THE HEAT PROVISION OF VEGETATION PERIOD OF WOODY PLANTS ON THE TERRITORY OF NIZHNEVARTOVSK, KHANTY-MANSI AUTONOMOUS OKRUG

Plants in urban area are exposed to anthropogenic environmental factors, as a result of which photosynthesis processes are slowed down, growth and development are disrupted, nutrition deteriorates, damage to leaves and fruits is observed, life of plants is reduced. Climate change in the urban ecosystem causes disruption in the dynamics of plant development stages, there is a shift of phenological phases or the imposition of one phase on another. The sum of active temperatures above 10 °C (by F.F. Davitaya method) is calculated on the territory of Nizhnevartovsk region to determine the heat provision of the vegetation period of some woody plants.