陕北黄土高原沟壑区城镇开敞空间分形秩序研究

RESEARCH ON OPEN SPACE OF CITIES AT GULLY AREA IN THE LOESS PLATEAU OF NORTHERN SHAANXI FROM THE PERSPECTIVE OF FRACTAL ORDER

分形理论作为研究复杂系统自相似规律的前沿理论,为城乡空间研究提供了新的视角和方法.陕北黄土高原因孕育了深厚的传统文化而成为中华文明重要的发源地之一,但河谷中现代城镇的快速扩张使得陕北黄土高原人居环境建设面临巨大的挑战.为探索并延续陕北黄土高原地区人居环境的智慧与基因,以米脂古城和米脂县城中心的开敞空间体系为例,借鉴网格维数模型的要素测度方法,比较分析传统城镇与现代城镇开敞空间系统的分形秩序,并总结影响分形特征的规划设计因素.

Fractal theory,which is a cutting-edge theory in the domain of self-similar rules of complex system,provides a new perspective and method for the research of urban and rural space forms.The loess plateau in northern Shaanxi is one of the most important cradles of Chinese civilization with profound traditional culture;however,the construction of human settlement in loess plateau faces challenges owing to the rapid urban expansion in the river valley.The paper compares the fractal order of open space in Mizhi Ancient City and Mizhi County by using the measuring method of grid fractal dimension.In conclusion,it sums up the factors that influence the fractal characteristics of open space form and thereby explores and conserves the wisdom and gene of human settlement in loess plateau in northern Shaanxi.