住区周边土地混合度与老年人步行水平相关性研究

Study of the Correlation Between Land Use Mix of Residential Area and Walkability of the Aged

目的 :实证住区周边土地混合度与老年人步行水平的关系,为我国健康城市建设提供基础数据支撑。方法:问卷调查北京中心城和郊区两个典型住区老年人的必要性、怡情类、康体类活动的步行出行距离、频率、比例,同时利用土地混合熵公式计算以住区几何中心为圆心,1km为缓冲半径区域的土地混合度。对比住区老年人的步行情况与土地混合度的关系,寻找两者的相关性。结果:中心城住区土地混合度为0.70,高于城郊住区的0.27。两住区老年人散步距离相近;中心城住区的交通性步行出行的周距离、均次出行距离是城郊的2.1和2.4倍。结论:较高的土地混合度对于老年人特别是老年男性的日常步行水平有积极的影响,在作用机制上主要是通过提升平均出行距离以及必要性和怡情类活动出行频率实现的。

Objective Empirical Study on the correlation betweenland use mix of residential areaand walkability of the aged to enhance the basic data of healthy city theory, Methods The aged of two residential areas which selected from downtown and suburban were investigated about the walking distance, frequency and ratio of necessity activity, edifying sentiment activity and exercise by questionnaire and interview. Compute the land use mix of the circle area with 1 km as radius and the geometric center of residential area as the circle center. The results were compared to find out the correlation between land use mix of residential area and walkability of the Aged. Results Downtown residential area is 0.70 on the land use mix, suburban is 0.27. The aged from downtown residential area was 2.1 and 2.4 times higher than suburban on average distance of one week and one time. Conclusion Correlative analysis showed that there was a positive correlation between land use mix of residential areaand walkability of the Aged, especially in mate. And more land use mix can raise the average trip distance and the frequencyof necessity and edifying sentiment activity of the aged.