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. 2024 Feb 20;11:1276307. doi: 10.3389/fnut.2024.1276307

Table 1.

Environmental and diversity-related variables associated with nutrient parameters in Dryopteris filix mass.

Variables Code Unit Groups F p value
I II III
Latitude Lat (°) 34.01 ± 0.4 34.82 ± 0.5 34.80 ± 0.58 0.4 0.68
Longitude Long (°) 72.25 ± 0.07 72.24 ± 0.09 72.25 ± 0.09 0.11 0.9
Altitude Alt m 2,207 ± 29 1,954 ± 47.2 1,822 ± 154 6.98 0.004
Aspect degree AD (°) 246.5 ± 44 208.7 ± 42 217.9 ± 34 0.19 0.83
pH -- (1:5) 6.98 ± 0.12 6.96 ± 0.098 6.99 ± 0.05 0.05 0.95
Electrical conductivity EC S/m 0.27 ± 0.01 0.31 ± 0.03 0.30 ± 0.02 0.35 0.71
Phosphorus P (ppm) 11.58 ± 1.6 8.57 ± 1.07 7.21 ± 0.8 3.69 0.04
Nitrogen N (%) 0.029 ± 0.03 0.044 ± 0.01 0.02 ± 0.002 0.89 0.42
Potassium K (ppm) 89.7 ± 13 96.6 ± 10 111.2 ± 6 1.49 0.24
Organic matter OM (%) 0.58 ± 0.07 0.50 ± 0.04 0.51 ± 0.04 0.59 0.56
Clay -- (%) 4.57 ± 0.8 6.66 ± 0.8 6.14 ± 0.6 1.62 0.22
Silt -- (%) 24.2 ± 0.8 36.2 ± 3.4 32.42 ± 1.2 6.66 0
Sand -- (%) 71.1 ± 0.7 60 ± 1.66 61.42 ± 1.7 10.23 0
Wilting point WP (%) 0.06 ± 0.0035 0.07 ± 0.003 0.07 ± 0.002 3.76 0.04
Field capacity FC (%) 0.16 ± 0.03 0.21 ± 0.01 0.19 ± 0.005 7.79 0
Bulk density BD (%) 1.70 ± 0.07 1.58 ± 0.03 1.63 ± 0.02 2.98 0.07
Available water AW (%) 0.10 ± 0.01 0.12 ± 0.003 0.11 ± 0.002 8.33 0
Species richness S --- 9.14 ± 1.43 13.22 ± 0.81 10.57 ± 0.60 4.76 0.02
Shannon-Wiener diversity index H --- 1.76 ± 0.09 2.06 ± ±0.06 2.00 ± 0.07 3.09 0.06
Evenness or equitability index J --- 0.83 ± 0.03 0.80 ± 0.018 0.85 ± 0.015 1.89 0.17
Simpson’s index I/D --- 3.02 ± 0.02 4.03 ± 0.32 3.98 ± 0.21 2.21 0.07