Building houses and managing lawns could limit yard soil carbon for centuries

Table 1 Present land use and depth effects on soil properties after accounting for pre-development legacies

Response	Factor	F value (df^a)	p value	Marginal r^2a	Conditional r^2a
Soil C Pool	Land use	9.74 (2, 161.9)	0.0001	0.27	0.38
Soil C Pool	Depth	19.5 (3, 158.8)	< 0.0001
Soil N Pool	Land use	6.0 (2, 156.2)	0.003	0.39	0.46
	Depth	29.5 (3, 152.8)	< 0.0001
	Land use: depth	2.3 (6, 152.9)	0.03
Soil C/N	Land use	2.6 (2, 156.7)	0.07	0.18	0.23
	Depth	5.2 (3, 152.1)	0.002
	Land use: depth	2.3 (6, 152.1)	0.04
Bulk density	Land use	18.3 (2, 155.0)	< 0.0001	0.38	0.47
	Depth	23.2 (3, 151.7)	< 0.0001
	Land use: depth	4.1 (6, 151.7)	< 0.001

^aDenominator degrees of freedom by Satterthwaite approximation. Marginal r² represent the fixed effect of present land use and conditional r² include the random effect of land-use cluster. Results from equation: response ∼ land use + depth + (1| land-use cluster). Fixed effects interaction included when significant

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