云南省融入长江经济带的价值链关联特征研究
Research on the Characteristics of Value Chain Linkages between Yunnan Province and the Yangtze River Economic Belt’s Integration

本文基于2012、2015、2017年的中国省区间投入产出表，利用投入产出分析方法，从中间品关联、增加值关联、投入产出关联和增加值收益率四个方面，研究了云南省参与长江经济带价值链分工的特点和变化趋势。研究发现，云南省与长江经济带下游地区的价值链关联程度较高，与长江经济带中上游地区的价值链关联程度较低；云南省与长江经济带中上游地区的价值链关联程度在不断增强；云南省从产品供给方加入长江经济带价值链的深度和从生产要素的需求方加入长江经济带价值链的程度都有所弱化。本文基于产业价值链的视角比较得出了云南省在长江经济带中的地位与作用，进而从产业价值链的视角为云南省更好地融入长江经济带提供对应的政策建议。
Based on the input-output tables of Chinese provinces for the years 2012, 2015, and 2017, this study utilizes input-output analysis to examine the characteristics and trends of Yunnan Province's participation in the value chain division of the Yangtze River Economic Belt. The analysis focuses on four aspects: intermediate input linkages, value-added linkages, input-output linkages, and value-added profit rates. The study finds that Yunnan Province has a higher degree of value chain linkage with downstream areas of the Yangtze River Economic Belt, while the degree of linkage with upstream areas is lower. However, the linkage between Yunnan Province and upstream areas of the Yangtze River Economic Belt is gradually strengthening. The depth of Yunnan Province’s integration into the value chain of the Yangtze River Economic Belt from the perspective of product supply has weakened, as well as the degree of integration from the perspective of demand for production factors. Based on the perspective of the industrial value chain, this study determines the position and role of Yunnan Province in the Yangtze River Economic Belt and provides corresponding policy recommendations for Yunnan Province to better integrate into the Yangtze River Economic Belt.