Why doesn't the tree

Usually the higher the tree, the smaller the leaf, so what is the height limit for the tree?

Two scientists Kaare Jensen of Harvard University and Maciej Zwienniecki of the University of California compared more than 1925 acres of plants, with leaves ranging from a few millimeters to more than 1m. They found that the leaves of low trees had the most diverse sizes.

Is this tree big enough?

Jensen said the cause of this phenomenon lies in the 'circulatory' system of plants. The sugar produced on leaves is diffused through a tubular cell system, called a libe. The amount of sugar increases as it moves and so the larger the leaves are, the faster they reach the whole body. However, the libe at the position of stalks, stems, stems and branches often plays a role as a cork. This is also the limit for the growth of leaves. The trunk height will also increase to the limit when leaves are small because the road can follow the stem down to the root, making the "bottleneck" bigger.

Jensen's calculations describe the relationship between the height of trees and leaves. When the tree is taller, large and small leaves all stop large to ensure the survival of the tree. And at a height of 100m, the upper and lower limits meet.

This is the reason why trees cannot be over 100m tall.