Fig. 5From: Effect of spring grass fires on vegetation patterns and soil quality in abandoned agricultural lands at local and landscape scales in Central European RussiaSpatiotemporal clusters of lands (polygons) affected by fire from 1986 to 2014. Clusters were calculated by the OPTICS algorithm with the following parameters: ≥ 3 fire events in 300 m and 1 year time unit; cluster size ≥ 10Back to article page