Traditional Culture Encyclopedia - The 24 Solar Terms - Why do maple leaves turn red after the first frost? Why do maple leaves turn red after the first frost?

Why do maple leaves turn red after the first frost? Why do maple leaves turn red after the first frost?

1. Maple leaves turn red after the first frost: after the first frost, anthocyanins in maple trees increase, and chlorophyll is destroyed (orange-red pigment appears) due to the temperature drop, so the green leaves turn into red leaves.

2. Cold weather begins with the first frost, which is the last solar term in autumn, reflecting the change of temperature and the transition from autumn to winter, which means the coming of winter.