Abstract:

The 3D framework(Density， Distance and Division)，which comes from the 2009 annual report of the World Bank，is introduced in this paper to explain the development of Wuhan City Region in China.We focus on the relation between 3D and productivity disparities in nonprimary sector，and establishes a set of indicators to reflect the three dimensions of density,distance and division and to comprehensively test the importance of 3D.This paper then employs the OLS model to empirically analyze Wuhan City Region.The result presents that the density has a significant role in determining these disparities.A role for distance is less significant and the role for division is insignificant.The results show that it is more important to increase density and shorten distance than to integrate the resources in the Wuhan City Region.These results have important policy implications both for the Wuhan City Region itself and others，which also provide a new vision to evaluate urban agglomeration in China.〖HJ1〗