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Dryad

Parameters of leaf phenology for North American forests

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Dec 12, 2022 version files 16.19 MB

Abstract

Leaf phenology regulates multiple aspects of plant vital activities and provides feedback to climate change. Despite its importance, an effective parameterization method to predict continental-scale leaf phenology has been elusive. Here, we developed a new parameterization method using local climatic conditions instead of species or plant function types to calibrate the phenology parameters of forests. We provided the parameters of phenology include: the effective temperature threshold (TA) to determine spring phenology (i.e. start of the season; SOS); the critical heat threshold (SA) to determine SOS; the effective temperature threshold (TB) to determine autumn phenology (i.e. end of the season; EOS); the effective photoperiod threshold (Pstart) to determine EOS, and the critical chilling threshold (SB) to determine EOS.