Abstract
The forest floor (O horizon) is a major pool of organic matter in many forests, comprised of a wide range of materials that vary in chemistry and morphology. The processing of fresh detritus progresses with gradual degradation under the influence of biotic and abiotic factors, leading to decreasing particle size and carbon:nitrogen ratios. I used multiple regression models of the dynamics of litter input and processing through the litter layer (Ol or Oi) into the fermented (Of or Oe) layer using experimental data from beneath six tree species. The carbon contained in annual litterfall inputs equaled 20– 26% of the total forest floor C content in conifer plots, compared with 48 to 55% in the aspen and birch plots. This material remains in the Ol layer for 2 to 12 months. The Of layer comprises 47 to 85% of the total C content of the forest floor, with residence times of 0.5 to 5 years.
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Mukhortova, L. (2005). The Transformation of Plant Residues Under Different Tree Species in the Siberian Afforestation Experiment. In: Binkley, D., Menyailo, O. (eds) Tree Species Effects on Soils: Implications for Global Change. NATO Science Series IV: Earth and Environmental Sciences, vol 55. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3447-4_20
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DOI: https://doi.org/10.1007/1-4020-3447-4_20
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