Connecting Soil Organic Carbon and Root Biomass with Land-Use and Vegetation in Temperate Grassland

Table 3

Results of six multiple linear mixed effect regression models each comparing response variables against tall fescue abundance and grazing history as independent variables (fixed effects). Lower and upper bounds define simulated 95% confidence intervals while reports goodness-of-fit for multiple fixed effects.

Response variable	Tall fescue		Grazing history
	Lower	Upper	Lower	Upper
Soil organic carbon
0–20 cm	−2.9	20.6	−927	316	0.07
0–100 cm	−58	115	−5339	3307	0.01
% 0–10 cm	−0.02	0.02	−1.68	0.51	0.10
Root mass
0–20 cm	−0.01	0.06	−4.1	−0.9	0.24
0–100 cm	−0.01	0.18	−13.7	−3.6	0.28
Bulk density
0–20 cm	−0.002	0.002	0.02	0.2	0.22