The Evolution Characteristics of Park Green Space Circle Distribution and Colocation Quotient from the Perspective of Life Circle:A Case Study of Nanjing
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.
landscape architecturepark green spacelife circlespatial and temporal distributioncolocation quotientNanjing
NETL
NSTL
万方数据
