Maple leaf

The degree of redness of maple leaves is related to time, drought, pollution, especially the lack of nitrogen and other factors. The redness of maple leaves is actually the result of the pressure response of maple trees to nature. The reaction of turning red actually acts as a sunscreen, which allows the maple leaves to stay on the tree for a longer time, so that the tree can absorb more nutrients. The study found that the pressure of nutrition, especially the lack of nitrogen, makes maple leaves red earlier and more transparent.