不同时期上海城市公园可达性比较——基于两步移动搜索模型

Comparisons of Shanghai Urban Park Accessibility——Based on Two-Step Floating Catchment Area Model

城市公园的合理布局对城市的健康发展意义重大。文章基于两步移动搜索模型,利用上海人口普查数据与公园面积和开放时间等数据,在居委会尺度上,评价了上海中心城集中建设区内1999年、2009年及2019年3个历史时期的城市公园可达性。结果显示,20年间,上海公园数量、公园总面积、人均公园面积等指标有了显著提高。1999—2009年,上海集建区内居委会公园可达性指数平均增加了0.37。与1999年相比,2019年集建区内居委会公园可达性指数平均增加了0.93。但由于常住人口数量增加,部分地区公园可达性有所降低,研究结论可为未来城市公园规划建设提供基础。

The proper distribution of urban parks is important to the healthy development of urban areas.Based on Two-step floating catchment area model(2 SFCA),utilizing Shanghai census and park area and open year data,this study evaluates urban park accessibility of Shanghai Centralized Construction Area(CCA)at the level of neighborhood in the year of 1999,2009 and 2019.The results indicate that the number of Shanghai parks,total park area and park area per capital have dramatically increased.During the decade between 1999 and 2009,on average,park accessibility within the CCA has increased 0.93.Compared to the accessibility in 1999,accessibility in 2019 has an average increase of 0.93.In contrast,some areas have a decrease in park accessibility because of the increase of population.These results can shed lights on future park planning.