生活圈视阈下公园绿地圈层分布及其协同 区位演变特征——以南京为例

The Evolution Characteristics of Park Green SpaceCircle Distribution and Colocation Quotient from thePerspective of Life Circle: A Case Study of Nanjing

关键词:  风景园林  公园绿地  生活圈  时空分布  协同 区位商  南京

Key words:  landscape architecture  park green space  life circle  spatial and temporal distribution  colocation quotient  Nanjing

摘要:

公园绿地是城市的民生性生态福祉，揭示其时空分布 规律是提升生活圈生态宜居质量的关键。基于生活圈全服务设 施要素体系，利用POI与土地利用数据，借助多环缓冲区与协 同区位商方法，系统揭示2012、2016、2020年南京中心城区 公园绿地布局特征与水平。结果表明：1)公园绿地集聚性与临 近性在古城＞副城＞主城边缘，圈层特征显著；2)公园绿地在 各级生活圈分布由均衡渐趋聚集，5 min生活圈是游园、社区 公园的核心聚集区，大型公园绿地则多圈层均衡分布；3)公园 绿地协同区位水平快速、均衡提升，其中游园与生活配套设施 协同区位特征近似，社区公园与大型公园绿地协同区位水平仍 较低。提出通过复合增效与跨区延伸、挖潜拓维与内外联动、 多功能补位与缩距提质，满足不同区域居民日常性、偶发性活 动需求。成果深化了生活圈中公园绿地布局演化规律，可为协 同配置公园绿地与服务设施要素提供科学依据。

Abstract:

Park green space (PGS) is a livelihood ecological welfare of the city, and revealing its spatial and temporal distribution pattern is the key to improve the ecological livability quality of the life circle. Based on the full-service facility element system of the life circle, POI and land use data are used to systematically reveal the characteristics and levels of PGS layout in the central city of Nanjing in 2012, 2016 and 2020 with the help of multi-ring buffer and the colocation quotient methods. The results show that: 1) The PGS agglomeration and colocation quotient in the old city > the vice city > the edge of the main city, the circle characteristics are significant; 2) The PGS at all levels of life circle distribution by the balanced gradual aggregation of the 5min life circle is the core of the gathering area of gardens and community parks, and large PGSs are distributed in a balanced multi-ring; 3) The level of PGS colocation quotient is improving rapidly and evenly. Among them, the colocation quotient characteristics of gardens and living facilities are similar, and the colocation quotient level of community parks and large PGSs continues to be low. It is proposed to meet the needs of residents in different areas for daily and occasional activities through compounding efficiency and cross-area extension, tapping potential and expansion and internal and external linkage, multi-functional complementary location and distance reduction and quality improvement. The results deepen the law of PGS layout evolution in the life circle, which can provide scientific support for the synergistic layout of PGS and service facilities elements.