Read more about Urban Green Commons:
Bendt, P., Barthel, S. and Colding, J. 2013. Civic greening and environmental learning in public-access community gardens in Berlin. Landscape and Urban Planning 109: 18–30. http://www.cityfarmer.info
Colding, J. 2011. Creating incentives for increased public engagement in ecosystem management through urban commons. Pages 101-124 in Adapting Institutions: Governance, Complexity and Social-Ecological Resilience. Emily Boyd and Carl Folke (Eds.). Cambridge University Press, Cambridge, UK.
Colding, J. and S. Barthel (2013). The potential of ‘Urban Green Commons’ in the resilience building of cities, Ecological Economics 86:156–166. http://www.sciencedirect.com/science/article/pii/S0921800912004429
Colding, J., Barthel, S., Bendt, P., Snep, R. vander Knaap, W. and Ernstson, H. 2013. Urban green commons: Insights on urban common property systems. Global Environ. Change (2013), http://dx.doi.org/10.1016/j.gloenvcha.2013.05.006
Urban Green Commons—from Stockholm, Amsterdam, Berlin to Cape Town: http://www.situatedecologies.net/archives/143