基于“显隐互鉴”的公共空间活力评价研究——以西安市公园绿地为例

A STUDY ON THE EVALUATION OF URBAN PUBLIC SPACE VITALITY BASED ON"EXPLICIT AND IMPLICIT MUTUAL LEARNING":A CASE OF PARK GREEN SPACE IN XI'AN

本文以西安市公园绿地为例,整合城市公共空间的实体属性与虚拟属性,提出“显隐互鉴”的城市公共空间活力分析框架与评价指标体系,基于多源大数据对其活力进行评价,揭示显性与隐性活力的协同类型及隐性活力的显性化机制。主要结论:①显性活力和隐性活力均呈现综合公园>专类公园>社区公园的特征,显性活力高—低值空间分布表现为“中心—外围”结构,隐性活力无明显空间分布规律;②显性活力与隐性活力形成4种高低值匹配类型,高显—高隐公园人气与活力极强,分布于城市二环内,高显—低隐公园具有稳定的人群基础,分布于二、三环之间,低显—高隐为新兴起公园,分布于三环外东北部地域,低显—低隐公园活力最低,分布于二环外北部及三环外南部地域;③隐性活力对显性活力存在正向影响关系,用户评价在隐性活力的显性化过程中起到部分中介作用。

Enhancing the vitality of urban public space is an important way to promote the high-quality development of cities and the construction of high-quality living space.This paper integrates the physical and virtual attributes of urban public space,proposes a framework for analysing the vitality of urban public space and an evaluation index system of"obvious and hidden mutual reference",and evaluates the vitality of parks and green spaces in Xi'an based on multi-source big data as an example,revealing the type of synergy between explicit and implicit vitality as well as the mechanism of revealing hidden vitality,thus proposing strategies to enhance the vitality of urban public space.The main conclusions include:1)both explicit and implicit vitality show the characteristics of comprehensive parks>special parks>community parks,the spatial distribution of high and low values of explicit vitality shows the structure of"centre-periphery";2)explicit vitality and implicit vitality form four types of high and low values,which are the same as those in other urban public spaces.3)Hidden vitality has a positive influence on explicit vitality,and user evaluation plays a partly intermediary role in the process of manifestation of hidden vitality.