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Convergence analysis of eco-efficiency of China’s cement manufacturers through unit root test of panel data

Xingle Long, Mei Sun, Faxin Cheng and Jijian Zhang

Energy, 2017, vol. 134, issue C, 709-717

Abstract: China has become the largest producer and consumer of cement worldwide. In 2011, carbon emissions of China’s cement industries accounted for 60.6% of cement carbon emissions worldwide. In this context, this paper mainly investigates whether eco-efficiency of China’s cement manufacturers has converging tendency or not. First, we evaluated eco-efficiency under directional distance function (DDF) and the directional slack-based measure (DSBM) to compare their biases. Furthermore, we also implement unit root test of panel data to testify convergence analysis upon eco-efficiency in different regions of China in order to overcoming the demerit of conventional convergence approach, which might have invalid inferences. Our empirical analysis revealed that eco-efficiency under DDF has gaps with that under DSBM due to excess input or output shortages. Eco-efficiency in the east, middle and west converged. It is necessary to substitute raw material, increase additive and improve waste use for China’s cement manufacturers.

Keywords: Cement manufacture; Eco-efficiency; Convergence; Unit root (search for similar items in EconPapers)
Date: 2017
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