National Treasure Sir David Attenborough Explains How Tree Trunks Are Essential For Growth & Carbon Storage. See The Video & Summary.
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It’s easy to take trees for granted. We have them in our cities, towns and countryside. But sometimes we need to look at these everyday plants and appreciate what they do for us. They are major producers of oxygen, without which we can’t live; during photosynthesis they absorb carbon dioxide and they also act as a long term carbon sink. Trees and tree trunks are important to life.
In this video Sir David, explains the function of the tree trunk and much more .. and he does it better than any gardening presenter I’ve ever watched. My summary of the video content is below with the video at the end.
Tree Trunk Structure and Function
A tree trunk is an extraordinary piece of biological engineering.
It is packed tight with xylem, which is hundreds of metres of very thin tubing filled with water.
The water passing along those tubes creates a low rumbling sound.
The gurgling sound heard in the video is the water traveling up towards the leaves.
“A tree trunk is packed tight with xylem, which is hundreds of meters of very thin tubing filled with water.”
Sir David Attenborough
Transpiration and Nutrient Transport
Transpiration is the process where nutrients dissolved in water travel along the tubes.
It is particularly important in the spring for kick-starting growth.
“Transpiration is particularly important in spring when nutrients dissolved in water are needed to kick-start growth.”
Sir David Attenborough
Tree Rings and Growth Patterns
A section of a tree trunk shows a pattern of concentric rings, with each ring representing one year of growth.
The paler part of each ring indicates fast growth when conditions were good at the beginning of the year.
The darker part of each ring indicates slower growth towards the end of the year.
The width of the ring can indicate the weather conditions of a particular year.
“Each ring of a tree trunk represents one year of growth and can indicate the weather conditions during that year.”
Sir David Attenborough
Counting Rings to Determine Age
Counting the rings of a tree trunk or branch can determine its age.
For example, an oak branch section in the video took 25 years to grow, and a part of a trunk is 95 years old.
A tree can be a century or more in age.
“Counting the rings of a tree trunk or branch can determine its age.”
Sir David Attenborough
Importance of Trees in Carbon Storage
Trees play a vital role in storing carbon from the atmosphere.
Leaves absorb carbon dioxide from the atmosphere and store it in the trunk.
“Trees play a vital role in storing carbon from the atmosphere.”
No one has the knowledge or skills of explaining like Sir David Attenborough. A fascinating video.