Study Of City Green Space System Scale Hierarchy Based On Fractal Theory

These years, although the research results of Chinese scholars on urban space system are enormous, there are still many defects which are mainly laid on its lag to the construction of green land, week schematics, and inadequate work of the scale grade of green space system. Currently, the key point is illuminate how to build an equitable and effective green space system. Urban green space system is characterized by the complexity in terms of space. Fractal Theory can be widely used to analyses and solve these problems.Firstly, the research builds an integrative theory about scale Grade Distribution, fractal dimension value, non-scale interval and proof choosing, based on reviewing the domestic and foreign studies.Putting the rank scale distribution characteristics and the fractal dimension as measurement of the feature of green space system, we analyzed the correlation between them by comparing with conventional indicators. Secondly, the study chooses nine city districts in six cities as typical cases. Through comparative analysis of the case, we found that the distribution of green scale grade and fractal dimension can reflect the merits of the Green Space System. The study also found the fractal dimension reflects the green space system layout, size, number, and other integrated features, while the size distribution of the hierarchy reflects the characteristics of the relationship between the amount of green space green space system-level scale. In addition, we found there is a strong positive correlation between fractal dimension and the related indicators of economic, social and ecological systems, while the correlation about zipf fitting degree is weak. Finally, based on the findings, we put some suggestions to improve the construction of green land.