Data collection

Data collection - the bottom of the stick corresponding to...

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Mike Kempton Chelsey Dator Environmental Sci. 9/19/05 How to Collect Data We must take into consideration the different types of characteristics the trees hold, and these characteristics are the data that we will be collecting. The data we must collect is the diameter at Breast Height (DBH), the species, the height, the trees health, and the undergrowth. To find the DBH, you must use a tree and Log Scale Stick. First, you must make sure that the side of the stick facing you is labeled. Next, hold the stick straight out(perpendicular) to the tree. The stick has to be 25 inches from your eye, and 4 ½ inches from the ground. Now, “put the left edge of the scale stick in the left edge of the tree”, and only move your eyes while doing so. That number is your DBH. To find the height of the tree, you must use the tree and log scale stick again. “Hold the stick so that “Merrit Hypsometer” is facing you, stand 66 feet from the tree.” Hold the stick parallel to the tree trunk again. Hold the stick 25 inches from your eye, and
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Unformatted text preview: the bottom of the stick corresponding to the ground. Read the stick all the way to the top of the tree. This measurement will come cut in number in boards, and you must convert it to number of feet. There are 16 feet in one board. The next step is to find the species of the tree. In order to do this you must use your tree identification guides or your field notebooks. You may use further references if you can not identify a tree using your tree identification guides or field notebooks. In identifying a trees health you must take into consideration the fact that there could be basal scars which reside from forest fires. You must also observe different types of funguses, insects, and any other damages the tree might have. The final step is to identify the undergrowth. We can identify shrubbery and herbaceous plants growing. We must split it up into percentages such as 0 to 25%, 26 to 50%, 51 to 75%, and 76 to 100% of undergrowth....
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