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Abstract <p>The seasonal rhythm of development of <i>Acer platanoides</i> was analyzed in the South Ural Botanical Garden in Ufa for the period 1956–1967 and 2013–2024 for seven phenophases. The average long-term dates of the onset of seasonal development phases, the earliest and latest dates for observation periods, the sums of positive and effective temperatures, as well as the sums of precipitation occurring on the date of the onset of the development phase were determined. It has been established that the dates of the onset of the initial phenological phases of Norway maple have a positive, and the autumn phases of development have a negative relationship with climatic parameters: the sum of effective temperatures and the sum of precipitation. Most of the phases of seasonal development of Norway maple have shifted to earlier dates in recent years compared to the mid-20th century. Vegetation now begins 9 days earlier, and flowering 5 days earlier, while fruit ripening according to average dates occurs 4 days later. The average annual temperature in the study region in the 21st century increased from 3 to 4.7°C, and precipitation in the summer and early autumn periods became significantly less. Climate warming is confirmed by the change in climate zone: in the middle of the 20th century it was zone 2 (absolute minimum from –40.0 to –45.6°С), now it is zone 3 (from –34.4 to –40.0°С). The shift in vegetation periods under climate change conditions indicates high phenological plasticity <i>Acer platanoides</i>.</p>

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Dynamics of the Seasonal Rhythm of Development of the North Maple (Acer platanoides L.) in the Bashkir Central Region in Connection with Long-Term Climate Changes

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • N. A. Ryazanova,
  • N. V. Polyakova,
  • Z. H. Shigapov

摘要

Abstract

The seasonal rhythm of development of Acer platanoides was analyzed in the South Ural Botanical Garden in Ufa for the period 1956–1967 and 2013–2024 for seven phenophases. The average long-term dates of the onset of seasonal development phases, the earliest and latest dates for observation periods, the sums of positive and effective temperatures, as well as the sums of precipitation occurring on the date of the onset of the development phase were determined. It has been established that the dates of the onset of the initial phenological phases of Norway maple have a positive, and the autumn phases of development have a negative relationship with climatic parameters: the sum of effective temperatures and the sum of precipitation. Most of the phases of seasonal development of Norway maple have shifted to earlier dates in recent years compared to the mid-20th century. Vegetation now begins 9 days earlier, and flowering 5 days earlier, while fruit ripening according to average dates occurs 4 days later. The average annual temperature in the study region in the 21st century increased from 3 to 4.7°C, and precipitation in the summer and early autumn periods became significantly less. Climate warming is confirmed by the change in climate zone: in the middle of the 20th century it was zone 2 (absolute minimum from –40.0 to –45.6°С), now it is zone 3 (from –34.4 to –40.0°С). The shift in vegetation periods under climate change conditions indicates high phenological plasticity Acer platanoides.