Effect of aerotechnogenic impact of pulp and paper production on the pigment complex of Scots pine
Section: Monitoring of natural and anthropogenically disturbed areas
Here we present the results of studying the effect of aerotechnogenic emissions of pulp and paper production of Mondi Syktyvkar JSC on the pigment system of Scots pine (Pinus sylvestris L.) needles in blueberry and lichen pine forests over a 25–year observation period. We conducted comparative analysis of the indicators of the pigment complex of the pine in background and impacted areas. In 1993––1995, aerotechnogenic pollution of the environment was 20–100 times higher in the area of strong impact compared to the background and had a negative impact on the Scots pine pigment complex. Pollutants were found to inhibit the synthesis of pigments. After the decrease in volume of industrial emissions in 2015 and 2018, several changes occurred in the pigment apparatus of pine needles in the impacted area. In view of a significant reduction in industrial emissions, chloroplasts demonstrated an increase in pigment content even in the area adjacent to the emission source. With a weakening technogenic impact (in the area of moderate contamination), the photosynthetic and respiration abilities of the needles do not undergo changes. This indicates that the basic processes of pine vital activity are stable, and its to the resistance to pollution.
Keywords: , pulp and paper industry, air pollution, pigments, needles, photosynthesis, respiration