Scientific Reports of the National University of Life and Environmental Sciences of Ukraine

Peculiarities of formation of oxygen productivity of broadleaved stands in Kyiv region under diverse forest growth conditions

Roman Vasylyshyn, І. Lakyda, V. Hryb, М. Lakyda
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Abstract

The research presents the results of assessment of oxygen productivity of deciduous stands in Kyiv city and Kyiv region as one of the basic ecosystem functions of forest plant communities in urban conditions. Quantitative assessment of oxygen productivity is based on the use of a "semi-empirical" method of evaluation of net primary production, which considers it as an analogy to the annual increase in total productivity of live biomass (or total live biomass growth). In total, the assessment of oxygen productivity of forests in Kyiv region covers the forested area of over 75 thousand hectares in twenty-one type of forest growth conditions. We have established that deciduous forests in Kyiv region produce more than 4 million tons of oxygen annually, at the same time the mean oxygen productivity in the studied stands is more than 17 t·ha-1·year-1. Almost 75 % of these oxygen volumes are produced by hardwood stands. Peculiarities of formation of forests’ oxygen productivity in different types of forest growth conditions have been determined within this research. In particular, forest plant communities in fairly infertile conditions (1.98 million tons) account for almost 50% of oxygen produced, including more than 1 million tons of oxygen produced by stands in fresh fairly infertile conditions (C2). A significant influence of forest growth conditions type on the indices of intensity of oxygen productivity in the studied stands was established. The highest values of mean oxygen productivity are typical for plantations in fresh fertile and fairly fertile conditions – 26.9 and 23.2 t·ha-1·year-1, respectively. Net oxygen productivity in these types of forest growth conditions is 10.8 and 8.9 t·ha-1·year-1, respectively. The obtained results serve as an information basis for ecological monitoring of the impact of forest ecosystems of the region on the state of recreational potential in Kyiv region

Keywords

ecosystem functions, oxygen productivity, broadleaved forests of Kyiv region, type of forest growth conditions

Suggested citation
Vasylyshyn, R., Lakyda, І., Hryb, V., & Lakyda, М. (2022). Peculiarities of formation of oxygen productivity of broadleaved stands in Kyiv region under diverse forest growth conditions. Scientific Reports of the National University of Life and Environmental Sciences of Ukraine, 18(2). https://doi.org/10.31548/dopovidi2022.02.010
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