Forward Modeling Reveals Multidecadal Trends in Cambial Kinetics and Phenology at Treeline.

ABSTRACT: Significant alterations of cambial activity might be expected due to climate warming, leading to growing season extension and higher growth rates especially in cold-limited forests. However, assessment of climate-change-driven trends in intra-annual wood formation suffers from the lack of direct observations with a timespan exceeding a few years. We used the Vaganov-Shashkin process-based model to: (i) simulate daily resolved numbers of cambial and differentiating cells; and (ii) develop chronologies of the onset and termination of specific phases of cambial phenology during 1961-2017. We also determined the dominant climatic factor limiting cambial activity for each day. To asses intra-annual model validity, we used 8 years of direct xylogenesis monitoring from the treeline region of the

SUBMITTER: Tumajer J 

PROVIDER: S-EPMC7875878 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature