“…Ongoing on 220 million hectares worldwide, the abandonment of agricultural lands is an important phenomenon triggered by both ecological and socioeconomic causes (Beilin et al, ; Prishchepov, Müller, Dubinin, Baumann, & Radeloff, ). Massive cropland abandonment in Russian Federation was caused by the collapse of the farming system in early 1990s (Henebry, ; Kurganova, Lopes de Gerenyu, & Kuzyakov, ; Kurganova, Lopes de Gerenyu, Six, & Kuzyakov, ; Lyuri, Goryachkin, Karavaeva, Denisenko, & Nefedova, ). Recently, about 40 million hectares (or ~50% of the currently cultivation area) still remain unused (ROSSTAT, ).…”