Fig. 6From: Nature-based recreation for the elderly in urban areas: assessing opportunities and demand as planning supportNBR potential and human inputs for elderly people. The top subgraph shows the NBR potential. The value is normalized to the 0–1 range, where 0 indicates the lowest potential and 1 the highest potential. The bottom subgraph shows the human-input value, which is ranked based on a cross-tabulation of the facility- and proximity-related inputs. The colour ramp shows the range from the lowest (dark) to the highest (light) human inputsBack to article page