Enhanced effect of warming on the leaf-onset date of boreal deciduous broadleaf forest

Key Points

• Leaf-onset dates significantly advance with increasing temperatures in boreal deciduous trees.
• A crucial metric reported shows a shift of leaf-onset dates by 5 days per degree Celsius of warming.
• Observational analysis across boreal forests indicates that warmer temperatures impact deciduous species.
• Climate warming may alter the timing of growth cycles, affecting ecosystem dynamics and services.