南京公园绿地与城市功能空间的时空关联特征——基于Ripley’s K函数与POI数据  

Spatiotemporal Correlation Characteristics between Park Green Space and Urban Functional Space in Nanjing——Based on Ripley's K Function and POI Data

作　　者：伍萱 邵大伟[1] 吴殿鸣[1] WU Xuan;SHAO Dawei;WU Dianming

机构地区：[1]苏州科技大学建筑与城市规划学院,苏州215011

出　　处：《中国园林》2023年第5期92-97,共6页Chinese Landscape Architecture

基　　金：国家自然科学基金项目“城市绿地与居住用地空间耦合的过程、效应与机理研究——以南京为例”(编号:51878429);江苏省研究生科研创新计划项目“公园绿地与城市功能空间的多尺度时空关联及其机理研究”(编号:KYCX21_3057);苏州科技大学风景园林学学科建设项目共同资助。

摘　　要：探究公园绿地与城市功能空间的分布关系及其演变特征,是促进二者高效协同发展的基础。基于POI及土地利用数据,借助核密度分析、双变量Ripley’sK函数等方法,以南京为例揭示了2012、2016、2020年公园绿地、各城市功能空间的时空关联关系及其演变规律。结果表明:1)公园绿地、各城市功能空间分布呈现古城聚集并向主城外围扩散趋势;2)主城区范围内,分别以公园绿地视角观察功能空间、以功能空间视角观察公园绿地,均呈现逐年减弱的聚集趋势,且距离阈值、变化趋势双向趋同;3)古城区范围内,城市功能空间在公园绿地周边聚集,除商业、居住空间聚集强度先增加后降低外,其余均持续增强,而公园绿地在各城市功能空间周边呈现逐年减弱的离散模式。研究结果有助于深化公园绿地与城市空间演化理论,为二者高效协同和高品质人居环境营造提供科学支撑和规划依据。To explore the distribution relationship and evolution characteristics of park green space and urban functional space is the basis for promoting their efficient and coordinated development.Based on POI and land use data,with the help of kernel density analysis,bivariate Ripley's K function and other methods,this paper takes Nanjing as an example to reveal the spatiotemporal relationship and evolution law of park green space and urban functional space in 2012,2016 and 2020.The results show that:1) The spatial distribution of park green space and urban functions presents the trend of ancient city agglomeration-peripheral diffusion of the main city;2) Within the main urban area,the distribution of each other is observed from the perspective of park green space and each urban functional space,showing a decreasing aggregation mode year by year,and the distance threshold and change trend converge in both directions;3) Within the scope of the ancient city area,the urban functional space is gathered around the park green space as a whole.Except that the concentration intensity of commercial and residential space first increases and then decreases,the rest continues to increase;and the park green space around the urban functional space presents a discrete pattern of weakening year by year.The results will help to deepen the theory of park green space and urban space evolution,in order to provide scientific support and planning basis for the efficient coordination and high-quality human settlements.

关 键 词：风景园林 公园绿地 城市功能空间 时空关联 POI 双变量Ripley’s K函数 南京 

分 类 号：TU986[建筑科学—城市规划与设计]