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Landscapes Forest and Global Change - ESA - Escola Superior ...

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R.A. Diaz-Varela et al. 2010. Extent <strong>and</strong> characteristics of mire habitats in Galicia (NW Iberian Peninsula)<br />

198<br />

Table 1: Explanatory variables<br />

Variable group Variable Acronym Type Units<br />

Annual average temperature Temp Ordinal Adimensional (intervals)<br />

Climate<br />

Annual total rainfall Rain Ordinal Adimensional (intervals)<br />

Annual total evapotranspiration ETP Ordinal Adimensional (intervals)<br />

Annual water balance Waterbal Ordinal Adimensional (intervals)<br />

Transformed aspect TRASP Scale Adimensional<br />

Curvature Curv Scale Adimensional<br />

Plan curvature (across slope) Plancurv Scale Adimensional<br />

Topography<br />

Profile curvature (along slope) Profcurv Scale Adimensional<br />

Slope Slope Scale degrees<br />

Terrain shape index Tershp Scale Adimensional<br />

Wetness index Wenidn Scale Adimensional<br />

Elevation DEM Scale m a.s.l.<br />

Geology Geologic material MAT Nominal Adimensiona<br />

Distance to sea Distance to sea Distosea Scale m<br />

Table 2: Intervals for the climate variables<br />

Average year temperature Total year rainfall Total year Evapotranspiration Total year water balance<br />

Code Intervals (ºC) Code Intervals (mm) Code Intervals (mm) Code Intervals (mm)<br />

1 15 9 > 2000 - - - -<br />

Table 3. Accuracy of the CHAID classification<br />

Predicted<br />

Observed Blanket Cladium Fen Tuf Percent correct<br />

blanket 1767 0 0 1 99,9%<br />

cladium 13 122 4 40 68,2%<br />

fen 11 11 49 0 69,0%<br />

tuf 1 14 10 924 97,4%<br />

Percent correct 60,4% 5,0% 2,1% 32,5% 96,5%<br />

<strong>Forest</strong> <strong>L<strong>and</strong>scapes</strong> <strong>and</strong> <strong>Global</strong> <strong>Change</strong>-New Frontiers in Management, Conservation <strong>and</strong> Restoration. Proceedings of the IUFRO L<strong>and</strong>scape Ecology<br />

Working Group International Conference, September 21-27, 2010, Bragança, Portugal. J.C. Azevedo, M. Feliciano, J. Castro & M.A. Pinto (eds.)<br />

2010, Instituto Politécnico de Bragança, Bragança, Portugal.

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