Open AccessEffect of atmospheric air pollution on local nitrogen cycles in the urban forest ecosystem
Author(s) -
О. В. Беднова,
В. Д. Кузнецов
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/316/1/012076
Subject(s) - nitrogen dioxide , environmental science , ecosystem , nitrogen , air pollution , forest ecology , pollution , abiotic component , air quality index , atmospheric sciences , microclimate , carbon dioxide , disturbance (geology) , decomposition , ecology , environmental chemistry , geography , chemistry , meteorology , geology , biology , paleontology , organic chemistry
In this study, it was shown that in the urban forests bordering highways local disturbances of the nitrogen cycle are observed. In some plots of such forests, zones with a high concentration of nitrogen dioxide may be formed. The mechanisms of this phenomenon were investigated. Using the method of passive dosimetry, nitrogen dioxide absorption rate was estimated at control points in the subcrown space. In the summer period, the light points and the temperature on the soil surface and at a height of 2 m were measured at the control points. It is shown that the formation of internal local zones with a high concentration of nitrogen dioxide in urban forests is regular: surface temperature inversions impede the vertical movement of air, and a decrease in illumination by forest subsurface in comparison with open areas reduces the rate of decomposition of nitrogen dioxide. The influence of these abiotic factors is ambiguous against the background of the transformation of the forest ecosystem during recreational impacts.