Research on Urban Public Green Space Planning Based on Taxi Data: A Case Study on Three Districts of Shenzhen, China

Abstract

Urban public green space (UPGS) plays an important role in sustainable development. In China, the planning, classification, and management of green spaces are based on the Standard for Classification of Urban Green Space (SCUGS). However, limitations to the UPGS exist due to the over-emphasis on quantitative standards and insufficient consideration of the actual access mode of residents. Though the taxi trajectory data are widely selected to study public service facilities, its adoption in UPGSs research remains limited. Based on the case of UPGSs in the three districts of Shenzhen, we used the taxi (including cruise taxis and Didi cars, which are like Uber) trajectory data to investigate the spatial layout and the allocation of management resource of the UPGSs from the spatial interaction perspective. By rasterizing and visualizing the percentage of pick-up and drop-off points in the UPGSs’ buffer, the service scope of UPGSs was defined, which reflected the spatial distribution and activity intensity of the visitors. Then, an unsupervised classification method was introduced to reclassify the twenty two municipal parks in the three districts. Compared to the traditional planning method, the results show that the service scope of the same type of UPGS in the traditional classification is not the same as the one obtained by the study. Visitors to all UPGSs are distributed as a quadratic function and decay as the distance increases. In addition, the attenuation rates of the same type of UPGSs are similar. The findings of this study are expected to assist planners in improving the spatial layout of UPGSs and optimizing the allocation of UPGS management resources based on new classifications.

Country Park Landscape Quality Evaluation and Optimization Strategies Based on the AHP-TOPSIS-POE Model: A Case Study of Four Country Parks in Shanghai

“…landscape evaluation of urban open spaces, where a landscape evaluation system is constructed through research and information feedback 23 .The other type of study is a practical one, in which feedback is collected in the form of questionnaires and field visits to comprehensively evaluate the use of urban parks in terms of user behaviour and satisfaction, and to suggest improvements. Currently, POE is mostly applied to studies on landscape and facility enhancement of single or several parks and green spaces 24 ，There are relatively few studies on urban park green space systems, but evaluating the use of urban park green space as a whole is an important reference value for improving the green space service function of the whole city 25 。…”

Revealing Taxi Interaction Network of Urban Functional Area Units in Shenzhen, China

“…In addition, they claimed that employment, mixed land use, and road density have significant effects on the ridership of each mode [61]. Zheng et al used the taxi trajectory data to investigate the spatial layout and the allocation of management resource of the urban public green space from the spatial interaction perspective [62]. Shen et al analyzed the spatiotemporal pattern of taxi travel based on an improved network kernel density estimation method [63].…”

Evaluating the legibility of urban parks based on neuroscience and the FVFL model

“…1.4 Classification of parks based on regional and trans-regional scales Since the scale is one of the factors influencing the perception of legibility, it seems necessary to express the classification of parks based on scales. According to different categorizations of urban parks in every country or state (Alikhani et al, 2018;Zheng et al, 2019), the national classification of urban parks in Iran has been chosen to use for this research. Due to the definition of "design criteria of urban green space", urban parks are divided into neighborhood park, local park, district park, regional park and trans-regional park based on the scale.…”

“…According to different categorizations of urban parks in every country or state (Alikhani et al. , 2018; Zheng et al. , 2019), the national classification of urban parks in Iran has been chosen to use for this research.…”