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• • <br />-3- <br />Summarize the Transect in this Manner: <br />1. To find the average diameter of the stand, divide the sum of diameters <br />by the number of shrubs measured. (See exhibit 2.) <br />2. Average spacing is found by dividing the total distance by the number of <br />shrubs sampled. (See exhibit 2.) <br />3. After running the zig-zag transect and recording data on the form <br />(exhibit I), total the column for spacing and divide the number of <br />plants sampled to get the average spacing. Enter this in the block for <br />average spacing. <br />4. Repeat this procedure for the crown diameter (in feet) and enter the <br />average crown diameter in the space provided on exhibit 1. (Also see <br />sample exhibit 2.) <br />5. To find percent of canopy cover, ref et to exhibit 3. <br />Locate the average spacing on the Ieft side of the graph. Now locate <br />the average crown diameter in feet at the top of the graph. Read down <br />from the top to where the average spacing line intersects the average <br />diameter Line. Read diagonally to the right for the percent of canopy <br />cover. <br />C Example pl - To determine the canopy cover, use the information from <br />Exhibit N2 under the summary. The average spacing of 10.2 feet and <br />average diameter of 4.0 feet will be used as an example. <br />Locate 10.2 on the left side of the chart (Exhibit N3) and 9.0 at the <br />top of the chart. Draw an imaginary line horizontally from 10.2 and <br />down fmm 4.0. Where these lines intersect, interpolate between the <br />diagonal lines 10 and 15~. The percent canopy cover would be about <br />I2.5 e. <br />Example b2 -Another example crould be if you measured an average spacing <br />of 9 feet and an average crown diameter of 4 feet. Locate the 9 feet on <br />the left side of the chart and the 4 feet at the top of the chart. <br />Where these two lines intersect, read diagonally to the right along the <br />15~ canopy line. <br />6. For a second method for determining percent canopy cover, refer to <br />Exhibit N4. This is a nomograph and using the example of 9 foot spacing <br />and 4 foot crown diameter, locate 9 feet on the right side and 4 feet on <br />the left side and with a straight edge read the percent canopy cover in <br />the middle of the nomograph. The percent canopy cover is 150. ' <br />L <br />