Courses,characteristics and motivations of spatial and temporal evolution of national forest cities in China
[Objective]This study,with an analysis of the courses,characteristics,and motivations of the spatiotemporal evolution of 219 national forest cities,is aimed to countermeasures and suggestions for the current imbalance in the spatial distribution of national forest cities so as to promote the coordinated development of China's ecological,economic,and social systems.[Method]First,development stages and construction concepts of national forest cities were determined from the macro perspective of China's social and economic development with an analysis of the literature and the survey of history.Then,kernel density estimation,Gini coefficient,and standard deviation ellipse were employed to analyze the spatial evolution characteristics of national forest cities.At last,an exploration was conducted of the factors affecting the space-time evolution of national forest cities with the employment of overlay analysis,matrix analysis and SPSS.[Result](1)The macro development stage can be summarized into three stages,namely basic exploration,system standardization,and rapid development whereas the construction concepts were featured with three changes:from fragmentation to integration,from transition to natural wind and from green to live.(2)In terms of the evolution of spatial quantity,administrative regions covered five levels,the quantity distribution was highly consistent with the"Hu Huanyong Line",and the number of gathering centers had increased.(3)The evolution of spatial situation was featured with agglomeration,directionality and linkage,displaying the linkage development mode of"breakthrough on the point,connection on the line and expansion on the whole".[Conclusion]In terms of administrative power,the government provides support and guidance for the construction of national forest cities through policy regulation and concept upgrading;the natural binding force and social driving force determine whether the city has the necessary conditions to develop into a high-quality and low-cost national forest city,and determine the quantity distribution and spatial evolution trend of them whereas the urban transformation force provides a starting point for the upgrading of national forest cities in accordance with the needs of the masses.This study has also put forward the countermeasures and suggestions to promote the balanced development of national forest cities on the basis of motivation analysis.[Ch,4 fig.4 tab.22 ref.]
national forest cityurban forestspatial and temporal evolutionspatial characteristicsinfluencing factors