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基于时空棱柱的实时可达空间的概念模型与测度

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个体活动与地理环境的交互越来越在实时维度上呈现多变性与动态性特征.如何理解行为活动与空间的实时互动变化已经成为当下地理学科发展的前沿议题与关键挑战.基于时空棱柱方法,考虑到人的主观决策与环境条件的实时变化,研究论证了动态决策及决策点的概念,分析了动态决策如何影响着时间资源的分配,并且据此提出了基于决策点的实时可达空间概念模型.其次,通过引入时间切片、等时圈等方法,实现对该模型的构建与测度,并将其拓展至多决策点.最后,在原有模型的基础上,提出了考虑路径决策的实时可达空间模型.在动态视角下测度个体实时可达空间,有助于透视地理空间对个体行为的影响机制与过程,有助于评估及优化设施布局以及服务资源的组织,提升地理环境对新时期个体行为的适配性、支持与引导.
Real-time reachable space based on space-time prism:Conceptual models and measurement
The real-time interaction between human behavior and geographic context is becoming varied and dynamic.Understanding the interaction between human activity and environment has become a frontier in geographical research.Space-time prism provides a spatiotemporal integration method to understand the interaction,but its classical model is still a static model.In this study,.we utilize the space-time prism model to investigate how individual decision-making relates to their potential activity space and real-time accessibility.We enhance the classical space-time prism model by introducing the concept of decision points,resulting in an improved conceptual model of real-time reachable space that accounts for both the real-time changes of environment and the dynamics of individual decisions.We apply time slices and isochronous circles to measure real-time reachable space quantitatively.Additionally,we propose a methodology for comparing real-time accessibility across different decision points to facilitate a detailed analysis of the real-time dynamics and accessibility of human behavior within geographic space.Furthermore,to expand the model's applicability under different real-world scenarios,we introduce a real-time reachable space model that considers specific path selection and time budget as input constraints.Dynamic measurement of an individual's real-time reachable space holds great potential for understanding how geographic space influences human behavior.By quantifying variations in real-time reachable space,we can gain valuable insights into the ways geographic factors shape individual behavior.These insights will greatly contribute to evaluating and optimizing facility and service resource allocation,thereby enhancing the fitness,support,and guidance of the geographic environment for individual behavior in the modern life.

space-time prismdynamic decision makingreal-time reachable spacetime geographypotential path space

廖静莹、林姚宇、肖作鹏、柴彦威

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哈尔滨工业大学深圳校区建筑学院,深圳 518038

深圳市城市规划决策与仿真重点实验室,深圳 518038

北京大学城市与环境学院,北京 100871

时空棱柱 动态决策 实时可达空间 时间地理学 潜在路径空间

国家自然科学基金深圳市自然科学基金

41801151JCYJ20190806144618382

2024

地理学报
中国地理学会 中国科学院地理科学与资源研究所

地理学报

CSTPCDCSSCICHSSCD北大核心
影响因子:3.3
ISSN:0375-5444
年,卷(期):2024.79(4)
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