| 摘要: |
| 城市街区作为居民日常生活与游憩的重要空间环境，不仅提供物质产品，还可在精神感知层面提供景观服务，是提升人类福祉的关键。既往研究依赖于有限的数据源，难以对大规模城市街区景观的居民感知展开量化分析，不利于景观服务评价体系的完善。以街景数据为基础，提取绿视率、天空视率、建筑视率3种城市室外环境视觉景观要素；对城市街区居民安全、活力、美丽、富裕、压抑和无聊6项感知指标开展测度；并通过多元线性回归分析揭示视觉景观要素与居民精神感知之间的联系。结果表明，城市中绿色空间、蓝色空间、灰色空间随城市功能特征均呈现聚集分布的规律：整体绿色视觉要素较匮乏；积极感知与消极感知具有明显空间分异；绿视率对于居民综合感知具有极显著的正向影响。大范围测度城市街区景观的感知情况为景观服务评价提供了一种新的思路和方法，以期指导未来的景观提升和城市更新。 |
| 关键词: 景观服务 街景图像 深度学习 视觉景观要素 量化评价 |
| DOI：10.14085/j.fjyl.2022.10.0045.08 |
| 分类号:TU986 |
| 基金项目:国家自然科学基金（编号 52038007） |
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| Measurement and Spatial Distribution of Perception in Urban Blocks from the Perspective of Landscape Service |
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HU Yike1, ZHANG Tianlin1, WANG Lei1, HE Jie2
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1.Tianjin University;2.Harbin Institute of Technology (Shenzhen)
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| Abstract: |
| As an important spatial environment for residents’ daily life and recreation, urban blocks provide not only material products, but also landscape services at the level of spiritual perception, and are thus deemed as the key to improving human well-being. Previous researches mainly rely on limited data sources, and thus can hardly quantitatively analyze the perception of large-scale urban areas, which is not conducive to the improvement of the landscape service evaluation system. Based on streetscape data, this research extracts three visual landscape elements of urban outdoor environment, namely green view index, sky view index and building view index. Additionally, the research measures the six indicators of safety, vitality, beautifulness, wealthiness, depression and boringness concerning residents’ perception of urban blocks, and reveals the relationship between visual landscape elements and residents’ spiritual perception through multiple linear regression analysis. Research results show that, green, blue and grey urban spaces all present the law of aggregation in correspondence to urban functional characteristics. Specifically, green visual elements are relatively scarce overall; there exists a significant spatial variation between positive perception and negative perception; the green view index has a highly significant positive effect on the overall perception of residents. By measuring the perception of urban block landscape on a large scale, this research provides a new idea and method for landscape service evaluation, in hope of providing guidance for future landscape improvement and city renovation. |
| Key words: landscape service streetscape image deep learning visual landscape element quantitative evaluation |
| 引用本文: | 胡一可,张天霖,王磊,何捷.景观服务视角下城市街区感知测度及空间分布特征[J].风景园林，2022，29（10）：45-52. |
| HU Yike,ZHANG Tianlin,WANG Lei,HE Jie.Measurement and Spatial Distribution of Perception in Urban Blocks from the Perspective of Landscape Service[J].Landscape Architecture Journal, 2022, 29(10):45-52. |
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