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Table 1 Live-tree carbon (C) ranges and uncertainty for northwest Oregon (NWOR)

From: Estimates of live-tree carbon stores in the Pacific Northwest are sensitive to model selection

Positive correlation Trees 3 to 66 cm diameter at breast height (DBH)
  Approach 1: No corrections Approach 2: Developmental DBH range Approach 3: With corrections
Species Minimum Maximum Uncertainty Minimum Maximum Uncertainty Minimum Maximum Uncertainty
  Tg C Tg C % of midpoint Tg C Tg C % of midpoint Tg C Tg C % of midpoint
Picea sitchensis 1.54 4.75 51 1.53 4.13 46 1.55 4.39 50
Pseudotsuga menziesii 9.56 455.32 96 31.26 70.40 38 18.57 135.57 76
Tsuga heterophylla 10.54 32.11 51 11.40 26.33 40 10.99 30.57 47
Acer macrophyllum 1.48 3.12 36 1.92 2.76 18 1.83 3.13 26
Alnus rubra 2.40 16.19 75 10.13 15.59 20 2.98 19.40 73
NWOR total 25.53 512.21 91 56.43 119.19 36 35.92 193.26 68
Negative correlation Trees 3 to 66 cm diameter at breast height (DBH)
  Approach 1: No corrections Approach 2: Developmental DBH range Approach 3: With corrections
Species Minimum Maximum Uncertainty Minimum Maximum Uncertainty Minimum Maximum Uncertainty
  Tg C Tg C % of midpoint Tg C Tg C % of midpoint Tg C Tg C % of midpoint
Picea sitchensis 2.26 3.61 23 1.93 3.37 27 2.13 3.57 25
Pseudotsuga menziesii 28.30 215.23 77 38.18 60.68 23 38.47 98.05 44
Tsuga heterophylla 15.58 23.97 21 14.07 21.08 20 14.93 23.92 23
Acer macrophyllum 1.90 2.70 17 2.08 2.63 11 2.16 2.78 13
Alnus rubra 5.10 14.40 48 11.85 14.08 9 7.78 14.40 30
NWOR total 53.05 259.91 66 68.11 101.83 20 65.48 142.73 37
  1. Note: Results of applying species tree total prediction envelopes to the Forest Inventory and Analysis database for NWOR. Uncertainty is half of the carbon range, expressed as a percentage of the range midpoint.
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Carbon Balance and Management

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