The dynamics of plant litter and some properties of forest floor during postagrogenic reforestation in the conditions of southern taiga

Abstract

A comparative description of the structural and functional organization of plant litter and forest floor in the course of natural postagrogenic reforestation in the chronory series of ecosystems for 12, 40 and 100 years is given. As the age of the stand increases, an increase in the total reserves and diversity of litter types, a decrease in the proportion of easily decomposable components, and a decrease in their pH and ash content are found. The change of ground cover is accompanied by the replacement of grass cover with grass-shrub, which indicates a decrease in the trophicity of ecosystems. The characteristics of the litter are adequately reflected by the composition of the ground cover. As the stand is restored, a regular decrease in the decomposition intensity of the ground detritus and the speed of the biological cycle occurs. Spatial differentiation of litter types serves as a trigger for the subsequent divergence of soil organic profiles.

References

1. Alcaniz М., Outeiro L., Francos М., Ubeda X. Effects of prescribed fires on soil properties: A review Original Research Article I I Sci. Total Environ. 2018. Vol. 613—614.

2. Francos M., Ubeda X., Pereira P., Alcaniz M. Long-term impact of wildfire on soils exposed to different fire severities // Sci. Total Environ. 2018. Vol. 615.

3. Gupta S. das, De Luca T.H. Short-term changes in belowground C, N stocks in recently clear felled Sitka spruce plantations on podzolic soils of North Wales // Forest Ecol. Manag. 2012. Vol. 281.

4. Landolt E. Okologische Zeigerwerts zur Sweizer Flora. Zurich, 1977. Vol. 64.

5. Ryan K.C. Dynamic interaction between forest structure and fire behavior in boreal ecosystems I I Silva fenn. 2002. N 1.