摘要 : The goal of this paper is twofold. First, a new approach to measuring production-source sectoral eco-efficiency in generalized input-output models is presented. The procedure may be used as a supplementary method to the traditiona... 展开 The goal of this paper is twofold. First, a new approach to measuring production-source sectoral eco-efficiency in generalized input-output models is presented. The procedure may be used as a supplementary method to the traditional framework that is usually based on various decomposition techniques. Due to its simplicity and low data requirements, the approach provides a useful and flexible tool that allows a more general insight to be obtained into levels of emissions associated with production, which in turn is essential for constructing more sound indicators of eco-efficiency. Second, in order to trace the factors driving the dynamics of the proposed indicators of eco-efficiency, a two-step procedure based on combination of multiplicative structural decomposition analysis and a new variant of sensitivity analysis based on mathematical programing is outlined. In order to illustrate the potential applications of the new approach, an empirical analysis based on national input-output tables and environmental accounts for Poland is conducted. The empirical results provide solid evidence to claim that the sector Electricity, Gas and Water Supply plays a dominant role in shaping the structure of backward and forward linkages of all sectors of the Polish economy in the CO2-emmision-oriented generalized IO models. As a consequence, lowering the emission-output ratio in this particular sector has a particularly strong impact on improving production-source eco-efficiency of all sectors operating in Polish economy. (c) 2020 Elsevier Ltd. All rights reserved. 收起