U.M. Kotlyarevska, A.M. Bilous


Forest ecosystem is one of the largest reservoirs of carbon, which plays an important role in the global carbon cycle during the deposition and carbon emission. The data of forest management on deadwood stock and coarse woody debris on 3.5 thousand of forestry-biometric sections of forestry enterprises were used for the research. Alder stands within Ukrainian Polissya were researched. The recommendations of Intergovernmental Panel on Climate Change (IPCC) were used to determine the amount of deposited carbon. The area of alder stands in Ukrainian Polissya is almost 367.000 ha. Forest management has identified 145.000 mof deadwood in alder forests on the area over 13.000 ha, and, also, almost 41.000 mof coarse woody debris on the area of 4.000 ha. The average deadwood stock is 11.0 m3∙ha-1, and coarse woody debris – 10.2 m3∙hа-1 in alder forests, where deadwood and coarse woody debris is accounted. The fraction of deadwood stock relatively total stock of alder stands of Ukrainian Polissya with deadwood and coarse woody debris is 7.8 % and within the age group ranges from 6.8 % (almost ripe plantations) to 38.1 % (young). The data of deadwood mortmass and coarse woody debris in completely dry state and the carbon content of the biomass were given as a basis for determining the deposited carbon. The total amount of deposited carbon in wood detbris of alder forests of Ukrainian Polissya is 39.9 Gg C. The deposited carbon in deadwood mortmass in alder forests within the administrative regions ranged from 2.2 Mg C·ha-1 (Volyn region) to 3.0 Mg C ha-1 (Kyiv and Chernihiv regions). The least deposited carbon in coarse woody debris mortmass is concentrated in the forests of Sumy region – 1.7 Mg C·ha-1, the forests of Chernihiv region have the highest carbon index – 3.5 Mg C·ha-1. The total energy content in mortmass components (deadwood and coarse woody debris) of alder forests of Ukrainian Polissya is 1.43 PJ. The average energy stock in deadwood mortmass of alder stands within the administrative regions ranged from 79 GJ·ha-1 (Volyn region) to 107 GJ·ha-1 (Kyiv and Chernihiv region). In general, 39.9 Gg C is concentrated in woody debris in alder forests in Ukrainian Polissya. The total energy stock in coarse fragments of wood (dry and broken wood) is 1.43 PJ.


snags; logs; black alder; area; wood stock; inventory plot

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