Fig. 2: A summary of more than 40 terms referred to as GI in the literature (second column), compiled into 15 distinct categories of GI elements (first column) used in this study.
From: Towards the intentional multifunctionality of urban green infrastructure: a paradox of choice?

The total (last column) represents the number of the 26 listed studies that mention the term. Vertical dashed lines divide the years of study.