Recovery оf Soil Macrofauna and Litter Properties in Post-Agrogenic Soils of Spruce Forests of the Smolensk Lakeland National ParkстатьяПереводИсследовательская статья
Статья опубликована в журнале из списка Web of Science и/или Scopus
Аннотация:In the Smolensk Lakeland National Park (western part of the Russia), recovery of large soil invertebrates (macrofauna) associated with changes in litter properties during natural spruce reforestation on post-agrogenic weakly acid sandy/silty loam soils was studied. The work is based on the data of the study of the chronosequence including the following stages: E0, young fallows and agrocenosis; E1, perennial meadows; E2, young birch forests of 10-30 years of age; E3, middle-aged birch forests (36-64 years old) with spruce dominance in the lower woody layer, E4, forests with birch dominance (70-80 years old) and spruce emergence in the upper woody layer; E5, spruce-birch forests (80-100 years old) with the formation of window mosaics due to birch loss; E6, conditionally rooted spruce forests aged 90-100 years with pronounced window mosaics and wind-soil complexes. It is shown that litter stocls, its carbon content and thickness increase in the chronosequence. In agrocenoses and young fallows, the organogenic Oi-horizon is fragmentary and is represented by the fall of current years. Litter consisting of material in an intermediate state of decomposition (Oe horizon) appears in young birch forests. Organic material in an advanced state of decomposition (Oa horizon) is characteristic of middle and late stages of spruce reforestation. The diversity of invertebrates inhabiting the litter increases naturally. The diversity of epigeic macrofauna increases: earthworms appear, the number and biomass of other saprophages (bipedal millipedes, molluscs) and predators (spiders, beetles, labiopods) increase. A positive correlation between the thickness of Oa-horizon and biomass of epi-endogeic earthworms was established.
