关键词: 投入产出, 产业关联效应, 加权测度, 后向关联, 前向关联

Abstract: Lots of measurement methods of industrial linkage were proposed based on Input-Output model. But the distinctions and connections among them have not obtained enough attention and thorough grasp of. In view of this, this paper discusses the connotation and limitation of unweighted industrial linkage measure, and demonstrates the weighted methods by economic analysis. It summarizes simple and weighted methods as the marginal measure and absolute measure, and focuses on the similarities and differences of economic connotation among them. It shows that backward linkage should be measured from demand-pull perspective by the Leontief model and that forward linkage should be measured from supply-driven perspective by the Ghosh model. Our empirical evidence shows that different methods have their own economic meaning and analytical value, but relatively speaking the absolute impact measurement method is more objective and credible in portraying the actual degree.

Key words: Input-Output, Industrial linkage, Weighted measurement, Backward linkage, Forward linkage