Table 3 Average annual change (tC/ha/y) for aboveground live tree carbon by region (refer to Fig. 1 for regions) and forest type group
Region | Type groupa | Average annual change (tC/ha/y) | Number of paired plots |
|---|---|---|---|
Northeast | White/red/jack pine | 0.66 | 429 |
Spruce/fir | 0.65 | 973 | |
Oak/hickory | 0.79 | 2124 | |
Maple/beech/birch | 0.35 | 3518 | |
Northern Lake States | White/red/jack pine | 0.74 | 762 |
Spruce/fir | 0.35 | 1371 | |
Oak/hickory | 0.42 | 1395 | |
Elm/ash/cottonwood | 0.37 | 601 | |
Maple/beech/birch | 0.23 | 1789 | |
Aspen/birch | 0.45 | 1904 | |
South Central | Loblolly/shortleaf pine | 1.62 | 2972 |
Oak/pine | 0.64 | 760 | |
Oak/hickory | 0.43 | 3744 | |
Oak/gum/cypress | 0.82 | 814 | |
Elm/ash/cottonwood | 0.66 | 402 | |
Southeast | Longleaf/slash pine | 1.08 | 813 |
Loblolly/shortleaf pine | 1.51 | 2216 | |
Oak/pine | 0.58 | 766 | |
Oak/hickory | 0.73 | 2529 | |
Oak/gum/cypress | 0.70 | 947 | |
Central States | Oak/hickory | 0.37 | 2538 |
Elm/ash/cottonwood | 0.70 | 258 | |
Maple/beech/birch | 0.14 | 191 | |
Great Plains | Oak-hickory | 0.44 | 139 |
Rocky Mountain—North | Douglas-fir | 0.03 | 1009 |
Ponderosa pine | 0.34 | 275 | |
Fir/spruce/mountain hemlock | 0.04 | 863 | |
Lodgepole pine | − 0.66 | 456 | |
Rocky Mountain—South | Pinyon-juniper | 0.03 | 4399 |
Ponderosa pine | 0.23 | 598 | |
Fir-spruce-mountain hemlock | − 0.98 | 727 | |
Aspen-birch | − 0.75 | 504 | |
Woodland hardwoods | − 0.19 | 1006 | |
Pacific Northwest—East | Douglas-fir | 0.57 | 744 |
Ponderosa pine | 0.50 | 1238 | |
Fir/spruce/mountain hemlock | 0.54 | 801 | |
Lodgepole pine | 0.19 | 515 | |
Other western softwoods | 0.04 | 313 | |
Pacific Northwest—West | Douglas-fir | 2.26 | 1943 |
Fir/spruce/mountain hemlock | 1.07 | 467 | |
Hemlock/Sitka spruce | 1.03 | 460 | |
Alder/maple | 1.36 | 174 | |
Pacific Southwest | Ponderosa pine | 0.71 | 200 |
Fir/spruce/mountain hemlock | 0.34 | 198 | |
Other western softwoods | 0.15 | 174 | |
California mixed conifer | 0.57 | 749 | |
Western oak | 0.15 | 604 | |
Tanoak/laurel | 2.04 | 144 |