How height are the trees?

George Koch, a researcher at the University of Arizona in Flagstaff, USA, measured the tallest trees in the world in redwood forests (scientific name Sequoia sempervirens - photos) Humboldt in California, to understand how life is. on the top floors.

They found that despite the distance from the ground, the tops of the leaves could still get enough water, so they survived regular droughts. Difficulties in raising water are the main reason for limiting the height of trees.

For redwood trees, the obstruction from the attraction of gravity and friction between the water and the conductors has made the flow impossible to pull higher than 122-130m. From here the researchers have also found that the theoretical height limit of trees is 130m, which is equivalent to a 35-storey building.

In fact, one has discovered a sequoia sempervirens with a height of 112.7 m, but this tree is over 2,000 years old and past events such as drought, wind and lightning may have prevented their growth.

NGUYEN SINH