| With the intensification of industrial competition,industrial upgrading has become a common problem faced by traditional industries.Increasing knowledge input and promoting knowledge spillover are important ways for traditional industries to realize industrial upgrading and value chain upgrading.In theory,knowledge spillover is regarded as an important source of increasing the scale of regional economic growth.It also has a certain shaping power for the formation and evolution of industrial space.However,due to the potential and invisibility of knowledge spillover,the spatial effect of knowledge spillover is not completely clear.The research on the impact of knowledge spillover on industrial clusters is of great practical and theoretical significance.This paper takes Foshan ceramic industry cluster as the research object,analyzes the current situation and spatial evolution characteristics of Foshan ceramic industry cluster by using the spatial hot spot identification technology;based on the enterprise patent data,reveals the innovation characteristics and the evolution characteristics of innovation network structure of Foshan ceramic industry by using the social network analysis method;tests the industry cluster space by using the Spearman rank correlation coefficient According to the relationship between the inter structure and the spatial structure of knowledge innovation,according to the interest source of the industrial cluster,the paper constructs model variables,uses the geographical detector to identify the influencing factors of the changes of the industrial cluster,and makes a theoretical analysis of the influencing mechanism of the knowledge spillover factors on the industrial cluster.The conclusion is as follows:(1)Foshan ceramic enterprises have formed a large scale advantage in the process of development and accumulation.In recent years,the growth of small and mediumsized enterprises is the main trend,and the sub sectors are dominated by wholesale and retail industry and ceramic product service industry.The headquarters economic system of Foshan ceramic enterprise has become a scale,and its production capacity has been transferred to other ceramic production areas.(2)The ceramic industry in Foshan shows the trend of spatial agglomeration,which tends to be concentrated in Chancheng District of the central city.On the time scale,"single center agglomeration" gradually forms the mode of "center periphery agglomeration growth".However,the inner city agglomeration speed is faster than the peripheral area,and the central City area is still the area where the ceramic industry in Foshan develops intensively,and the subdivisional industries are all centripetal Aggregation characteristics,large enterprises tend to be peripheral distribution.Foshan ceramic industry cluster concentrated area and non-concentrated area show a cohesive pattern,but the internal space in the old and new degree,industry combination,scale combination still has the characteristics of internal space differentiation.(3)In terms of knowledge network of Foshan ceramic industry cluster,although the number of innovation subjects is small and most of them are enterprises,the innovation output obtained is optimistic.Foshan ceramic industry cluster mainly forms the core subject of network with big brand enterprises as its main body,the network density is not high,and most of the knowledge spillover modes of innovation nodes are in a separate state,and they are mainly located in Foshan intensive area.Innovation cooperation network is mainly composed of enterprises and universities.The network relationship is becoming more and more complex,but it is relatively sparse.There is considerable development space in the innovation cooperation network.From the perspective of space,there is a multi-directional trend in the relationship between innovation subjects,mainly in the state of dense areas to non-dense areas and external cities.On the local scale,Foshan ceramic industry innovation cooperation network has path dependence,but it still has path creation in the evolution process.On the cross city scale,there is a certain geographical distance attenuation law in the space of cooperation and Innovation exchange.(4)The lighthouse effect of stock,large enterprises as innovation center nodes and knowledge spillover between sub categories of ceramic industry have a significant impact on the spatial agglomeration of Foshan ceramic industry cluster as a whole,and the influence of interaction of different factors is higher than that of individual effect,and the local knowledge has a greater impact on the level of spatial agglomeration in the areas of intensive and non-intensive Stock and knowledge spillover caused by large enterprises as lighthouse effect.The experience knowledge gained in the enterprise production of Foshan ceramic industry cluster,as the "learning by doing" and the innovation knowledge obtained through the investment of R & D funds,enters into the knowledge stock pool of the cluster,increasing the potential benefit scale of knowledge;at the same time,the large enterprise in the center of Foshan ceramic knowledge innovation network is an important source of knowledge innovation,and the way of Patent Cooperation The knowledge pool of Foshan ceramic industry cluster is integrated with a large number of knowledge capital from outside the city and the whole country.In order to reduce the cost of innovation,enterprises are proved to be effective by neighboring large enterprises or neighboring regional units with patent distribution.The government should pay attention to the positive effect of knowledge spillover and better control the layout of industrial space. |
