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Olga V Churakova (Sidorova)
Sebastian, Lienert
Galina, Timofeeva
Rolf, Siegwolf
John, Roden
Fortunat, Joos
Matthias, Saurer
2021-08-13T09:36:36Z
2021-08-13T09:36:36Z
2020
Olga V Churakova (Sidorova). Measured and modelled source water δ18O based on tree-ring cellulose of larch and pine trees from the permafrost zone [Текст] / Olga V Churakova (Sidorova), Lienert Sebastian, Timofeeva Galina, Siegwolf Rolf, Roden John, Joos Fortunat, Saurer Matthias // iForest. — 2020. — Т. 13. — С. 224-229
19717458
https://iforest.sisef.org/abstract/?id=ifor3212-013
https://elib.sfu-kras.ru/handle/2311/143337
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
mechanistic models that quantify physical and biochemical fractionation processes, leading to oxygen isotope variation (δ18O) in plant organic matter. These models allowed us to investigate the influence of a variety of climatic factors on tree-ring cellulose from two dominant species: Larix cajanderi Mayr. from northeastern Yakutia (69° 22′ N, 148° 25′ E, ~ 250 m a.s.l.) and Pinus sylvestris L. from Central Yakutia (62°14′ N, 129°37′ E, ~ 220 m a.s.l.). The climate of the region is highly continental with short growing seasons, low amount of precipitation and these forest ecosystems are growing on permafrost, which in turn impact the water cycle and climate variation in the δ18O of source water. We compared outputs of the Land surface Processes and eXchanges (LPX-Bern v. 1.3), and Roden-Lin-Ehleringer (RLE) models for the common period from 1945 to 2004. Based on our findings, trees from northeastern and central Yakutia may have access to additional thawed permafrost water during dry summer periods. Owing to differences in the soil structure, active thaw soil depth and root systems of trees at two Siberian sites, Larix cajanderi Mayr. trees can access water not more than from 50 cm depth, in contrast to Pinus sylvestris L. in Central Yakutia which can acquire water from up to 80 cm soil depth. The results enhance our understanding of the growth and survival of the trees in this extreme environment.
Conifers
Climate
Drought
Permafrost Thaw Depth
Siberia
δ18O of
Source Water
Measured and modelled source water δ18O based on tree-ring cellulose of larch and pine trees from the permafrost zone
Journal Article
Published Journal Article
224-229
2021-08-13T09:36:36Z
10.3832/ifor3212-013
Институт экологии и географии
Лаборатория биогеохимии экосистем
iForest
Q2
Q3


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