Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.3390/f11101103

Ключевые слова: drought, iwue, larch, permafrost, precipitation, russian altai, temperature, vapor pressure deficit

Аннотация: A strong increase in the mean annual air temperature during the past 50 years by up to 0.54◦C was recorded in the Altai region (45◦–52◦ N; 84◦–99◦ E) compared to the global value of 0.07◦C over the period 1901–2008. The impact of the climatic changes on the hydrology are complex in these mountainous forest ecosystems and not fully understood. We aim to reveal differences in the intrinsic water-use efficiencies (iWUE) strategy by larch (Larix sibirica Ledeb.) derived from stable carbon isotopes at contrasting sites, ranging from the steppe (Ersin, Chadan) to high-elevation (Mongun, Koksu) sites of the Altai over the past century. The iWUE trends increased rapidly for all study sites except Chadan, where a decreasing trend after 2010 has been observed. This decline can be related to increased amount of precipitation compared to increased drought at the other sites. In general, the iWUE is increased up to 14% (1985–2019 compared to 1919–1984), which is lower compared to other studies across the globe likely due to harsh climatic conditions. Vapor pressure deficit and maximal air temperature are impacting Siberian larch significantly and affecting their iWUE differently at the high-elevated and steppe sites of the Altai over the past century. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Журнал: Forests

Выпуск журнала: Vol. 11, Is. 10

Номера страниц: 1-11

ISSN журнала: 19994907

Издатель: MDPI AG

• Churakova (Sidorova) Olga V. (Siberian Fed Univ, Inst Ecol & Geog, Lab Ecosyst Biogeochem, Svobodniy Pr 79, Krasnoyarsk 660041, Russia; Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Dynam, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland)
• Fonti Marina V. (Siberian Fed Univ, Inst Ecol & Geog, Lab Ecosyst Biogeochem, Svobodniy Pr 79, Krasnoyarsk 660041, Russia; Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Dynam, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland)
• Siegwolf Rolf T. W. (Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Dynam, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland)
• Saurer Matthias (Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Dynam, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland)
• Myglan Vladimir S. (Siberian Fed Univ, Inst Humanities, Siberian Dendrochronol Lab, Svobodniy Pr 79, Krasnoyarsk 660041, Russia)

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