广州市中心城区公园可达性时空演变  

Spatial and Temporal Evolution of Park Accessibility in Downtown Guangzhou

作　　者：朱战强[1,2,3] 吴月婵 秦日成 Zhu Zhanqiang;Wu Yuechan;Qin Richeng(School of Geography and Planning,Sun Yat-Sen University,Guangzhou 510275,China;Public Safety and Disaster Research Center of Guangdong Province,Guangzhou 510275,China;Guangdong Key Laboratory for Urbanization and Geo-Simulation,Guangzhou 510275,China)

机构地区：[1]中山大学地理科学与规划学院,广州510275 [2]中山大学广东省公共安全与灾害工程技术研究中心,广州510275 [3]中山大学广东省城市化与地理环境空间模拟重点实验室,广州510275

出　　处：《热带地理》2023年第5期945-958,共14页Tropical Geography

基　　金：国家自然科学基金项目(41401166、42271234);教学质量与教学改革工程类项目(37000-12220011)。

摘　　要：随着城市化进程的不断推进,城市人口高速增长,公园供给与人口需求之间的矛盾日渐凸显,但公园布局均衡性在城市人口和居住空间动态变化过程中发生的变化尚未得到足够地关注。本研究通过改进高斯两步移动搜索法和热点分析法,分析2010和2020年广州市中心城区公园可达性的时空演变格局。研究发现:1)2010—2020年,广州公园可达性平均值提高,可达性改善的社区集中在环城高速内老城区及城市重点开发建设区域;随着出行范围扩大,公园供给盲区减少,在公交出行方式下,社区基本实现了15 min公园可达。2)在步行、骑行和公交3种出行方式下,公园可达性具有显著的空间集聚效应,热点区域主要集中在珠江沿岸;冷点区域主要集中在环城高速外的外围城区。经十年城市化建设后,热点区域减少;冷点区域扩大,低值集聚趋势显著。3)在城市规划政策、政府引导下,公园有序建设与人口流动综合形成公园空间分布公平区和不公平区,不公平区内有待适度布局公园、优化公园品质。The rationality of the spatial distribution of parks plays an important role in measuring cities'livability levels,promoting residents'physical and mental health,and promoting social interaction.However,with the continuous progress of urbanization and the rapid growth of the population,the contradiction between the supply of parks and the demand of people has become increasingly prominent.Moreover,the balance of the park layout did not receive enough attention when the urban population and residential spaces underwent dynamic transformations.This study analyzed the spatial and temporal evolution pattern of park accessibility in downtown Guangzhou in 2010 and 2020 using the Gaussian-based two-step floating catchment area(2SFCA)and hot-spot analysis methods.The results show that:1)From 2010 to 2020,the average accessibility of parks in downtown Guangzhou increased.The communities with reduced park accessibility are areas with significant population increases,such as central Tianhe,eastern Haizhu,parts of Baiyun,and southern Liwan.The communities with improved park accessibility are mainly key urban development areas,such as Huangpu and Baiyun.Park accessibility has also improved in the depopulated old town within the Ring Highway.With the expansion of the travel range,the blind area of park supply is significantly reduced,and"seeing the park in 15 minutes"is realized under the bus travel mode.2)Between 2010 and 2020,there was a spatial clustering phenomenon in the accessibility of parks under three travel modes.The impact of travel modes on the spatial clustering degree of park accessibility is obvious,and the change of spatial autocorrelation caused by time evolution is weak.With the improvement of travel range,the hot-spot and the cold-spot areas gradually expand,and the spatial agglomeration characteristics become more obvious.The hot-spot areas are mainly located in the old urban areas along the Pearl River and the Ring Highway,while the cold-spot areas are mainly located in Liwan and the outer urban areas outs

关 键 词：公园 可达性 改进高斯两步移动搜索法 热点分析 广州市中心城区 

分 类 号：K901[历史地理—人文地理学]