Abstract:

The generalization of the Pan Yangtze River Delta has become inevitable because of economy development and problems facing in the Yangtze River Delta. Researching evolution of economy space structure the Pan Yangtze River Delta can help us appreciate and grasp its trends of space evolution, and to provide the basic data for regional integration of the Pan Yangtze River Delta. The author analyzed evolution process of the Pan Yangtze River Delta depending on Diffusion Theory and constructing Diffusion Effect Model of Field Logarithmic. The research showed that the primary urban effective regions are distributed along the Yangtze River Delta and Hangzhou Bay. They evolve from shapes of sparse pots, “S”, pipi shrimp, to that of bream. Areas of extremely strong field regions, stronger field regions and ordinary field regions were found to decrease, while areas of weaker field regions and the weakest field regions were found to increase. According to evolution laws and mechanism of spatial structure of economy, accessibility, urban field in the Pan Yangtze River Delta, especially spatial structure urban field, on the principle of establishing development axis in accordance with city nodes, establishing planes in accordance with axis, we conducted spatial integration for city nodes, industrial development axis and industrial development metropolitan in the Pan Yangtze River Delta and built first grade industrial development axis as a hairbrush compositing of the development axis along the Yangtze River, coastal zone, huninghe, huhangqu. Under first grade industrial development axis of hairbrush, we set Nanjing, Hangzhou, Hefei, Suzhou, Ningbo as diffusion sources and built the second grade development axis. And field strength in the Pan Yangtze River Delta was classed as core area, adjoining area, outer area and based on it urban economic region in the Pan Yangtze River Delta was classed as kernel metropolitan, adjoining metropolitan, outer metropolitan.