Heat requirement, not warming, governs the urban-rural disparity in spring phenology advancement (IMAGE)
Caption
Graphical abstract. On the left, rural vegetation: green-up advances slowly because the heat requirement — the accumulated warmth a plant must absorb before it breaks dormancy — changes little, and the spring phenology timeline is long. On the right, urban vegetation: the heat requirement falls further, so the same warming delivers leaf-out sooner and the timeline is short. Insets show green-up date against year for urban and rural vegetation and the magnitude of heat-requirement change for each. Graphical abstract of the published article, distributed by the journal with the pape.
Credit
He C., Wang X., Peñuelas J., et al., (2026). Heat requirement, not warming, governs the urban-rural disparity in spring phenology advancement. The Innovation 7(9), 101343. https://doi.org/10.1016/j.xinn.2026.101343
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