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Scale Characteristics and Optimization of Park Green Space in Megacities Based on the Fractal Measurement Model: A Case Study of Beijing, Shanghai, Guangzhou, and Shenzhen

Author

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  • Zhen Li

    (Key Laboratory of New Technology for Construction of Cities in Mountain Area of Education Ministry, Faculty of Architecture and Urban Planning, Chongqing University, Chongqing 400045, China)

  • Wanmin Zhao

    (Key Laboratory of New Technology for Construction of Cities in Mountain Area of Education Ministry, Faculty of Architecture and Urban Planning, Chongqing University, Chongqing 400045, China)

  • Miaoyao Nie

    (Guangzhou Urban Planning & Design Survey Research Institute, Guangzhou 510060, China)

Abstract

This paper applies fractal theory to research of green space in megacity parks due to the lack of a sufficient qualitative description of the scale structure of park green space, a quantifiable evaluation system, and operable planning methods in traditional studies. Taking Beijing, Shanghai, Guangzhou, and Shenzhen as examples, GIS spatial analysis technology and the Zipf model are used to calculate the fractal dimension (q), the goodness of fit (R 2 ), and the degree of difference (C) to deeply interpret the connotation of indicators and conduct a comparative analysis between cities to reveal fractal characteristics and laws. The research results show that (1) the fractal dimension is related to the complexity of the park green space system; (2) the fractal dimension characterizes the hierarchical iteration of the park green space to a certain extent and reflects the internal order of the scale distribution; (3) the scale distribution of green space in megacity parks deviates from the ideal pyramid configuration; and (4) there are various factors affecting the scale structure of park green space, such as natural base conditions, urban spatial structure, and the continuation of historical genes working together. On this basis, a series of targeted optimization strategies are proposed.

Suggested Citation

  • Zhen Li & Wanmin Zhao & Miaoyao Nie, 2021. "Scale Characteristics and Optimization of Park Green Space in Megacities Based on the Fractal Measurement Model: A Case Study of Beijing, Shanghai, Guangzhou, and Shenzhen," Sustainability, MDPI, vol. 13(15), pages 1-18, July.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:15:p:8554-:d:605901
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    References listed on IDEAS

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    3. Lin, Jian & Wang, Zhou-Jing, 2019. "Multi-area economic dispatch using an improved stochastic fractal search algorithm," Energy, Elsevier, vol. 166(C), pages 47-58.
    4. Lincoln R Larson & Viniece Jennings & Scott A Cloutier, 2016. "Public Parks and Wellbeing in Urban Areas of the United States," PLOS ONE, Public Library of Science, vol. 11(4), pages 1-19, April.
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