Reversal in the drought stress response of the Scots pine forest ecosystem: Local soil water regime as a key to improving climate change resilience.

Autor:	Bogachev MI; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Gafurov AM; Kazan Federal University, 18 Kremlevskaya street, Kazan, Tatarstan, 420008, Russia., Iskandirov PY; Kazan Federal University, 18 Kremlevskaya street, Kazan, Tatarstan, 420008, Russia., Kaplun DI; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Kayumov AR; Kazan Federal University, 18 Kremlevskaya street, Kazan, Tatarstan, 420008, Russia., Lyanova AI; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Pyko NS; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Pyko SA; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Safonova AN; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Sinitca AM; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia., Usmanov BM; Kazan Federal University, 18 Kremlevskaya street, Kazan, Tatarstan, 420008, Russia., Tishin DV; St. Petersburg Electrotechnical University 'LETI', 5-F Professor Popov street, St. Petersburg, 197022, Russia.; Kazan Federal University, 18 Kremlevskaya street, Kazan, Tatarstan, 420008, Russia.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2023 Oct 29; Vol. 9 (11), pp. e21574. Date of Electronic Publication: 2023 Oct 29 (Print Publication: 2023).
DOI:	10.1016/j.heliyon.2023.e21574
Abstrakt:	In a changing climate, forest ecosystems have become increasingly vulnerable to continuously exacerbating heat and associated drought conditions. Climate stress resilience is governed by a complex interplay of global, regional, and local factors, with hydrological conditions being among the key players. We studied a Scots pine ( Pinus sylvestris L.) forest ecosystem located near the southern edge of the boreal ecotone, which is particularly subjected to frequent and prolonged droughts. By comparing the dendrochronological series of pines growing in apparently contrasting hydrological conditions ranging from the waterlogged peat bog area to the dry soil at the surrounding elevations, we investigated how the soil water regime affects the climate response and drought stress resilience of the forest ecosystem. We found that in the dry land area, a significant fraction of the trees were replaced after two major climate extremes: prolonged drought and extremely low winter temperatures. The latter has also been followed by a three- to ten-fold growth reduction of the trees that survived in the next year, whereas no similar effect has been observed in the peat bog area. Multi-scale detrended partial cross-correlation analysis (DPCCA) indicated that tree-ring width (TRW) was negatively correlated with spring and summer temperatures and positively correlated with the Palmer drought severity index (PDSI) for the same year. For the elevated dry land area, the above effect extends to interannual scales, indicating that prolonged heatwaves and associated droughts are among the factors that limit tree growth. In marked contrast, in the waterlogged peat bog area, a reversed tendency was observed, with prolonged dry periods as well as warmer springs and summers over several consecutive years, leading to increasing tree growth with a one- to three-year time lag. Altogether, our results indicate that the pessimal conditions of a warming climate could become favorable through the preservation of the soil water regime. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2023 The Author(s).)
Databáze:	MEDLINE
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