Reading this, and the linked research*, I think they're including unnatural green spaces like public parks as a "connection".
* "A study found that people in Sheffield on average spent just four minutes and 36 seconds in natural spaces each day." points to https://www.sciencedirect.com/science/article/pii/S001671851...
Reading this, and the linked research*, I think they're including unnatural green spaces like public parks as a "connection".
* "A study found that people in Sheffield on average spent just four minutes and 36 seconds in natural spaces each day." points to https://www.sciencedirect.com/science/article/pii/S001671851...