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城市公共空间的定量研究 ——公共性评估模型综述
李娟1,2, 党安荣3
1.华中科技大学建筑与城市规划学院,讲师;2.北京大学深圳研究生院,副研究员;3.(通讯作者):清华大学建筑学院,教授,博士生导师,danrong@mail.tsinghua.edu.cn
摘要:
从定性描述转向定量测度是当前城 市公共空间研究的趋势之一,开发定量模型 不仅能够辅助验证有关公共性失落的争议, 还能够使公共空间的对比研究更加客观直 接。本研究基于公共性概念在评估模型中的 作用将公共空间的定量研究划分为三大类: 第一类仅关注公共性的部分核心维度;第二 类将公共性视为公共空间整体品质的一部 分;第三类则是对公共性的完整评估。基于 模型的特性,本研究进一步将公共性的完整 评估模型划分为综合模型、简化模型、动态 模型三类,并总结了现有模型的优缺点。研 究发现,公共性定量评估模型主要围绕管理、 包容性、可达性构建指标体系,且不同文化 语境下采用的指标适配于各自的本地特质, 指标评价标准更加关注管理的权利和责任分 配、关注公共空间使用者权益。本研究以公 共性概念为切入点,系统综述围绕公共空间 的量化模型,以期推动公共空间的定量研究。
关键词:  公共空间  公共性  定量研究  测 度模型  多维度指标
DOI:10.13791/j.cnki.hsfwest.20240821001
分类号:
基金项目:国家自然科学基金重点项目(52130804);广东省基础与应用基础研究基金(2023A1515010875); 深圳市科技计划资助项目(RCBS20221008093306009);国家自然科学基金青年科学基金项目(C类)(42401228)
Quantitative research of urban public space: Literature review on evaluation model of thepublicness
LI Juan,DANG Anrong
Abstract:
The term “public space”, as a distinct concept, first emerged in the sociological and political philosophical discourses of the 1950s. It was later introduced into the fields of architecture, urban design, and urban planning by scholars such as Lewis Mumford and Jane Jacobs. This new terminology arose from the inadequacy of existing concepts to address evolving social trends and ideologies. It marked a shift in urban studies from a utilitarian, function-driven perspective to one that prioritizes the humanistic and social value of space. The focus also transitioned from the concrete notion of “space” to the more abstract concept of the “public”, specifically the “publicness” of space. Public spaces are traditionally regarded as being provided and maintained by the public sector. However, in recent years, the growing involvement of the private sector has become increasingly common, resulting in a rising number of public spaces being dominated by private entities. The management of such spaces often tends to be exclusionary, with limited consideration for public interests. Consequently, some scholars have proclaimed the "end of public space" or the "end of public culture". The pervasive trends of privatization and commodification, combined with heightened security concerns, have led to stricter control over public spaces. Despite these challenges, some optimistic perspectives argue that effective management strategies can yield positive outcomes, and private sector participation in the provision and management of public spaces may offer a more suitable approach to organizing contemporary cities. The theoretical reflections on publicness have led to a quantitative turn in public space research, with three main implications. Firstly, it involves a shift from traditional qualitative descriptions to the quantitative measurement of publicness, which develops measurement models to verify arguments about the fall of the publicness. This quantitative approach allows researchers to assess whether urban development and practices have indeed neglected publicness, whether the public sector performs better in ensuring publicness, and whether privatization necessarily leads to its decline. Secondly, quantitative research enables a more explicit and objective comparative analyses of public spaces, which helps to identify specific and nuanced differences between them. Thirdly, through the development of quantitative models and indicators, theoretical discussions of publicness are integrated with the physical characteristics of real urban spaces. This bridges the gap between theory and practice, and makes the theories of publicness practicable in guiding spatial planning and design. Therefore, this paper reviewed existing quantitative models in public space studies and highlight their strengths and weaknesses to inspire future studies. Based on the role that the concept of publicness plays in these measurement models, this paper classifies the quantitative research on public space into three categories. The first category includes models that explore partial dimensions of publicness aimed at probing the prominent changes occurring in and around public spaces, such as increasing control, theming/fantasy, and Disneyfication. These changes fundamentally address core issues central to the concept of publicness. The second category consists of models designed to evaluate the quality of public space and generateuseful suggestions on how to improve it. In these models, characteristics of publicness are often implicitly regarded as components of “good” public space qualities. Consequently, the indicators used to assess the quality of public space share significant similarities with those used in models that directly evaluate publicness. The third category involves complete evaluations of publicness itself. This category is further concluded into three types: comprehensive models, simplified models, and dynamic models. Through a systematic review, the study finds that the indicators used to evaluate the publicness of public spaces are primarily developed around the dimensions of management, inclusiveness, and accessibility, while also aligning with specific local contexts. The grading criteria for these indicators place greater emphasis on the obligations and responsibilities of management as well as the rights of public space users. Finally, with advancements in AI technologies and the prevalence of smartphones and location-based services (LBS), it proposes two research directions for improving the quantitative models of public space. Firstly, future research could leverage multi-source big data, such as social media data and mobile phone signaling data, to better capture the utilization of public spaces. This approach would enable more precise measurements of public space usage, including user diversity, the spatiotemporal distribution of space utilization, and usage intensity. Such methods could enhance the objectivity of diversity measurement in existing models. Secondly, image semantic analysis could be utilized to identify spatial features related to publicness. Data from street view images, active sensing images, wearable devices, and other sources could be analyzed using AI and deep learning techniques. These technologies can automatically identify and classify public space features and elements, fostering more scientifically robust and data-driven research on public spaces.
Key words:  public space  publicness  quantitative research  measurement model  multi-dimensional indicators