Article Figures & Data
Figures
- Figure 1.
Variations of a) mean daily soil moisture in the uppermost 20 cm (7.9 in) of soil, and b) daily precipitation.
- Figure 2.
Soil volumetric water content at three depths in unpaved (control) soils. Each data point represents the mean value of five probes (in five replicate plots). The region between the dotted lines represents the least-limiting water range between the field capacity and the permanent wilting point.
- Figure 3.
Soil volumetric water content at three depths beneath impervious pavement. Each data point represents the mean value of five probes (in five replicate plots). The dotted line represents the field capacity of the soil.
- Figure 4.
Soil volumetric water content at three depths beneath pervious pavement. Each data point represents the mean value of five probes (in five replicate plots). The dotted line represents the field capacity of the soil.
- Figure 5.
Evaluation of soil aeration. The mean anaerobic score (n = 5) for all treatments stratified by depth beneath the soil surface. Greater anaerobic score corresponds to decreased soil oxygen. Control plots exhibit greater aeration than soil beneath pavement.
Tables
- Table 1.
Weekly volumetric soil moisture for all treatments. Values represent mean measurements in the upper 20 cm (8 in) of soil. Significant differences resulting from treatment are noted by different symbols following the mean value.
Treatment Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Control 28.8a 27.4a 23.6a 20.1a 20.1a 20.7a 21.5a 21.2a 24.9a 28.8a 25.3a 28.7a 26.1a 24.8a 24.1a 24.8a 26.8a 26.7a 26.3a Pervious 45.0b 44.6b 43.6b 42.3b 41.4b 40.5b 39.8b 38.8b 38.7b 38.9b 38.6b 38.3b 36.6b 35.3b 34.6b 34.5b 34.7b 34.4b 33.8c Impervious 42.8b 42.8b 42.4b 42.1b 41.6b 40.5b 40.0b 39.1b 38.5b 38.0b 38.8b 37.7b 37.3b 37.0b 36.4b 35.3b 34.3b 33.5b 32.1b - Table 2.
Weekly mean volumetric soil moisture across different soil depths. Significant differences resulting from soil depth within each treatment and week are noted by different symbols following the mean value. (P = 0.05) Week
Treatment Depth Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Control 5 28.3a 23.8a 18.7a 15.3a 15.2a 16.6a 17.3a 16.8a 22.4a 27.0a 21.5a 27.5a 22.4a 20.2a 19.3a 21.9a 26.7a 26.3a 25.6a 10 29.3a 28.7b 24.9b 21.3b 21.2b 21.5b 22.3b 22.1b 25.4ab 29.2ab 25.5b 28.4a 26.3b 25.6b 24.9b 25.0b 26.3a 26.5a 26.4a 20 28.8a 29.8b 27.1b 23.8c 24.0c 24.2b 24.7b 24.7b 26.9b 30.3b 28.8c 30.3a 29.8c 28.8c 28.1c 27.6c 27.4a 27.2a 26.9a Pervious 5 44.4ab 43.7ab 42.6ab 41.0ab 39.8ab 39.1ab 38.6ab 37.6ab 38.2ab 38.2a 37.8a 37.8ab 36.4ab 35.6a 35.0a 35.2a 35.3a 35.1ab 34.5b 10 42.2a 41.4a 40.8a 40.0a 39.3a 38.1a 37.3a 36.3a 36.4a 36.7a 36.4a 36.2a 34.6a 33.7a 33.2a 33.1a 33.2a 32.8a 32.1a 20 48.5b 48.6b 47.4b 46.0b 45b 44.2b 43.7b 42.3b 41.4b 41.9b 41.6b 40.8b 38.9b 36.7a 35.7a 35.1a 35.5a 35.4b 34.9b Impervious 5 42.8a 42.7a 42.1a 41.7a 41.0a 39.7a 39.0a 38.0a 37.5a 36.8a 37.8a 36.9a 36.4a 36.6a 36.0a 35.1ab 34.4a 34.0a 33.4b 10 45.5a 45.4a 45.0a 44.7a 44.2a 43.1a 42.5a 41.5a 40.8a 40.2a 40.8a 39.7a 39.1a 38.7a 37.9a 36.6a 35.4a 34.3a 32.1ab 20 40.1a 40.3a 40.1a 39.8a 39.5a 38.7a 38.3a 37.7a 37.1a 36.9a 37.5a 36.5a 36.1a 35.7a 35.1a 34.2a 33.1a 32.3a 31.2a - Table 3.
Mean anaerobic scores and standard errors during summer 2008. Significant differences resulting from treatment are noted by different symbols following the mean value. (P = 0.05)
Treatment Depth below ground (cm) 0-12 12-24 24-36 36-48 Control 0.15 (0.22)a 0.55 (0.82)a 1.70 (1.87)a 1.15 (1.42)a Porous Pavement 5.45 (1.85)b 6.55 (2.58)a 6.80 (2.67)a 6.30 (2.51)ab Impervious Pavement 4.75 (2.22)b 5.00 (2.66)a 5.80 (2.63)a 9.30 (1.98)b
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