RELATED, UNRELATED VARIETY AND REGIONAL INNOVATION OUTPUT: A CASE STUDY OF YANGTZE RIVER DELTA
GAO Min-yu1,2, ZENG Gang1,2,3, WANG Feng-long1,3,4
1. The Center for Modern Chinese City Studies, East China Normal University, Shanghai 200062, China;
2. School of Urban and Regional Science, East China Normal University, Shanghai 200241, China;
3. Institute of Urban Development, East China Normal University, Shanghai 200062, China;
4. School of Geography, South China Normal University, Guangzhou 510631, China
Abstract：Based on previous studies in economic geography, this paper investigates the effects of related and unrelated variety on regional innovation outputs of 26 cities in the Yangtze River Delta, China. The data is mainly from city-level patent application data from 2011 to 2016 collected from SIPO (Chinese State Intellectual Property Office). Related and unrelated variety are measured by entropy index which is first proposed by Frenken et al. in 2007. The effects of related and unrelated variety on regional innovation performance are estimated with spatial Durbin model. The results indicate that: 1) The related variety pattern of the Yangtze river delta city cluster is similar to that of the unrelated variety pattern. 2) Related variety has significantly positive effect on innovation output, suggesting that related variety can facilitate knowledge production and spillover; 3) We find a spatial effect that related variety of adjacent cities has a marginally negative impact on local innovation performance.
高旻昱, 曾刚, 王丰龙. 相关多样化、非相关多样化与区域创新产出——以长三角地区为例[J]. 人文地理, 2020, 35(5): 103-110.
GAO Min-yu, ZENG Gang, WANG Feng-long. RELATED, UNRELATED VARIETY AND REGIONAL INNOVATION OUTPUT: A CASE STUDY OF YANGTZE RIVER DELTA. HUMAN GEOGRAPHY, 2020, 35(5): 103-110.
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