Aide, T. M., Montoro, J. A., Jr., S. M. B., Valle, H. F. del, Devisscher, T., Jabbour, J., Kant, S., et al. 2012. Land. The Fifth Global Environment Outlook (GEO-5) (pp. 65-96). United Nations Environment Programme.

Download the publication here:

http://unep.org/geo/pdfs/geo5/GEO5_report_C3.pdf