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How Do Trees Survive Winter Without Freezing Solid?
树木如何在寒冬中避免被冻成冰棍？
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Trees avoid freezing damage by converting starches into sugars, lowering the freezing point of sap like antifreeze.
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Cell walls thicken and become more flexible, preventing ice crystals from puncturing membranes.
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Water moves out of living cells into intercellular spaces, where freezing causes less harm.
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Deciduous trees shed leaves to reduce water loss and stop photosynthesis until spring returns.
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Evergreens retain needles coated in waxy cuticles that slow evaporation and resist cold drying winds.
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Some species produce special proteins that inhibit ice nucleation—stopping crystals from forming inside cells.
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Bark insulates inner tissues, while dormant buds seal themselves with protective scales and resins.
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Roots stay active just below the frost line, absorbing limited water when soil isn’t fully frozen.
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Maple trees concentrate sugar in early spring, enabling sap collection for syrup before full thaw.
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Climate change disrupts these adaptations, causing premature budding and increased winter injury risk.