Vital structure of population Larix gmelinii in urban environment
G. Yu. MOROZOVA
Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences, Institute of Water and Ecology Problems Far Eastern Branch Russian Academy of Science, Khabarovsk, Russia
Keywords: Larix gmelinii, population, vitality, population quality, urban environment
Abstract
The questions of changes in the life status of Larix gmelinii along the gradient of urbanized ecotypes are considered on the basis of population analysis and morphometric approach. L. gmelinii growing under different conditions differed in a number of size and growth characteristics of photosynthetic activity. The maximum values were noted in plants growing in public gardens and on city streets under conditions of high insolation. The vitality structure of the populations of the species in the vegetative ontogenetic state changed from depressive to equilibrium, the population quality index changed from 0.2 to 0.333. When examining the landscaping of transport highways of the city, local populations of L. gmelinii in the generative ontogenetic state were of a prosperous type, the population quality index varied slightly from 0.47 to 0.49. The plasticity of the species, the high viability of L. gmelinii, due to resistance to air pollution, unpretentiousness to soil conditions of growth, transplantation, allow larch to be widely used for landscaping urban areas.
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