For example, if you weigh 200 pounds, a 5 percent weight loss equals 10 pounds, bringing your weight down to 190 pounds. While this weight may still be in the overweight or obese range, this modest weight loss can decrease your risk factors for chronic diseases related to obesity.
Tree basal area. Tree Basal Area (TBA) is the cross-sectional area (over the bark) at breast height (1.3 metres above the ground) measured in metres squared (m2). TBA can be used to estimate tree volumes and stand competition.ree Basal Area (TBA) is the cross-sectional area (over the bark) at breast height (1.3 metres above the ground) measured in metres squared (m2).
Figure 1. An illustration of the basal area per acre. The basal area per tree is the cross-sectional area of each tree at breast height(the black ellipses). Basal area per acre would be the sum of these cross-sectional areas for all tree in an acre.BH is the diameter at breast height in centimeters. is the constant 3.1415. Basal area per acre is the sum of all the basal area per tree in the acre. Basal area per acre or hectare is a standard measure of the size-density relationship in a stand.