基于时空路径的城市绿地享用公平性 研究——以成都市新、旧城区为例

The Equity of Urban Green Space Enjoyment Based on the Spatial-temporal Approach—A Case Study of the New and Old City Areas of Chengdu

关键词:  风景园林  绿地享用公平  时空路径  时空制约  时间短缺型人群

Key words:  landscape architecture  enjoyment equity of green space  spatial-temporal path  spatial-temporal constraint  time-poor group

摘要:

从时空间行为视角切入，采用居民活动日志搜集成都市新、旧城区的绿地使用者时空路径数据集，辨识不同时间预算人群的潜在可用绿地分布及人群特征，并通过构建绿地时空享用量模型，从时空制约角度对成都市新、旧城区的绿地享用公平性展开分析。研究结果显示：1)成都市新、旧城区的绿地享用格局在辐射范围、享用强度和人群绿地享用时间预算方面具有时空间分异特征；2)日常出行链中固定性活动占比会对人群绿地享用时间预算产生影响；3)随个体时间预算不断被固定性活动所挤占，长距离通勤加班族、担负接送小孩上学的上班族等时间短缺型群体的绿地享用机会被深度制约，日益成为潜在的绿地享用弱势群体，在时间短缺型群体的潜在活动路径范围内增加绿地供给，有利于提高此类人群享用绿地的机会，从而提高片区的整体绿地享用公平性。

Abstract:

This paper starts from the perspective of time and space behavior, and uses the resident activity log to integrate the spatial and temporal path datasets of the green space users in the new and old urban areas, to identify the potential available green space distribution and population characteristics under different time and space elasticity, and to enjoy the green space time and space. The quantitative model analyzes the fairness of the green space in the new and old urban areas of Chengdu in the three dimensions of "time-space-behavior". The results show that: 1) the spatial pattern of green space in the new and old urban areas is significantly different in terms of radiation range, spatial differentiation when enjoying intensity, and the enjoyment of tour rhythm; 2) the identification and addition of types is of great significance to improve the fairness of the overall green space in the area; 3) to identify and analyze the unfairly enjoying the green space in terms of time and space behavior, for high demand and low allocation, high allocation and low enjoyment, time and space. It has a positive guiding role in adjusting the green space layout of the mismatched area, guiding the crowds to navigate the peaks, enhancing the space and time inclusiveness of the green space, and building a smart garden city.