Table 1 Linear mixed-effects model for the relationships between multiple biotic (BNPP, plant species richness, and the soil microbial diversity index) and abiotic (aridity, soil pH, and clay content) factors and soil multifunctionality with considering soil and vegetation types as random terms.
From: Aridity-driven shift in biodiversity–soil multifunctionality relationships
Term | df | ddf | MS | F | P | Estimate | VIF |
---|---|---|---|---|---|---|---|
Random terms are soil and vegetation types; Conditional R2 0.69; Marginal R2 0.59 | |||||||
Year | 1 | 37.5 | 3.30 | 9.22 | 0.004 | −0.11 | 2.09 |
Plant species richness | 1 | 8.9 | 10.03 | 28.01 | <0.001 | 0.03 | 2.12 |
Soil microbial diversity index | 1 | 103.1 | 0 | 0 | 0.996 | 0.21 | 2.45 |
Aridity | 1 | 18.7 | 7.45 | 20.83 | 0.001 | −0.36 | 2.04 |
BNPP | 1 | 49.1 | 1.88 | 5.25 | 0.026 | 0.05 | 1.10 |
Soil pH | 1 | 112.6 | 3.50 | 9.77 | 0.002 | −0.26 | 1.65 |
Soil clay content | 1 | 115.6 | 5.39 | 15.07 | <0.001 | 0.18 | 2.10 |
Elevation | 1 | 109.5 | 1.24 | 3.45 | 0.066 | 0.23 | 2.27 |
Latitude | 1 | 114.1 | 4.79 | 13.38 | <0.001 | 0.35 | 4.14 |
Longitude | 1 | 114.6 | 0.99 | 2.77 | 0.098 | −0.19 | 1.72 |
Plant species richness × Soil microbial diversity index | 1 | 109.1 | 0 | 0 | 0.994 | 0.20 | 4.47 |
Aridity × Plant species richness | 1 | 104.2 | 1.36 | 3.79 | 0.054 | −0.13 | 1.76 |
Aridity × Soil microbial diversity index | 1 | 115.2 | 2.03 | 5.67 | 0.019 | 0.26 | 4.10 |