The Sloping Mire Soil-Landscape of Southern Ecuador: Influence of Predictor Resolution and Model Tuning on Random Forest Predictions

Table 1

SAGA modules to calculate terrain parameters.

Terrain parameter	Module library	Module	Reference	Saga author/year
Altitude	Terrain analysis—preprocessing	Fill sinks (Planchon/Darboux, 2001)	[24]	Wichmann/2003
Slope; Aspect; Profile curvature; Plan curvature	Terrain analysis—morphometry	Slope, aspect, curvature	[25]	Conrad/2001
Convergence index	Terrain analysis—morphometry	Convergence index (search radius)	[26]	Conrad/2003
Normalised height; Valley depth	Terrain analysis—morphometry	Relative heights and; Slope positions	—	Böhner and  Conrad/2008
TRI	Terrain analysis—morphometry	Terrain ruggedness index	[27]	Conrad/2010
Wind effect	Terrain analysis—morphometry	Wind effect	—	Böhner and Ringeler/2008, Conrad/2011
KRAA; KRAS	Terrain analysis—hydrology	Catchment area; (flow tracing)	[28]	Conrad/2001
SWI	Terrain analysis—hydrology	Saga wetness index	[29]	Böhner and Conrad/2001
PISR	Terrain analysis—lighting, visibility	Potential incoming solar radiation—direct insolation	[30–32]	Conrad/2010