Fig. 3: Partial dependence plots showing the relationships between microbial nitrogen use efficiency (NUE) and environmental predictors.
From: Global patterns and drivers of soil microbial nitrogen and phosphorus use efficiency
Panels show the marginal effects of individual predictors on NUE: a mean annual temperature (MAT, °C); b mean annual precipitation (MAP, mm); c soil organic carbon (SOC, %); d soil pH; e soil silt content (%); f soil clay content (%); g cation exchange capacity (CEC, cmol kg−1); h base saturation (Bsat, %); i potential evapotranspiration (PET, mm); j mean annual relative humidity (Humidity, %); k normalized difference vegetation index (NDVI); and l Soil depth (cm). Blue, brown, and green lines represent climatic, soil, and vegetation predictors, respectively.
