Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.1016/j.dendro.2021.125842
Ключевые слова: climate, competition, drought, forest-steppe, iadf
Аннотация: Climate change affects forest dynamics with potential consequences for essential ecosystem services. The retrospective analysis of secondary growth unveils the effect of climate on forests. However, most tree-ring studies focus on dominant trees, and less is known about the climatic response of their neighbor suppressed trees. We eПоказать полностьюvaluated the influence of tree social status (dominant/suppressed) on climate response in Pinus sylvestris L. trees from two sites with contrasting water availability conditions in the forest-steppe ecotone in southern Siberia. Tree-ring width and intra-annual density fluctuations (IADFs) were used as proxies. Late spring to early summer conditions were the main climate drivers in both tree social status, but the climate response of suppressed trees was stronger and had a longer time window (May-June). IADFs’ occurrence was controlled by temperature and its frequency was modulated by local conditions, being more common at the dry site, with tree status just marginally significant. Our results suggest that under the projected warmer and drier climate, suppressed trees in southern Siberia will be prone to increased water shortage, leading to possible higher mortality of more sensitive suppressed trees, with potential consequences for carbon sequestration in the forest-steppe ecosystems in southern Siberia. © 2021 Elsevier GmbH
Журнал: Dendrochronologia
Выпуск журнала: Vol. 67
Номера страниц: 125842
ISSN журнала: 11257865
Издатель: Elsevier GmbH