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. 2020 Apr 6;8:e8908. doi: 10.7717/peerj.8908

Table 2. Effects of land use type, soil depth, and their interactions on soil aggregate stability indexes, soil particle distribution, SOC content, and the K factor.

Two-way ANOVA analysis with LSD test; “ns” means no-significant differences.

Factor Variable Type III sum of squares df Mean square F Sig.
Soil depth WSMacA 1035.380 5 207.076 1.324 0.265 ns
MWD 0.114 5 0.023 1.271 0.287 ns
GMD 0.225 5 0.045 1.840 0.117 ns
AR 129.819 5 25.964 2.891 0.020
SOC 65.660 5 13.132 8.048 0.000
Clay 10.926 5 2.185 0.312 0.904 ns
Silt 15.309 5 3.062 0.410 0.840 ns
K factor 0.000 5 0.000 10.369 0.000
Land use type WSMacA 1,894.041 2 947.021 6.056 0.004
MWD 0.202 2 0.101 5.616 0.006
GMD 0.267 2 0.134 5.468 0.006
AR 206.646 2 103.323 11.505 0.000
SOC 2.960 2 1.480 0.907 0.409 ns
Clay 29.077 2 14.539 2.077 0.133 ns
Silt 23.003 2 11.501 1.539 0.222 ns
K factor 0.000 2 0.000 0.358 0.700 ns
Soil depth × Land use type WSMacA 806.588 9 89.621 0.573 0.814 ns
MWD 0.094 9 0.010 0.578 0.811 ns
GMD 0.199 9 0.022 0.904 0.527 ns
AR 80.510 9 8.946 0.996 0.452 ns
SOC 8.795 9 0.977 0.599 0.793 ns
Clay 28.721 9 3.191 0.456 0.899 ns
Silt 27.619 9 3.069 0.411 0.925 ns
K factor 0.000 9 0.000 0.384 0.939 ns