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Journal of Chinese
            Architecture and Urbanism                                      Spatial scale plasticity of urban residential areas





































                              Figure 2. Synergies and trade-offs of COVID-19-related goals. Source: Diagram by the authors

            the drug supply chain, leading to a disruption of normal   government adopted a three-zone phased lockdown policy.
            medical treatment.                                 Taking residential quarters as the unit, residents with positive

              Therefore, researchers are aware of the issue of synergies   infections  within  7  days  were  asked  to  self-quarantine
            and trade-offs between the relevant goals established in   in the lockdown zone, where door-to-door service was
            response to COVID-19 and the SDGs. Regarding the   provided. In the control zone, those without positive
            policy goal related to epidemics, its core goal is the health   infections  within  7  days  could  leave  their  homes  but  not
            risk control and the avoidance of mass spread (SDG 3.d).   their residential quarters. Those without positive infection
            Regarding the policy goal related to increased social   within 14 days could move within their subdistricts, turning
            contact and population mobility, its core goal is basic   into a precaution zone. According to the data released by the
            freedom and the right to information for residents (SDG   Shanghai Health Commission, after the static management
            16.10). The two core goals are supported and achieved with   on April 1, there were more than 70,000 residential quarters,
                                                               natural  villages,  units,  or  sites in Shanghai  forming  tiny
            different policy strategies in urban and community spaces.   “management units” that operated almost independently .
                                                                                                           3
            In addition, there are conflicts between the two aspects,
            including policy goals and means of achievement, which   3.2. Spatial distribution and residential characteristics
            are transmitted to the other sub-goals of the two circles   3.2.1. Data acquisition
            (Figure 2).
                                                               First, we captured the addresses with  cases from March 6
              The study is conducted in four steps. In the fourth step,   to May 16  and counted the number of days with reported
                                                                       4
            the model is applied to specific residential planning and   cases at each address point. Second, we captured the data
            design projects in Shanghai (Figure 3).            for the residential quarters from Gaode Map  and classified
                                                                                                  5
            3. Materials and methods                           them into six categories based on the year of completion
                                                               and the characteristics of texture into workers’ new village,
            3.1. Shanghai’s main strategy in response to COVID-19  commercial housing, apartments, villas, lilong, and garden
            According to official reports, Shanghai experienced a wave   3      https://www.thepaper.cn/newsDetail_forward_18356659
            of reported case growth in March 2022 and the 1.5 months   [Last accessed 2022-08-27]
            that followed. Official statistics show that the total cases   4      https://zt.changjing.com.cn/map/viewer?mid=d3vYD
            of new infections in 3 months exceeded 600,000. During    HfujJIkll_WdQ9Hcw [Last accessed 2022-08-27]
            the citywide static management, the Shanghai municipal   5    https://www.amap.com/ [Last accessed 2022-06-23]


            Volume 5 Issue 3 (2023)                         3                        https://doi.org/10.36922/jcau.1242
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