| 摘要: |
| 城市活力是不停流动且有一定流动
特征的，活力流动的时空分布规律与影响机
制是激发城市全时段活力的重要依据。研究
以天津市主城区为例，在多源数据的基础
上，通过空间自相关分析、核密度与绝对信
息熵计算，以及最小二乘法和地理加权回归
分析等方法，从时间与空间两个维度分析昼
夜城市活力的流动特征及其影响因素的作用
机制。结果表明：第一，受人群活动规律影
响，主城区工作日、休息日城市昼夜活力流
动状态表现出随时间变化而变化的规律性；
第二，主城区城市昼夜活力流动具有显著的
空间集聚性，且分为“高高”“低低”“高
低”“低高”四种集聚类型；第三，居住区
密度、路网密度、公共服务设施密度和功能
混合度对城市昼夜活力流动变化的影响较
小，生活服务设施密度、商务设施密度、商
业设施密度、人口密度的影响较大，且交通
可达性对工作日的城市昼夜活力流动影响较
大，文化设施密度对休息日的城市昼夜活力
流动影响较大。 |
| 关键词: 城市活力 活力流动 时空特征 影响机制 天津市 |
| DOI：10.13791/j.cnki.hsfwest.20240104003 |
| 分类号: |
| 基金项目:教育部人文社会科学研究规划基金一般项目（22YJAZH042） |
|
| A preliminary study on the temporal and spatial characteristics and influence mechanismof urban day and night vitality flow in the built-up area environment: Taking the mainurban area of Tianjin as an example |
|
ZHANG Xiuqin,WANG Qiaoxu,YUN Yingxia,GONG Tongwei
|
| Abstract: |
| As an important manifestation and evaluation index of the quality of urban space, research
on urban vitality in China has achieved relatively fruitful results at the present stage. However,
overall, the existing research still has the following deficiencies: Firstly, urban vitality is not static. It
is constantly changing and flowing, manifested as the people coming and going on the streets
throughout the 24 hours and the diverse activities they carry out using various facilities. Therefore,
studying static urban vitality can only reveal the distribution characteristics of urban vitality at a
certain moment. Secondly, regarding the establishment of the index system of influencing factors of
urban vitality, current research mainly determines it according to the factors involved in the vitality
measurement index system, including physical spatial environmental elements, the internal
environment of the space, traffic convenience, and the geographical location of the space, etc. After
the influencing factors are determined, the research on the influencing mechanism is directly carried
out, without further screening to determine whether the selected influencing factors are direct
influencing factors or what their influence magnitudes are.Taking the main urban area of Tianjin as an
example, on the basis of multi-source data, the activity of day and night vitality flow is defined by
quantifying the vitality difference and vitality standard deviation in the basic research unit, and the
characteristics of day and night urban vitality flow are analyzed from two dimensions of time and
space through the change of vitality difference in different periods and spatial autocorrelation
analysis, and the influencing factors of day and night vitality flow are quantified and screened by
kernel density and absolute information entropy calculation. Finally, the mechanism of influencing
factors is studied by least square regression analysis and geographically weighted regression analysis.
The results show: 1) influenced by the law of crowd activity, the changes of urban day and night
dynamic flow state in the main urban area on working days and rest days are quite different in each
period. It shows the regularity of changing with time. 2) The flow of urban day and night vitality in
the main urban area has significant spatial agglomeration, which is divided into four types: “highhigh”,
“low-low”, “high-low” and “low-high”. 3) The density of residential areas, road network
density, public service facilities density and functional mixing degree have little influence on the
change of urban day and night vitality flow, while the density of living service facilities, business
facilities, business facilities and population density have great influence. The traffic accessibility has a
great influence on the urban day and night vitality flow on the working day, and the density of cultural
facilities has a great influence on the urban day and night vitality flow on the rest day. This researchhas certain theoretical and practical significance for revealing the spatio-temporal distribution characteristics of the flow of urban vitality and formulating
strategies to stimulate urban vitality throughout the whole day.
Based on the comprehensive analysis of the spatio-temporal characteristics and influencing mechanisms of the flow of urban vitality both during the day
and at night in the main urban area of Tianjin, the following strategic suggestions are put forward: Firstly, pay attention to the negative impact of the high
population density in the urban central area on the flow of vitality. Secondly, although the ranking of the influence of living service facilities among all
influencing factors is not high, they have a relatively high positive influence coefficient. Strengthening the construction of living service facilities is an
important measure to promote the flow of urban vitality. Thirdly, pay attention to the negative impact of insufficient or excessive traffic accessibility on
working days on the flow of vitality both during the day and at night. Fourthly, there is a significant correlation between the density of cultural facilities and the
flow of vitality both during the day and at night in the four outer districts on rest days. Enriching cultural facilities is an important measure to promote the flow
of vitality in the four outer districts.
Deficiencies and Prospects are as follows. Firstly, when calculating the density of various urban functional facilities using POIs, it is impossible to
determine the size of the facilities. Secondly, when calculating the urban functional mix degree using POIs, dividing the units with fishnet grids will artificially
sever the connections between POIs, which to a certain extent damages the original continuity of the working and living spaces. Although an environment for
the perception of people’s lives is established by generating a neighbor table in the calculation, there is still a certain difference from the real scene. Thirdly,
due to limitations of some data, such as the lack of data on the latest building floors, etc., the richness of the research is insufficient. Finally, in the future,
further research can be conducted on the time-based influencing mechanism of the flow of urban vitality both during the day and at night. |
| Key words: urban vitality vitality flow spatial and temporal characteristics influence mechanism Tianjin |
