1. Главная
  2. Публикации
  3. Mixed temperature-moisture signal in δ18 o records of boreal conifers from the permafrost zone

Mixed temperature-moisture signal in δ18 o records of boreal conifers from the permafrost zone

Описание

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.3390/atmos12111416

Ключевые слова: air temperature, oxygen patterns, precipitation, subarctic, tree-ring cellulose, vapor pressure deficit

Аннотация: Global climatic changes have been observed for all natural biomes, with the greatest impact in the permafrost zone. The short series of direct observations of air temperature and precipitation from meteorological stations for this territory make it difficult to use them in studies of the impact of climate change on forest and foresПоказать полностьюt-tundra ecosystems, but only longer series of gridded data expand the temporal-spatial resolution of this analysis. We compared local and gridded air temperature, precipitation and vapor pressure deficit (VPD) data, analyzed the trends of their changes over the last century for three sites in the permafrost zone (YAK and TAY in Russia, and CAN in Canada), and estimated the effect of their variability on oxygen isotopes in the tree-ring cellulose (δ18 Ocell ) of three different species (Larix cajanderi Mayr, Larix gmelinii Rupr. Rupr and Picea glauca (Moench) Voss). Climate trend analysis showed strong changes after the 1980s, and even more pronounced from 2000 to 2020. We revealed that δ18 Ocell-YAK showed mixed signals of the July temperature (r = 0.49; p = 0.001), precipitation (r = −0.37; p = 0.02) and vapor pressure deficit (VPD) (r = 0.31; p = 0.02), while δ18 Ocell-CAN captured longer March–May (r = 0.37, p = 0.001) and July (r = 0.32, p < 0.05) temperature signals as well as spring VPD (r = 0.54, p = 0.001). The δ18 Ocell-TAY showed a significant correlation with air temperature in July (r = 0.23, p = 0.04) and VPD in March (r = −0.26, p = 0.03). The obtained eco-hydrological relationships indicate the importance of temperature and moisture to varying degrees, which can be explained by site-and species-specific differences. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Ссылки на полный текст

Издание

Журнал: Atmosphere

Выпуск журнала: Vol. 12, Is. 11

Номера страниц: 1416

ISSN журнала: 20734433

Издатель: MDPI

Персоны

  • Zharkov Mikhail S. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Fonti Marina V. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Trushkina Tatyana V. (Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia)
  • Barinov Valentin V. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Taynik Anna V. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Porter Trevor J. (Univ Toronto Mississauga, Dept Geog Geomat & Environm, Mississauga, ON, Canada)
  • Saurer Matthias (Swiss Fed Inst Forest Snow & Landscape Res WSL, CH-8903 Birmensdorf, Switzerland)
  • Churakova (Sidorova) Olga V. (Siberian Fed Univ, Krasnoyarsk 660041, Russia; Swiss Fed Inst Forest Snow & Landscape Res WSL, CH-8903 Birmensdorf, Switzerland)

Вхождение в базы данных