Laserfiche WebLink
Woody Plant Density Data Collection <br />• Woody plant density data will be collected at random locations on <br />reclaimed areas in conjunction with cover transects. All shrubs, <br />full or half, shall be counted within 100 centimeters on both sides <br />of the 25 meter cover transect (2 meter X 25 meter belt transect). <br />Stem count will be recorded by species and reported as stems per <br />acre. No shrub height measurements will be taken. <br />Species Diversity <br />Relative cover percentages calculated from reclaimed areas cover <br />transects will be used to determine success of diversity criteria <br />later described. <br />Sample Adequacy <br />Sample adequacy calculations for reference and reclaimed area <br />• cover, production and woody plant density sampling will utilize one <br />of the following formulas. The following formula will be used for <br />reference and reclaimed area sampling when hypothesis testing is <br />not required. <br />N~= tzsz / (dx)x <br />Where: Nm =Minimum number of samples required <br />s2 =Sample variance <br />d =Precision (.10) <br />x =Sample mean <br />t =The (a=.10) t-table value for a single tailed <br />t-test with (n-1) degrees of freedom <br />14-21 (Retype 12/16196) <br />