| Industrial agglomeration and economic growth are two important economic phenomenons. The rapid economic growth in the eastern coastal areas of China is derived from the manufacturing industrial agglomeration since the reform and opening up. Along with the gradually deepened research on the mechanism of industrial agglomeration and on the changing trend of industrial agglomeration, accelerating technological innovation and promoting industrial upgrading become the core task of industrial agglomeration self enhancement. The reconstruction of industry space layout and the coordinated development of regions are the focus of the sustained economic growth. However, previous studies emphasize the importance of pecuniary externalities to the industrial agglomeration more than the importance of technological externalities. In this paper, used the normative and empirical methods to construct theoretical model, and to analysis the internal mechanism among industrial agglomeration, technology spillover and economic growth;Used the spatial econometrics method to analysis technology spillover effect of regional industrial agglomeration and its effect on regional spatial convergence; Used the clustering analysis method to analysis the heterogeneity and nonlinear characteristics of the technology spillover effect of manufacturing industry agglomeration; Used the 53 national high-tech zones as research objects to examine the impact of technological gap on technological progress of non-high-tech zones and on regional economic growth. This paper tries to figure out empirical evidence that promote industrial upgrading through technological progress and promote regional coordinated development through technological catch-up.This paper includes five aspects:First, in theoretical study, find the common inner core between The New Economic Geography Theory and The New Economic Growth Theory. Learn from Ottaviano&Martin (2001), construct a theoretical model to analysis the internal mechanism among industrial agglomeration, technology spillover and economic growth. Discuss the meaning of economic geography based on the spacial solow model, and put forward a econometric model to measure technology spillover effect of industrial agglomeration. Second, study the technology spillover effect of regional industrial agglomeration. Investigate the spatial dependence of industrial agglomeration and technology spillover on the regional level, study their stage feature and nonlinear feature, and observe their geographical distribution through Moran scatter diagram. Empirically test the technology spillover effect of industrial agglomeration under space-related conditions using spatial econometric methods. Analysis the characteristics of the regional space ? convergence. Measure and compare the regional space ? convergence rate of the nation and the four regions. Inspect the threshold effects of industrial agglomeration and of R&D intensity under spatial dependence. Study the nonlinear effect of technology spillover under different threshold conditions. Third, inspect technology spillover effect of manufacturing industrial agglomeration. Analysis the changing trend of manufacturing industrial agglomeration and its technology spillover effect. Divide the manufacturing industries into high tech industries and traditional industries according to the R&D level of each industry in order to study the industry heterogeneity of the technology spillover effect. Analysis the nonlinear characteristics of industries agglomeration technology spillover effect both in high tech industries and in traditional under the threshold of R&D input intensity, and to distinguish the influence factors under different channels. Fourth, inspect the technology spillover effect of high-tech zone industrial agglomeration. Analysis the development path and current situation of national high-tech zones in China. Study the influence of the technology gap between high-tech zone and non-high-tech zone on the technology spillover effect. Investigate the technology spillover effect on technological progress for non-high-tech zones and for regional economic growth. Fifth, Put forward suggestions including improve the behavior of economic agents, narrow the regional gap of industrial agglomeration technology spillover effect, coordinate the industrial differences of industrial agglomeration technology spillover effect and enhance the level of high-tech zone technology spillover.The main conclusions as follows:First, the theoretical analysis shows that the impact of industrial agglomeration on economic growth has nonlinear characteristics, and there is a positive relationship between the two. The cross effects of industrial agglomeration and technology spillover affect the long-term growth of economy, and the conclusion is still valid in the consideration of spatial factors. Second, regional industrial agglomeration and technology spillover show spatial dependence characteristics, which affects regional spatial convergence. Moran's I test showed that there are spatial dependences of industrial agglomeration and of technology spillover. Spatial econometric results show that the spatial correlation of industrial agglomeration and R&D input intensity is conducive to the promotion of technology spillovers and regional spatial convergence. The regional spatial ? convergence rate is Central>Eastern>Western>National>Northeast. The main reason that the convergence rate is the lowest in Northeast is that the industrial agglomeration spatial dependence and R&D investment intensity spatial dependence are not significant. Third, there is industrial heterogeneity characteristic of industrial agglomeration technology spillover effect. The linear analysis on technology spillover effect of manufacturing industrial agglomeration shows high-tech industries cluster has more obvious technology spillover effect compared with traditional industries. Moreover, the non-linear analysis also shows that to promote the technology spillover significantly, the high tech industry agglomeration required a higher R&D input intensity threshold. Forth, there isn't an evidence support that technology spillover effect of high-tech zone industrial agglomeration could promote the technological progress of non-high-tech zones or could dirve the development of the regions, that is because the technology gap is far too large. Narrow technology gap between 21.63% and 40.86% would not only be conducive to technology spillover but also be conducive to promote regional economic growth. Fifth, the technology spillover of industrial agglomeration has a nonlinear effect. From a regional perspective, Industrial agglomeration presence triple threshold while R&D investment intensity presence dual threshold. It is not conducive to technology spillover when spatial dependence of agglomeration is too low or too high. Industrial agglomeration would significantly promote the technology spillover only when R&D investment intensity spatial dependence is exceed the second threshold value. From the industry perspective, the technology spillover effect of the manufacturing industrial agglomeration shows a decreasing marginal efficiency trend along with the increasing of R&D threshold. Industrial agglomeration promote technology spillover through enhancing technology efficiency when under low R&D level, and promote technology spillover through promoting technology progress when under high R&D level.The innovation includes three aspects:First, the spatial influence is broght into the analysis of regional industrial agglomeration technology spillover effect. The spatial econometric model effectively amended the OLS Estimation bias. Emphasize the spatial correlation and the regional connection are the key factors to promote technology spillovers of industrial agglomeration. A complete description of spatially dependent feature of industrial agglomeration and technology spillovers helps to accurately grasp the stage characteristics and nonlinear characteristics of regional industrial agglomeration and technology spillovers. Compared to existing studies for a simple linear relationship between industrial agglomeration and technology spillover, using spatial econometric model to test the technology spillover effect of industrial agglomeration and its effect on regional spatial convergence, and to research the nonlinear effects of industrial agglomeration technology spillovers under different threshold conditions, leads to a more deeply analysis of the key factors and its mechanism of the industrial agglomeration technology spillover. Second, systematically and comprehensively analyzed the industry heterogeneity characteristic and nonlinearity characteristic of the manufacturing industrial agglomeration technology spillover effect, which is rare in the existing research. Empirical test also supports this view that high-tech industrial agglomeration has more obvious technology spillover effect compared with traditional industries. The further research on the technology spillover of industrial agglomeration under the R&D threshold constraint not only proves the above point, but also shows the nonlinear effect of the technology spillover of the manufacturing industry. Along with the increase of R&D input intensity, the technology spillover of industrial agglomeration has a decreasing marginal effect trend, and the R&D threshold value of high tech industrial agglomeration technology spillover is far higher than the traditional industry. Third, make up for the shortage of existing researches that emphasis theoretical research but lack empirical test by put the technology spillover effect of high-tech zone and its contribution to regional economic growth into a unified analytical framework. Different from theoretical analysis conclusions that support high-tech zone as a regional growth pole could promote technology spillover and drive regional economic growth, this study found that there is a separatist development situation between non-tech Zone high-tech zones. High technology gap not only makes the technology spillover effect of the high-tech zones to the non high-tech zones insignificant, but also makes the promotion for regional economic growth useless. |
PDF Full Text Request