These are content analyses that might be relevant:
Mensah, C. A., Andres, L., Perera, U., & Roji, A. (2016). Enhancing quality of life through the lens of green spaces: A systematic review approach. International Journal of Wellbeing, 6(1).
Irvine, K. N., Warber, S. L., Devine-Wright, P., & Gaston, K. J. (2013). Understanding urban green space as a health resource: A qualitative comparison of visit motivation and derived effects among park users in Sheffield, UK. International journal of environmental research and public health, 10(1), 417-442.
Are these of any interest? They are not strictly content analysis:
Barbosa, O., Tratalos, J. A., Armsworth, P. R., Davies, R. G., Fuller, R. A., Johnson, P., & Gaston, K. J. (2007). Who benefits from access to green space? A case study from Sheffield, UK. Landscape and Urban Planning, 83(2), 187-195.
Coolen, H., & Meesters, J. (2012). Private and public green spaces: meaningful but different settings. Journal of Housing and the Built Environment, 27(1), 49-67.
For the subject that concerns you I will recommend a few papers:
Taylor, L., & Hochulib, D. F. (2016). Defining greenspace: Multiple uses across multiple disciplines. Elsevier, Landscape and Urban Planning, Volume 158: 25-38. DOI: 10.1016/j.landurbplan.2016.09.024.
Coolen, H., & Meesters, J. (2012). Private and public green spaces: meaningful but different settings. Journal of Housing and the Built Environment, 27(1): 49–67. DOI: 10.1007/s10901-011-9246-5.
Amin, A. (2008). Collective culture and urban public space. City, analysis of urban trends, culture, theory, policy, action. Routledge, 12(1): 5-24. DOI: 10.1080/13604810801933495.
Thank you very much Nicolae-Sorin! Appreciated. I have read the two first and those are very useful as you said. I will check the third one i haven't read so far. Thanks for that!