*4.4. Limitations of the Study*

We acknowledge several limitations for this study. First, the study focused on a representative community greenway in Haizhu District of Guangzhou. The results should be verified in more case studies in other regions. Future research should sample community greenways in other regions and compare the results to get a better understanding of how community greenways serve residents in different social contexts. In addition, investigation time was between 9:00 am and 18:00 pm during the day, not including the morning and evening time. Although the previous research on the greenway or public space did not indicate the impact of the research time on the research results [15,32,46,50]. In the interviews, the author found that a considerable number of residents like to go to the greenway in the morning or evening, so the survey may ignore people at these times.

The study classified the service of community greenways into three aspects: respectively for necessity activities, optional activities and social activities, and studied how community greenways serve the three types of activities through self-report of residents. Whether there is any correlation among these aspects still needs more research. The future research can quantify the relationship of community greenways and residents' life by constructing the relationship model with the three aspects, and to study the weight coefficient of each aspect in the overall relationship between community greenway and the resident life.
