Abstract
The article studies the adaptation mechanism of the spread of Acer negundo L. using the example of habitats in the Central and Karasye-Ozersky forest parks. Lighting parameters in different parts of the crown of Acer negundo in virginal individuals, as well as the ability to intercept light, were studied. The percentage of light interception by the entire crown is 68.26% and 55.05% for Acer negundo habitats, respectively. Most of the set of lighting parameters correlate with each other to varying degrees, but their correlation with crown heights and diameters was not found. Lighting in the middle of the crown and under the crown is significantly less for habitats in Central Park, which is confirmed by analysis using the Mann-Whitney test, and the interception of light by both the upper half of the crown and the entire crown of trees in a given habitat is significantly greater. Differences in light interception values may be associated with differences in the parameters of tree crowns, possibly with a significant difference in heights. The tendency of the “aggressor” species to seize territory continues to this day, and this situation is typical for many regions of Russia, therefore it is necessary to monitor the state of ecosystems.
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