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| Knowledge Spillover Effect of Regional Innovation System Based on Digestive Absorption Threshold |
| SU Yi，LIN Zhouzhou |
| 1. Harbin Engineering University, Harbin, China; 2. Zhejiang University, Hangzhou, China |
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Abstract From the perspective of value chain, this studydivides the process of regional innovation into two stages,technology R&D and economic transformation. Then it constructs panel threshold regression models of two stages by using the panel data of 30 regions in China during 2009~2016, taking the regional digestive absorption level as the threshold variable, and empirically analyzes knowledge spillover effects of the two-stage regional innovation activities. The results show that knowledge spillover effect in technology R&D stage has a significantly double threshold characteristic. With the increase of digestive absorption level threshold, the depression effect of knowledge spillover on regional innovation output of the technology R&D stage gradually decreases. The knowledge spillover effect in economic transformation stage has a significantly double threshold characteristic. With the increase of digestive absorption level threshold, the promotion effect of knowledge spillover on regional innovation output of the economic transformation stage first rises and then descends. R&D expenditure intensity, R&D manpower, regional innovation institutions, the cost of new product development and the degree of openness have significantly positive impacts on regional innovation output.
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Received: 13 May 2019
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