Features of Changes in Agroclimatic Indicators of the Udmurt Republic

The study is devoted to the analysis of the dynamics of the main agroclimatic indicators in Udmurtia. The aim of the work was to assess changes in some climate indicators of the territory of the Udmurt Republic used in forestry and agriculture. The studies were carried out using widespread generally accepted methods: statistical, computational and constructive. It was found that in recent decades (1961-2020) in the Udmurt Republic there was an increase in the average annual surface air temperature by 1.4 °C, the average annual tempera-ture of the warm period (April-October) by 1.0 °C and the cold period (November-March) by 2.6 °C. The share in the increase in the average long-term average annual surface air temperature of the cold and warm periods was 69 and 31 %, respectively. An increase in the duration of periods with air temperatures above 0, 5, 10 and 15 °C by 9, 10, 6 and 11 days, respectively (1971-2020) was revealed. The sum of average daily positive air temperatures for the period above 0 °C increased by 223.1 °C, for the period above 5 °C – by 239.5 °C, for the period above 10 °C – by 209.9 °C, for the period above 15 °C – by 262.8 °C on average in Udmurtia. An increase in the duration of the frost-free period by 7 days was noted. An increase in the amount of precipitation over the study period (1971-2020) by 30 mm was revealed. An analysis of the dynamics of the areas of forest-forming species revealed a decrease in the area of Siberian fir plantations and an increase in the area of small-leaved linden.