顾及绿视率的街道可步行性评价  

Evaluation of street walkability considering green view index

作　　者：唐丽玉[1,2,3] 黄子晴 苏宏霖 TANG Liyu;HUANG Ziqing;SU Honglin

机构地区：[1]福州大学数字中国研究院(福建) [2]福州大学空间数据挖掘与信息共享教育部重点实验室 [3]福州大学地理空间信息技术国家地方联合工程研究中心

出　　处：《西部人居环境学刊》2025年第1期58-64,共7页Journal of Human Settlements in West China

基　　金：国家自然科学基金项目(41971344)。

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)。Urban green space has a variety of ecological,landscape and social service functions.It is an important component of urban green infrastructure and public service facilities,as well as a key factor in a healthy urban environment.Walking plays an essential role in protecting the environment and promoting health,and promoting the walkability of streets helps to increase social vitality and promote sustainable development.Streets have been proven to surpass parks as the most popular places for walking and physical activity.Therefore,it is extremely critical to quantify the walkability of streets and consider the visual experience of greenery for pedestrians.The Walk Score method is now a commonly used method to measure walkability.The method focuses on measuring the convenient accessibility of walking,such as the spatial layout of stores,parks,and other amenities.However,the environmental aesthetic value of street green spaces influences the quality of the pedestrian environment and promotes the motivation of residents to be active,which is realized through the visual participation of people and is an important indicator of walking comfort.In the context of the big data era,new sources of data are constantly emerging.Street view images may capture the green information in a vertical dimension for the indirect representation of people’s perspective on the ground.Moreover,the green view index(GVI)estimated using Baidu Street View images to represent urban street greening,as an emerging green space evaluation index,providing a new way of thinking to quantify the green environment from a human perspective.The GVI was proposed by Japanese scholars and is defined as the percentage of green pixels in the person’s field of view.In recent years,GVI has been incorporated into governmental terminology and has been highly emphasized in China.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

关 键 词：绿视率 可步行性 街景 街道绿地 步行指数 

分 类 号：TU985.122[建筑科学—城市规划与设计]