Fig. 7
From: Spatially-integrated estimates of net ecosystem exchange and methane fluxes from Canadian peatlands
Regression tree for predicting average daily methane emissions (mg CH4 m−2 day−1) from peatlands from climate parameters (r2 = 0.29). Ovals represent intermediate nodes and mean value and number of observations within the node. Boxes are terminal nodes and mean value and number of observations within node. Climate factors and split values are indicated above the nodes. PWQ is precipitation of warmest quarter, MDR is mean diurnal range, and Iso is isothermality