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Table 6 Estimates of carbon stock change in the AGB, BGB and dead wood pools between 2002 and 2007 and 2009–2012 in the tall forest and regenerating forest group as defined by Wiser et al. (2011) and their alliances. Changes in stock values in bold differ significantly from zero. Plus-or-minus values are estimated 95% confidence intervals calculated using two methods; the first method is based solely on sampling variation between plots (CIs); and the second method combines the effects of sampling variation and prediction uncertainty (CIs&p)

From: Natural forests in New Zealand – a large terrestrial carbon pool in a national state of equilibrium

  Change in stocks
Tall forests and their alliances N tC·ha− 1 CIs CIs&p
Beech-Broadleaved Forest
 Kāmahi-hardwood forest 75 2.3 ± 6.9 ± 6.9
 Silver beech-broadleaf forest 70 1.1 ± 4.6 ± 4.6
 Silver beech-red beech-kāmahi forest 72 0.8 ± 7.4 ± 7.4
 Subtotal 217 1.4 ± 3.7 ± 3.7
Beech-Broadleaved-Podocarp Forest
 Kāmahi-Southern rata forest and tall shrubland 38 −0.4 ± 3.7 ± 3.7
 Pepperwood-hardwood forest and successional shrubland 50 1.0 ± 7.8 ± 7.8
 Kāmahi forest 59 −2.4 ± 6.4 ± 6.4
 Kāmahi-silver fern forest 42 −3.0 ± 6.6 ± 6.6
 Subtotal 189 −1.1 ± 3.3 ± 3.3
Beech Forest
 Black/mountain beech forest (subalpine) 28 4.8 ± 5.2 ± 5.2
 Black/mountain beech-silver beech forest/subalpine shrubland 54 −1.0 ± 4.4 ± 4.4
 Black/mountain beech forest 34 3.0 ± 6.6 ± 6.6
 Silver beech-red beech-black/mountain beech forest 28 1.5 ± 9.1 ± 9.1
 Silver beech forest with mountain lacebark and weeping matipo 11 1.3 ± 10.3 ± 10.3
 Hard beech-kāmahi forest 21 −3.4 ± 9.9 ± 9.9
 Subtotal 176 0.9 ± 2.7 ± 2.7
Broadleaved-Podocarp Forest (including kauri)
 Kāmahi-podocarp forest 86 −8.0 ± 6.1 ± 6.1
 Mahoe forest 61 2.4 ± 4.8 ± 4.8
 Tawa forest 82 −0.6 ± 4.9 ± 4.9
 Silver fern-mahoe forest 64 −2.2 ± 6.8 ± 6.8
 Pepperwood-fuchsia-broadleaf forest 21 1.6 ± 9.9 ± 9.9
 Mataī forest 7 6.7 ± 19.3 ± 19.3
 Towai-tawa forest 9 0.2 ± 22.7 ± 22.7
 Subtotal 330 −2.0 ± 2.7 ± 2.7
Regenerating forest and shrublands and their alliances
 Shrublands
  Kānuka shrubland with Coprosma and prickly mingimingi 24 8.3 ± 5.6 ± 5.6
  Grey scrub with kanuka 29 2.9 ± 2.8 ± 2.8
  Mānuka shrubland 4 1.1 ± 3.1 ± 3.1
  Matagouri shrubland 1 1.0   
  Turpentine scrub-Gaultheria montane shrubland 9 −0.4 ± 1.4 ± 1.4
  Gorse shrubland with cabbage trees 5 −9.2 ± 16.0 ± 16.0
  Subtotal 72 3.3 ± 2.6 ± 2.6
 Other
  Kānuka forest and tall shrubland 57 6.9 ± 2.9 ± 2.9
  Mountain neinei-Inanga low forest and subalpine shrubland 3 4.4   
Totala 1044 0.2 ± 1.4 ± 1.4
  1. aTwo grid locations were not classified into a forest alliance or association