EN
Decomposition in soil is crucial importance in biogeochemical cycling and ecosystem functioning, because soil organic carbon (especially in northern forest ecosystems) is large potential source of CO₂, a greenhouse gas. The stability of the stored carbon under changing climatic conditions has been the subject of recent concern due to the expected climate warming, which is predicted to be most pronounced in northern regions. Temperature is a primarily factor affecting on decomposition processes of organic matter in soils, so temperature response functions are central to models simulating the effects of global warming on the mineralisation of soil carbon pools. The relationship temperature-decomposition rate is complicated, because there are many factors which affect on, for example soil moisture, biogens access for microorganisms and other. There are important and very intensive studied recently problems. Also numerous studies have been specially devoted to soil biota, mainly soil microorganisms.