%0 Journal Article
%T SOIL AND FOREST BEDDING §³§°2 EMISSION IN DIFFERENT TYPES OF FOREST PHYTOCENOSIS
%A Iryna Vyshenska
%A Maryna Rudko
%J NaUKMA Research Papers. Biology and Ecology
%P 43-47
%@ 2663-0613
%R 10.18523/2617-4529.2018.43-47
%X The article presents the results of the study of carbon dioxide emission of forest litter and soil in two forest phytocoenoses of different types (coniferous pine and broadleaf oak forests). The study is aimed to measure and compare soil respiration and carbon dioxide emission from forest litter in broadleaf and conifer forests to assess the role of different forest phytocoenoses in the deposition of CO2 as an important greenhouse gas. The study of carbon dioxide emissions is conducted on two monitoring plots of 50 ¡Á 50 m size. The first plot (D1) is a moderately moistened oak forest, located in the floodplain of the river Siverka on the sod-podzolic glei area. The plot vegetation is represented by the association Convallario majaliQuercetum roboris Shevchyk & V. Sl. in Shevchyk & al. 96.

The second plot (D2) is represented by the association Dicrano-Pinetum Preising and Knapp 1942 (Dicrano-Pinion Union (Libbert 1933) and located in a pine forest formed by Pinus sylvestris artificial plantations. CO2 emission from soil and litter in oak forest amount£¿ to 22. 86 ¡À 2.42 mkmol §³§°2 £¿ m-2 £¿ min-1. The contribution of soil respiration is 17.48 ¡À 1.72 mkmol §³§°2 £¿ m-2 £¿ min-1.

The soil respiration rate in the pine forest is 27.28 ¡À 1.33 §³§°2 £¿ m-2 £¿ min-1, and the total emissions of the forest bedding amounts to 39.37 ¡À 2.04 mkmol §³§°2 £¿ m-2 £¿ min-1. A higher level of total carbon dioxide outflow is established in coniferous pine forest. The largest part of CO2 emissions in both types of forests has been found on soil respiration that is 76 % and 70 % of total emissions, respectively. Apparently, differences in carbon dioxide emissions of forest bedding and soil respiration of different phytocoenoses depend on temperature, humidity, content of organic matter in them, and the process of its decomposition. Overall, the study confirms the importance of monitoring the CO2 emission factor for forest bedding and soil respiration as indicators of the stability of forest ecosystem functioning in conditions of climate change.
%K forest bedding
%K CO2 emission
%K soil respiration
%K climatic factors
%K forest phytocenoses
%U http://nrpbe.ukma.edu.ua/article/view/152585