Spatially explicit estimation of soil organic carbon stock of an estuarine mangrove wetland of eastern India using elemental analysis and very-fine resolution satellite data

Ecological Processes

Table 3 Coefficient of determination (R²) estimated for different spatial interpolation methods with respect to the relationship between the observed and corresponding predicted SOC values

Method of interpolation^†	Reference	Value of R² obtained in this study
IDW	Padua et al. 2018; Robinson and Metternicht 2006	0.65
OK	Bhusal et al. 2018; Robinson and Metternicht 2006	0.45
RBF	Fidêncio et al. 2002	0.67
LPI	Bogunovic et al. 2014; White et al. 1997; Xie et al. 2011	0.72
Spline	Bhusal et al. 2018; Schloeder et al. 2001	0.74

^†IDW Inverse Distance Weighting, OK Ordinary Kriging, RBF Radial Basis Function, LPI Local Polynomial Interpolation