What do maple trees look like in autumn?

All leaves contain green chlorophyll. Trees use chlorophyll to capture light energy and store it in the form of chemicals such as sugar with the help of other substances in leaves. In addition to chlorophyll, many leaves also contain other pigments such as carotene, yellow pigment and red pigment.

Although these pigments can't carry out photosynthesis like chlorophyll, some of them can transfer the captured light energy to chlorophyll. In spring and summer, the content of chlorophyll in leaves is much richer than other pigments, so the leaves show the green color of chlorophyll, while the colors of other pigments are invisible.

Extended data:

The reason why maple leaves turn red

Leaves contain a lot of chlorophyll, so the color is green. In autumn, the weather gets cold, the growth rate of trees slows down, and the chlorophyll in leaves is gradually decreasing. Finally, only lutein is left, and the leaves turn yellow. Maple leaf contains a special substance-anthocyanin, which is just the opposite of chlorophyll. As the weather turns cold, the number gradually increases, making the maple leaves turn red. ? [3]?