城市老年人户外体力活动时空特征的社区分异——基于GIS、GPS、加速度计的实证研究

城市老年人的户外体力活动的时空特征直接反映了其对城市体育空间的利用情况及闲暇时间的体力活动情况。本文基于2017年南京市老年人GPS活动轨迹和GT3⁺调查的第一手数据,运用MATLAB时空密度趋势面的可视化技术和GIS测度空间面积分析并比较南京市不同社区老年人户外体力活动的时空特征、活动空间形态与面积、体力活动量等,揭示不同社区老年人户外体力活动时空特征的社区分异,为政府相关部门了解城市老年人户外活动规律提供理论依据,为城市规划建设部门改善相应的社区建成环境、促进老年人积极的生活方式提供实践指导。

COMMUNITY DIFFERENTIATION OF SPATIAL AND TEMPORAL CHARACTERISTICS OF OUTDOOR PHYSICAL ACTIVITY IN URBAN ELDERLY: AN EMPIRICAL STUDY BASED ON GIS,GPS AND ACCELEROMETER

Based on the first-hand data of GPS activity track and GT3⁺ survey of elderly people in Nanjing in 2017, combined with time geography, MATLAB visualization technology and GIS method to analyze the spatial-temporal characteristics, activity space shape and area of outdoor physical activity of the elderly people in different communities in Nanjing were analyzed and compared. The research shows that:1) There is obvious community differentiation in the outdoor physical activity of the elderly on working days or rest days, which is characterized by the largest number of marginal communities, followed by integrated communities, with the lowest units and traditional communities; compared with the rest days, working days The MVPA time, total counts, and outdoor activity time increased significantly. 2) There are obvious community differences in the regularity of outdoor physical activity time on the working day. The regularity of the activities of the elderly in the marginal, traditional and comprehensive communities is good, forming a typical "double peak" feature, and the activity time of the unit community is more flexible; rest the edge of the community is characterized by "three peaks". 3) There is obvious community differentiation in the physical form of physical activity of the elderly on working days.