[The intensity of phytodetrite decomposition in Larch Forest of the permafrost zone in central Siberia].
Based on the results of long-term investigations, quantitative assessment ofphytodetrite mineralization rates is provided. Their role in the biological cycle of larch stands growing in the permafrost zone of Central Evenkia is discussed. It is demonstrated that their destruction in the subshrub-sphagnum and cowberry-green moss larch stands is extremely slow, the plant litter contains the most cecalcitrant organic matter demonstrating the lowest decomposition coefficient of 0.03-0.04 year(-1), whereas fresh components of the plant litter have 3- to 4-fold higher values. An insignificant input of N and C from the analyzed mortmass to the soil has been registered. It has been revealed that the changes in N and C in the decomposition components are closely related to the quantitative dynamics (biomass) of microorganisms, such as hydrolytics and, especially, micromicetes.
S G
SG
Prokushkin
A S
AS
Prokushkin
N D
ND
Sorokin
D018533:Biomass; D017753:Ecosystem; D065928:Forests; D028221:Larix / Q000737:chemistry / Q000378:metabolism; D065946:Permafrost / Q000382:microbiology*; D018515:Plant Leaves / Q000378:metabolism / Q000382:microbiology; D012800:Siberia; D012987:Soil / Q000737:chemistry; D044003:Sphagnopsida / Q000378:metabolism
D012987:Soil