Tree-Ring Chronologies from the Upper Treeline in the Russian Altai Mountains Reveal Strong and Stable Summer Temperature Signals

Описание

Тип публикации: статья из журнала

Год издания: 2024

Идентификатор DOI: 10.3390/f15081402

Аннотация: <jats:p>Radial tree growth at high-elevation and high-latitude sites is predominantly controlled by changes in summer temperature. This relationship is, however, expected to weaken under projected global warming, which questions the reliability of tree-ring chronologies for climate reconstructions. Here, we examined the growth–climПоказать полностьюate response patterns of five tree-ring width (TRW) and maximum latewood density (MXD) chronologies of larch (Larix sibirica) from upper-treeline ecotones in the Altai Mountains, which is a key region for developing millennial-long dendroclimatic records in inner Eurasia. The TRW and MXD chronologies exhibited significant year-to-year coherency within and between the two parameters (p < 0.001). While TRW is mostly influenced by temperature changes during the first half of the growing season from June to July (r = 0.66), MXD is most strongly correlated with May–August temperatures (r = 0.73). All seasonal temperature signals are statistically significant at the 99% confidence level, temporally stable back to 1940 CE, the period with reliable instrumental measurements, and spatially representative for a vast area of inner Eurasia between northeastern Kazakhstan in the west, northern Mongolia in the east, southern Russia in the north and northwestern China in the south. Our findings demonstrate the paleoclimatic potential of TRW and especially MXD chronologies and reject any sign of the ´divergence problem´ at these high-elevation, mid-latitude larch sites.</jats:p>

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Издание

Журнал: Forests

Выпуск журнала: Т. 15, 8

Номера страниц: 1402

ISSN журнала: 19994907

Персоны

  • Kirdyanov Alexander V. (Institute of Ecology and Geography, Siberian Federal University, 79 Svobodnii, Krasnoyarsk 660041, Russia)
  • Arzac Alberto (Institute of Ecology and Geography, Siberian Federal University, 79 Svobodnii, Krasnoyarsk 660041, Russia)
  • Kirdyanova Alina A. (Institute of Earth Sciences, St. Petersburg State University, St. Petersburg 199034, Russia)
  • Arosio Tito (Department of Geography, University of Cambridge, Cambridge CB2 3EN, UK)
  • Ovchinnikov Dmitriy V. (Sukachev Institute of Forest SB RAS, Federal Research Center ‘Krasnoyarsk Science Center SB RAS', Akademgorodok, Krasnoyarsk 660036, Russia)
  • Ganyushkin Dmitry A. (Institute of Earth Sciences, St. Petersburg State University, St. Petersburg 199034, Russia)
  • Katjutin Paul N. (Botanical Institute of RAS, ul. Professor Popov 2, St. Petersburg 197022, Russia)
  • Myglan Vladimir S. (Institute of Ecology and Geography, Siberian Federal University, 79 Svobodnii, Krasnoyarsk 660041, Russia)
  • Nazarov Andrey N. (Institute of Ecology and Geography, Siberian Federal University, 79 Svobodnii, Krasnoyarsk 660041, Russia)
  • Slyusarenko Igor Y. (Institute of Archaeology and Ethnography SB RAS, Pr. Akademika Lavrentieva 17, Novosibirsk 630090, Russia)
  • Bebchuk Tatiana (Department of Geography, University of Cambridge, Cambridge CB2 3EN, UK)
  • Büntgen Ulf (Global Change Research Centre, 61300 Brno, Czech Republic)

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