International Scholarly Research Notices

Research Article

Modeling Agroecosystem Services under Simulated Climate and Land-Use Changes

Table 2

Variance components and their level of significance accounted for by fixed factors, random factors, and their interaction in two simulation scenarios involving 12 soil series and eight crop rotations in the Chippewa River Watershed, MN.


		Fixed factor		Random factor
Simulation	Variable	Crop rotation	Crops (crop rotation)	Soil series	Crop rotation × soil series
		Probability of F-value		Probability of z-value (% variance)

Past 100 yrs	Biomass	0.001	0.001	0.05 (61%)	0.21 (3%)
	Grain yield	0.005	0.05	0.02 (45%)	0.09 (6%)
	Soil carbon	0.0001	0.12	0.01 (74%)	0.05 (12%)
	NO₃-N	0.005	0.15	0.05 (34%)	0.01 (54%)
	NH₄-N	0.05	0.09	0.05 (29%)	0.01 (56%)
	Runoff	0.0001	0.07	0.02 (54%)	0.01 (32%)
	Erosion	0.0001	0.11	0.01 (52%)	0.01 (40%)

Future 100 yrs (A2 scenario)	Biomass	0.001	0.001	0.01 (56%)	0.05 (5%)
	Grain yield	0.001	0.001	0.01 (45%)	0.14 (5%)
	Soil carbon	0.0001	0.10	0.001 (62%)	0.05 (23%)
	NO₃-N	0.001	0.07	0.02 (48%)	0.05 (31%)
	NH₄-N	0.001	0.09	0.05 (32%)	0.02 (46%)
	Runoff	0.0001	0.14	0.01 (64%)	0.05 (30%)
	Erosion	0.0001	0.22	0.02 (45%)	0.05 (27%)