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Wildfires occur in the Republic of Mari El (Russian Federation) from time to   time, that is why reforestation work is very important in the region. Some   risks arise in the course of forest reproduction at fire-sites. Wastelands   formation, May beetle outburst (Melolontha melolontha), fire recurrence are   the most typical risks. Predominance in the forests (sandy soil) of the   Republic of Mari El of Scots pine (Pinus sylvestris) determines regeneration   of this very species. Accelerated growth of pine in fire-sites is achievable   through artificial forest regeneration. The goal of our research is to study   the influence of different technologies of plantation establishment in   fire-sites on their development and productivity and assess possible risks   mitigation in establishment and cultivation of the plantations. Eight   different plots of planted Scots pine (Pinus sylvestris) were studied. These   plots are rectangular (Н-1, K-1, К-3, К-4, К-5), square (К-2) and spot   planting (Н-2, Н-3) plots. The initial density of the planted trees was   different in the plots; it was low (К-1, К-2, К-3), mean (К-4) and high (Н-1,   К-5). It was revealed that in the plots where trees were planted with high   initial density (more than 10000 trees per hectare) the risk of May beetle   outburst was reduced due to quick canopy closure (up to 3-4 years). Two-row   spot planting of Scots pine and leaving the wide inter-rows (Н-2, Н-3) makes   it possible to carry out the prevention measures and contributes to forest   environment preservation and natural regeneration of broadleaved species

Major risks and technologies of artificial forest regeneration in fire-sites of the Republic of Mari El