| 摘要: |
| 城市绿地具有生态、景观和社会等多种服务功能,是健康城市环境的关键因素。街道绿地影响着步行环境的质量,是衡量步行舒适性的重要指标。绿视率为从人本视角量化绿化环境的描述因子。针对当前可步行性评价较少考虑步行环境这一问题,在步行指数评价方法的基础上,基于路网、兴趣点、百度街景等大数据,以步行指数表征街道功能,以绿视率表征街道环境,对街道可步行性进行综合评价。以福州市中心城区进行实例研究,对比综合评价方法与步行指数评价方法,探讨其与人口活动数量的关系,并探索街道可步行性的影响因素。结果表明：福州市中心城区内的街道可步行性平均得分为58,街道可步行性较好,其中支路、住宅类街道的可步行性最高；整体上，综合评价方法与人口活动数量的正相关系数为0.313,较步行指数评价方法提高0.018；不同交通等级的街道绿化环境对可步行性有不同的影响,支路的绿视率水平与可步行性存在显著的正相关关系(r=0.135)。 |
| 关键词: 绿视率 可步行性 街景 街道绿地 步行指数 |
| DOI： |
| 分类号:K90 |
| 基金项目:城市园林绿地三维绿量和绿视率的定量化估算方法(41971344) |
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| Evaluation of street walkability considering green view index |
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HUANG Ziqing,TANG Liyu,SU Honglin
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| Abstract: |
| Urban green space has a variety of ecological, landscape and social service functions, as a key element of a healthy urban environment. Street green space affects the quality of the walking environment, which is an important indicator of walking comfort. Moreover, the Green View Index(GVI) is a descriptive factor that quantifies the greening environment from a human perspective. Aiming at the problem that the current walkability evaluation rarely considers the walking environment, a comprehensive evaluation of street walkability was made on the basis of big data such as road network, point of interest and Baidu street view images. The street function was characterized by the walkability index, and the street environment was characterized by the GVI. Taking Fuzhou downtown as a case study, the comprehensive evaluation method was compared with the walking score evaluation method, its relationship with population activity was explored, and the variables influencing street walkability were examined. The average score of the comprehensive evaluation of street walkability in the study area is 58, which means that the street walkability is good. And branch roads and residential streets had the highest walkability. Overall, the positive correlation coefficient between the comprehensive evaluation method and the number of population activities is 0.313, which is 0.018 higher than the walking index. Street environments with different traffic levels have different effects on walkability. In particular, there is a significant positive correlation between the GVI and walkability (r=0.135). |
| Key words: green view index walkability street view image street green space walk score |
