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Table 3 Total number of trees per plot broken down by species, mean tree age, mean basal canopy area (BCA), tree trunk basal diameter (TCD), and percent grass, sage, duff/litter, and bareground cover per m 2

From: Twentieth century carbon stock changes related to Piñon-Juniper expansion into a black sagebrush community

Plot    Live tree density Mean tree Mean tree BCA (m2) Mean TCD (cm) Mean grass cover (%) Mean sagebrush cover (%) Mean duff/litter cover (%) Mean bareground cover (%)
   (Stems ha-1) above Age (yrs)       
  Number of trees below        
HSC 133 4 (J saplings) NA NA NA 11.85 (0.43) 37.03 (0.95) NA 41.38
LD 1033 31 (30 P, 1 J) 51 (3) 4.2 (0.7) 10.64 (1.04) 11.97 (2.43) 25.62 (2.57) 27.60 (4.06) 31.98 (4.04)
HD 1400 42 (37 P, 5 J) 53 (2) 5.1(0.8) 13.70 (1.32) 2.71 (1.06) 14.16 (1.88) 53.84 (5.47) 27.08 (4.42)
PJD 100 30 (15 P, 3 J) 47 (1) 4.9 (2.5) 8.54 (1.55) 20.41 (2.32) 25.83 (2.25) 25.21(3.36) 24.58 (3.22)
  1. For the HSC plot duff/litter and bare ground estimates are combined and presented in the bareground column. Percent cover estimates do not add up to 100 because forbs and shrubs other than black sagebrush are not included. Values in brackets are ± 1 standard error of the mean. P = Pinus edulis, J = Juniperus osteosperma.