Co-agglomeration Measurement and Dynamic Evolution of Manufacturing Industry in Beijing-Tianjin-Hebei Region Based on DO Index
The statistical analysis methods of spatial data have also been introduced into economic literature after the new economic geography theory brought spatial elements into the research scope of mainstream economics.The agglomeration economy,with geographical proximity as its basic feature,has become an important research object and has gradually become the cross-research field of economic geography and GIS.The Ripley's K function belongs to the distance-based method in spatial point pattern analysis,also known as multi-distance spatial cluster analysis.The DO index develops on this basis.Compared with the K function,the DO index is more in line with the calculation standard of incomplete random distribution of enterprises in economics.In 2014,the coordinated development of the Beijing-Tianjin-Hebei region became a major national strategy.To verify the effectiveness of policy implementation,based on the economic census data of 2008 and 2018,we cleaned the data with the China Economic Census Yearbook as the reference standard.Then,we used the DO index to measure the characteristics and dynamic evolution process of manufacturing co-agglomeration before and after the coordinated development of the Beijing-Tianjin-Hebei region strategy was proposed.The results show that:(1)In 2008 and 2018,85.47%and 82.53%of manufacturing industry pairs respectively experienced co-agglomeration,with the average intensity changing from 0.030 to 0.029.The basic pattern of co-agglomeration remained stable over the past 10 years.However,the TOP 20 industry pairs with high co-agglomeration intensity value have shown the characteristics of obvious diffusion to Hebei Province.(2)The scale of co-agglomeration has expanded.In 2008,the significant scale of co-agglomeration for all industry pairs was 25-68 kilometers,while in 2018,it was within 55 kilometers and 75～103 kilometers.The average scale of co-agglomeration for the TOP 20 industry pairs increased from 80.91 kilometers to 125.15 kilometers.The critical value of the provincial and municipal boundaries is about 75 kilometers.After the proposal of the Beijing-Tianjin-Hebei coordinated development strategy,there has been more cooperation between manufacturing industries across provincial administrative boundaries,and this characteristic is more evident in the TOP 20 industry pairs.(3)The co-agglomeration between manufacturing industries exhibits a"polarization"characteristic.Industry pairs with high values of co-agglomeration intensity are higher,but those with medium intensity of co-agglomeration have become lower.The scale of the first local high value in 2018 was 54.5 km,smaller than 68 km in 2008,but the overall significant scale was larger than in 2008.This indicates that those with high values are higher and those with low values are lower,which to some extent verifies that there is a circular cumulative causal effect of co-agglomeration.The research results show that the coordinated development of industries in the Beijing-Tianjin-Hebei region has achieved initial success,and relieving Beijing of functions non-essential to its role as China's capital is an important driving force for the coordinated development of Beijing-Tianjin-Hebei industries at this stage.
multi-distance spatial cluster analysisDO indexBeijing-Tianjin-Hebei Regionmanufacturing in-dustryco-agglomerationenterprise data
万方数据
维普
