change, and metafrontier technology gap change indices. An empirical study of the PLEEZ has been conducted using the county level data covering a period from 2009 to 2013. Empirical results show that the environmental productivity growth has increased by 8.71% on average, with growth primarily driven by technological change. These results suggest that the establishment of the PLEEZ is effective in encouraging eco-innovation; however the PLEEZ lacks an eco-leadership effect. Significant heterogeneities in environmental productivity growth and its patterns among three major functional zones in the PLEEZ remain.

4. Conclusion

This study investigated the effect of the establishment of the PLEEZ on regional environmental total-factor productivity growth using county level data for the period 2009–2013. By considering regional heterogeneity and the non-radial Luenberger productivity indicator, we presented the global metafrontier Luenberger productivity indicator (GMLPI) for measuring environmental productivity growth and its decompositions including eco-catching-up and eco-innovation. Results show that environmental productivity growth has increased by 8.71%, primarily driven by eco-technological change, implying that the establishment of the PLEEZ is effective in encouraging eco-innovation in the PLEEZE. However, the PLEEZ lacks eco-leadership effects because the metafrontier gap has not been reduced. The results also show that there are significant heterogeneities among the three major types of functional zones in the PLEEZ in environmental productivity growth and its patterns. The KDZ areas showed the highest environmental productivity growth and technological leadership change.