“…It contains contributions on sociocultural [25,[29][30][31][32], commercial [33][34][35] and self-supply [36,37] UA types, along with studies focusing on either varying or mixed UA types [38][39][40][41]. Comparing the scope of the studies in terms of focusing on technology-or nature-based UA, the majority of the papers deal with nature-based forms of UA [25,[29][30][31]36,39,40,42], while only three papers investigate technology-oriented types of UA [33,35,37] (see Figure 1). All in all, the case studies cover towns and cities all over the world and address a wide range of various types of UA, its impact and implementation dimensions, research objectives, and methodologies reflecting the interdisciplinarity and international research of UA.…”