Studies reporting effects of plant age on infiltration rate or saturated hydraulic conductivity
| Species | Soil type and preparation | Plant age | Effect on infiltration rate or saturated conductivity, as compared with fallow soil | Reference |
|---|---|---|---|---|
| Wheat (Triticum aestivum) | Sandy loam and loamy sand soils, repacked to bulk density of 15·2 kN/m3 | Wheat (living plants, single time-point) | Dispersion of solute used to infer degree of bypass flow: < fallow soil for live plants | Gish & Jury (1983) |
| Wheat (after 1·5 years’ decomposition) | > fallow soil for decomposed plants | |||
| Tulip poplar (Liriodendron tulipifera), black gum (Nyssa sylvatica) and red maple (Acer rubrum) | Field soil – variable deposits from sand to clay | Natural wetland riparian vegetation, indeterminate ages (plant age not a variable) | Evidence of bypass flow from tracer experiments, with bypass flow up to 152 times that of matrix, substantially along dead root channels | Elci & Molz (2009) |
| White alder (Alnus incana) | Poorly graded sand and silty sand, repacked to dry density of 16 kN/m3 | 1, 2, 4 and 8 months | Increased with plant age during 2 months of growth, followed by stabilisation at 4 months old and a subsequent decrease at 8 months old | Vergani & Graf (2015) |
| Scots pine trees (Pinus sylvestris) | Field soil – various peaty podzols | Scots pine had grown for 6, 48, 300 or >1000 years on these sites. Single time-point measurements | Increased with forest age by between one and two orders of magnitude | Archer et al. (2015) |
| Vetiver grass (Chrysopogon zizanioides) | Low-plasticity silt, repacked to dry density of 13·1 kN/m3 | 4–10 months | > fallow soil when root biomass per soil volume is less than ∼6 kg/m3 | Jotisankasa & Sirirattanachat (2017) |
| < fallow soil when root biomass per soil volume is higher than ∼6 kg/m3 | ||||
| Clayey sand, repacked to dry density of 14 kN/m3 | < fallow soil when root biomass per soil volume is less than ∼6 kg/m3 | |||
| Similar to fallow soil when root biomass per soil volume is higher than ∼6 kg/m3 |
| Species | Soil type and preparation | Plant age | Effect on infiltration rate or saturated conductivity, as compared with fallow soil | Reference |
|---|---|---|---|---|
| Wheat ( | Sandy loam and loamy sand soils, repacked to bulk density of 15·2 kN/m3 | Wheat (living plants, single time-point) | Dispersion of solute used to infer degree of bypass flow: | |
| Wheat (after 1·5 years’ decomposition) | > fallow soil for decomposed plants | |||
| Tulip poplar ( | Field soil – variable deposits from sand to clay | Natural wetland riparian vegetation, indeterminate ages (plant age not a variable) | Evidence of bypass flow from tracer experiments, with bypass flow up to 152 times that of matrix, substantially along dead root channels | |
| White alder ( | Poorly graded sand and silty sand, repacked to dry density of 16 kN/m3 | 1, 2, 4 and 8 months | Increased with plant age during 2 months of growth, followed by stabilisation at 4 months old and a subsequent decrease at 8 months old | |
| Scots pine trees ( | Field soil – various peaty podzols | Scots pine had grown for 6, 48, 300 or >1000 years on these sites. Single time-point measurements | Increased with forest age by between one and two orders of magnitude | |
| Vetiver grass ( | Low-plasticity silt, repacked to dry density of 13·1 kN/m3 | 4–10 months | > fallow soil when root biomass per soil volume is less than ∼6 kg/m3 | |
| < fallow soil when root biomass per soil volume is higher than ∼6 kg/m3 | ||||
| Clayey sand, repacked to dry density of 14 kN/m3 | < fallow soil when root biomass per soil volume is less than ∼6 kg/m3 | |||
| Similar to fallow soil when root biomass per soil volume is higher than ∼6 kg/m3 |
Sharing content requires targeting cookies to be enabled. Please update your cookie preferences to use this feature.