2007-10-16 23:10:49 · 20 answers · asked by Anonymous in Environment ➔ Other - Environment
When you look through a section of a tree, you can work out the age of the tree by counting the number of concentric rings. There's one ring for every year of the trees life. Of course to find the age of the tree by this method you have to cut the tree down.
Here's an alternative and faster way to estimate the age of a tree. Take a tape and measure the girth (distance around the trunk) approximately 150cms. from the ground.
If the tree is growing close to other trees, and it has a tall straight trunk, it will have been struggling to grow up to the sunlight, so every 12mms. of girth equals one year of growth.
If the tree is standing on its own with plenty of side branches growing from the trunk, then every 25 mm. of girth equals one year of growth.
2007-10-17 19:04:21 · answer #1 · answered by Anonymous · 5⤊ 0⤋
Some trees are exogenous (they grow by adding bark to their trunks). These additions create new rings in their trunk. These rings NEED NOT correspond to a year cycle. But in the case of trees in temperate regions they usually correspond to the number of years the tree has been alive. And the age of the tree can be found out by counting rings (known as the science of dendrochronology).
Very few, if any, tropical trees can be accurately aged in this manner. Age determination is also impossible in endogenous trees.
2007-10-17 06:43:15 · answer #2 · answered by uber_mensch 1 · 3⤊ 0⤋
You don't have to cut a tree down or kill it, many tree farms take a bore sample similar to ice bore samples, you simply bore from one side of the tree to the other, reverse the gas drill and there is a nice neat 1/4 inch rod of tree history, just pull it out through the cener of the drill bit., plug the holes in the tree the tree heals quickly and is unharmed.
2007-10-17 12:02:26 · answer #3 · answered by groingo 4 · 3⤊ 0⤋
You don't need to cut it down to get it's age. Get a tree borer and take a couple of samples and then count the rings. It's a tool that is like a hollow pipe with a serrated edge to cut a small "hole" in the tree without killing it.
2007-10-17 11:54:30 · answer #4 · answered by Anonymous · 3⤊ 0⤋
yes u definitely can...but u have to cut down the tree to do so...u can tell the age by counting the annual rings..
2007-10-18 10:29:59 · answer #5 · answered by Anonymous · 0⤊ 2⤋
you kill it ,and cut a cross section, to count the rings
or drill into it but a very old tree needs a very long drill
2007-10-17 16:28:02 · answer #6 · answered by Anonymous · 3⤊ 0⤋
You can find the age of tree....by counting the rings on its bark when it is half cut...
2007-10-19 11:08:03 · answer #7 · answered by nikki 2 · 1⤊ 2⤋
you have to kill the tree, that is cut it down first, and than you can count the rings in the trunk of the tree, but that tree will not age anymore.
2007-10-17 09:27:51 · answer #8 · answered by Anonymous · 1⤊ 4⤋
cut the tree in between you can see the rings count the rings you can get the age how many rings you see that much years old tre
2007-10-17 06:15:14 · answer #9 · answered by Anonymous · 2⤊ 4⤋
Cut down the tree and count the no of rings .That's the age of the tree.But some trees don't having the rings.I don't know about that.
2007-10-17 09:01:37 · answer #10 · answered by kandesh k 1 · 1⤊ 5⤋