| 摘要: |
| 15min生活圈能够提升老年人群健康安全的生活质
量。老年人群与城市绿地的连接既依赖道路体系，又面临空气
污染隐患。基于大数据与ArcGIS平台，从绿地可达性视角展
开对南京市中心城区“绿-居-人”体系的空间分布研究。从
健康出行视角综合判断绿地规划、可达便利与老年人群的呼
吸健康。研究发现如下。1)老城区中50岁及以上的人口占比
(4.23%)高于新城区(2.86%)，1997年及之前的老旧小区
面积占比高达64%。2)老城区有67%的居住区在绿地15min
步行范围内，是新城区的2倍多。以老城区为中心向外辐射，
绿地对老年人群的服务效能逐级降低。3)老城区绿地受到的
道路空气污染压力约为新城区的2倍。可达性高的绿地，所受
道路污染源影响也更大。主干道对绿地空气污染压力的源头供
给占40%，对绿地可达性的支持达33%。提倡为老年人群出
行构建健康绿色路网，满足绿地15min可达和低空气污染。
研究成果对城市更新中统筹绿地、路网、居住区布局，优化生
活圈适老化环境具有一定借鉴价值。 |
| 关键词: 风景园林 生活圈 可达性 城市绿地 空气污
染 健康出行 老年人 |
| DOI： |
| 投稿时间：2022-04-12修订日期：2022-07-02 |
| 基金项目: |
|
| Study on Aging Suitability for Healthy Travel in Daily Life Unit Based on Traffic Factors: A Case Study of the Central Urban Area of Nanjing |
| CHEN Ye,YANG Binghui |
| Abstract: |
| The 15-minute life unit can improve the healthy and safe
quality of life of the elderly. The connection between the elderly and
green spaces not only depends on the road system, but also faces
the hidden danger of air pollution. Based on big data and ArcGIS
platform, from the perspective of green space accessibility, this paper
studies the spatial distribution of "green-residence-human" system
in the central urban area of Nanjing. From the perspective of health
travel, green space planning, accessibility and respiratory health of
elderly were judged. The study found that: 1) The proportion of the
population aged 50 and above in the old urban area (4.23%) was
higher than that in the new urban area (2.86%), and the proportion
of the old residential area in 1997 and before was as high as 64%.
2) 67% of residence in the old urban area were within a 15-minute
walk of green space, more than twice as many as in the new urban
area. Taking the old city as the center and radiating outwards, the
service efficiency of green space for the elderly decreased step by
step. 3) The road air pollution pressure of green spaces in old urban
area was about twice that of new urban area. Green spaces with
higher accessibility were also more affected by road pollution. Main
roads contributed 40% to the air pollution pressure and 33% to the
accessibility of green spaces. It is advocated to build a healthy green
road network for the elderly, which can meet the 15-minute distance
between the elderly and green space with low air pollution. The
research results have certain reference value for coordinating the
layout of green space, road network and residence in urban renewal,
and optimizing the suitable living unit for aging environment. |
| Key words: landscape architecture life unit accessibility urban
green space air pollution healthy travel the elderly |
