Forestry Statistics 2010 - Environment

Woodland vegetation

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The Countryside Survey carried out by the Centre for Ecology and Hydrology, reports for a wide range of habitats, including conifer and broadleaved woodland.  Results for 2007 show some declines in species richness. Data for Scotland show significant declines in species richness since 1998, in both broadleaved and conifer woodlands. No other changes in species richness since 1998 are statistically significant, but Wales and GB total show significant declines in species richness for broadleaves over the longer period since 1990.

The Ellenberg N fertility score has declined significantly over the longer period since 1990 for broadleaves in Scotland. There are no other significant changes in Ellenberg fertility and light scores.

Table 5.4 Vegetation richness and condition scores1

 

 

England

  Wales

Scotland

        GB

Species richness

         

Broadleaved

1990

20.8

25.8

25.3

22.6

 

1998

18.9

22.8

26.9

21.3

 

2007

20.1

21.6

22.1

20.9

Conifer 1990 16.0 12.2 14.2 14.5
  1998 14.2 15.7 15.6 15.3
  2007 14.9 13.9 13.7 14.1

Ellenberg light score

         
Broadleaved 1990 6.0 6.4 6.3 6.2
  1998 5.9 6.3 6.4 6.1
  2007 5.9 6.3 6.4 6.1
Conifer 1990 5.9 6.1 6.4 6.2
  1998 5.8 6.2 6.4 6.2
  2007 5.8 6.1 6.4 6.2

Ellenberg N fertility score

         
Broadleaved 1990 5.5 4.5 4.5 5.1
  1998 5.5 4.6 4.3 5.1
  2007 5.6 4.6 4.2 5.1
Conifer 1990 4.7 3.6 3.4 3.8
  1998 4.7 3.7 3.4 3.9
  2007 4.7 3.8 3.3 3.8

 

Not National Statistics.

Source: Countryside Survey data (C) NERC - Centre for Ecology & Hydrology.

Notes:

1. Higher scores indicate more species, and higher levels of light and fertility.

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