Caitlyn, Matt, Tessa and Josh

Why we are Measuring trees We are measuring trees to find out

how the long it takes for the tree to grow.

From this information scientists can calculate how much carbon dioxide is absorbed by different species of trees in different parts of the world.

How do we measure the treeStep 1: We first find a suitable tree.

We don’t want to use trees that are on a lean or that have two or more trunks .

It also has to be in full sun, Or not shaded by other trees.

How do we measure the treeStep 2: When we have found a tree, we take

a nail and a number tag and hammer it into the tree a few centimetres. This identification tag assists with data collection.

How do we measure the treeStep 3: We measure 1.3

meters from the ground up and mark it with a texta. This is where the metal band, called a dendrometer, will be attached.

How do we measure the treeStep 4: We put the metal

band around the tree and loop it into the belt . Cut off the excess metal tail. We make two holes in it for the spring . Which allows it to stretch with the tree when it grows.

How do we measure the treeStep 5: We now measure

the trees growth using a tool called a dendrometer. Digital calipers measure the gap between two sections of the metal band. We will take at least two measurements in spring and two in autumn.