Impact of climate change on productivity of ecosystems of the Polissya zone of the Ukraine

Results of the analysis proved that the net primary productivity has a strong connection with the solar insolation. The length of daylight and the level of solar radiation are the driving forces behind changes in growth of primary products, as floral forms are among the first indicators of changes in ecosystems due to global warming. The group of climatic components that have a moderate connection with the bioproductivity of ecosystems of the Polissya are derivatives of bioclimatic indicators related to air temperature, including annual temperature, seasonality, minimum temperature of the coldest month, and the average temperature of the coldest quarter. Seasonality and the annual variation of temperature affect bioproductive processes inversely: the productivity decreases with the increased temperature range between the warmest and the coldest periods of the year and in the middle of quarters.