城市绿地时空演化及空间布局模式研究

STUDY ON URBAN GREENLAND SPACE-TIME EVOLUTION AND ITS DISTRIBUTIONAL PATTERN

本文初步探讨了城市绿地时空演化与城市发展的关系 ,指出随城市发展 ,城市绿地设施程度增加自然度降低的演化趋向。以游憩行为理论为依据 ,以吉林市为实例 ,提出了波状和辐射状两种分布态势相结合的城市绿地空间布局模式 ,强调环状绿地与楔型绿地相结合 ,各类分级绿地与游憩系统相结合。进而提出城市绿地建设三个圈层即城市中心散点状绿化带—城市郊区集块状公园绿化带—城市外围连续自然生产绿化带的构想。在此基础上针对城市土地利用程度的地域差异 ,对于城市高度利用区、改造发展区、城市新区和郊区逐一提出了各自的绿地布局策略。

From the viewpoint of grand region, combining with scientific research practice and taking Jilin City as an example, the urban Greenland Space time evolution, Greenland spatial distributional pattern and urban Greenland distributional policy are discussed. According to this we can provide scientific basis for urban ecological construction. This paper is divided into three parts: The first part mainly discussed the relationship between urban Greenland evolution and urban development. It points out that the facilities of Greenland increases while the natural degree reduces with the urban development unusually accompanying the urban population increasing. Greenland preconservation, according to specific law, is very important for us in order to improve the urban ecological quality and to prevent the Greenland from ruin. The second part, taken Jilin City as example, it sums up Greenland space distributional pattern based on the behavioral theory. Leisure behavioral theory shows that the leisure deeds of citizens have certain time and space laws to abice by. Leisure behavior has circularity distribution in the city region with the increasing of leisure time. Resident tourism has both common psychological character and personal mind character. It needs the construction of Greenland planning and leisure landscape to adjust to the mode of resident leisure activities, and to obey the time and space rule of leisure activity. On the basis of the above, the paper raises Greenland space distributional pattern of wave shape together with the radiation shape. This pattern emphasizes on the combination of circle Greenland with the wedge Greenland and the combination of different rank with the recreation system. Then it further put forward the principle of Greenland construction as that urban center scatter pointed shape afforestation belt, urban suburb concentrate lumped park afforestation belt and urban outside continuous production afforestation belt. In the third part, Urban land can be divided into different parts such as highly used district, remading developing district, new district and suburb area. As Greenland planning is concerned, every district has its own characteristic. In view of regional difference of urban land use in present situation, this paper separately puts forward individual policies for Greenland distribution.