Some effects of plant ash on the chemical properties of soils and aqueous suspensions

Raison, R. J.; McGarity, J. W.

doi:10.1007/bf02182695

Cited by 22 publications

(20 citation statements)

References 11 publications

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“…In other studies, the N content of soil has been shown to decrease with heating or burning (White et al 1973;Ellis & Graley 1983). Also, White et al (1973) and Raison et al (1985) showed that the amount of N remaining in ash depends on the temperature and the degree of combustion. In the present study, losses of N from the combustion of organic matter were probably not as large as losses from intense fires in dry slash because lower surface temperatures would result from the diffuse nature of fuels and the rapid convection of heat away from the surface.…”

Section: Initial Effects Of Fire On Soil Chemical Propertiesmentioning

confidence: 95%

“…2) indicate that there were substantial losses of N, S and K from the sites. These are the elements shown to be most vulnerable to loss to the atmosphere in particulate and non-particulate forms (Allen 1964;Debell & Ralston 1970;Raison et al 1985). The increased amounts of N in surface soils after the fire are greater than expected considering the large losses of N that can occur by volatilization (Debell & Ralston 1970;Raison et al 1985).…”

Section: Increases In Total Amounts Of Nutrients In Surface Soils In mentioning

confidence: 95%

“…The increases in concentrations of total N in the 0-3 cm soil immediately after the fire were high, considering the large N losses that can occur through volatilization (Debell & Ralston 1970;Raison 1980) and the intensity ofthe fire. In other studies, the N content of soil has been shown to decrease with heating or burning (White et al 1973;Ellis & Graley 1983).…”

Section: Initial Effects Of Fire On Soil Chemical Propertiesmentioning

confidence: 97%

“…However, changes in pH with burning are very dependent on the amount and nature of the ash, the depth of soil sampling (dilution effect), the buffering capacity of the soil and the time ash has been in contact with the mineral soil (Raison & McGarity 1980).…”

Section: Initial Effects Of Fire On Soil Chemical Propertiesmentioning

confidence: 99%

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Nutrient changes in surface soils after an intense fire in jarrah (Eucalyptus marginata Donn ex Sm.) forest

Grove

O’Connell

Dimmock

1986

Australian Journal of Ecology

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The effects of an intense fire on the nutrient status of jarrah ^Eucalyptus marginata Donn ex Sm.) forest soils were investigated. At seven experimental sites, representing a range of soil and vegetation types, surface soils were sampled to a maximum depth of 20 cm before, immediately after, and 1 year after the fire.Immediately after the fire, concentrations of total and extracted nutrients in surface (0-3 cm) soils mcreased markedly. One year later, concentrations of extracted nutrients in surface soils had returned to levels close to pre-burn concentrations. During this period, some properties of sub-surface (3-20 cm) soils also changed: Bray-extractable phosphorus and electrolytic conductivity decreased, whereas e.xtractablepotassium andpH increased relative to pre-burn concentrations. Initial increases in concentrations of extractable forms of nutrients were determined largely by the amounts of nutrients deposited in fine ash, whereas the changes after 1 year depended more on the leaching of ions and their reactions with the mineral soil.Increases in total amounts of major nutrients in surface soils arising from additions offi ne ash were generally well correlated wtth amounts in pre-burn litter and with amounts in the components of organic matter likely to be consumed in the fire. Significant quantities of all nutrients are redistributed from aboveground sources to the soil surface during intense fires, including nutrients which are most susceptible to losses through volatilization. This redistribution of nutrients is discussed in relation to short-term and long-term effects on plant growth and functioning of the jarrah ecosystem.

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Section: Initial Effects Of Fire On Soil Chemical Propertiesmentioning

confidence: 95%

Section: Increases In Total Amounts Of Nutrients In Surface Soils In mentioning

confidence: 95%

Section: Initial Effects Of Fire On Soil Chemical Propertiesmentioning

confidence: 97%

Section: Initial Effects Of Fire On Soil Chemical Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Nutrient changes in surface soils after an intense fire in jarrah (Eucalyptus marginata Donn ex Sm.) forest

Grove

O’Connell

Dimmock

1986

Australian Journal of Ecology

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“…This interpretation is supported by the corresponding changes in biomass, soil pH, soil moisture, and DOC/TDN that we observed (Figure 2). Both the dominant species and the quantity of ash added to the plot after the fire would influence soil pH [81][82][83], variation in pH here is a reasonable proxy for fire intensity (Figure A3). At higher pH, organic compounds become more soluble and therefore more prone to leaching after wildfires in western forests [84].…”

Section: Discussionmentioning

confidence: 99%

Disturbance Alters the Relative Importance of Topographic and Biogeochemical Controls on Microbial Activity in Temperate Montane Forests

Lybrand

Gallery

Trahan

et al. 2018

Forests

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Abstract:Fire and pathogen-induced tree mortality are the two dominant forms of disturbance in Western U.S. montane forests. We investigated the consequences of both disturbance types on the controls of microbial activity in soils from 56 plots across a topographic gradient one year after the 2012 High Park wildfire in Colorado. Topsoil biogeochemistry, soil CO 2 efflux, potential exoenzyme activities, and microbial biomass were quantified in plots that experienced fire disturbance, beetle disturbance, or both fire and beetle disturbance, and in plots where there was no recent evidence of disturbance. Soil CO 2 efflux, N-, and P-degrading exoenzyme activities in undisturbed plots were positively correlated with soil moisture, estimated from a topographic wetness index; coefficient of determinations ranged from 0.5 to 0.65. Conversely, the same estimates of microbial activities from fire-disturbed and beetle-disturbed soils showed little correspondence to topographically inferred wetness, but demonstrated mostly negative relationships with soil pH (fire only) and mostly positive relationships with DOC/TDN (dissolved organic carbon/total dissolved nitrogen) ratios for both disturbance types. The coefficient of determination for regressions of microbial activity with soil pH and DOC/TDN reached 0.8 and 0.63 in fire-and beetle-disturbed forests, respectively. Drivers of soil microbial activity change as a function of disturbance type, suggesting simple mathematical models are insufficient in capturing the impact of disturbance in forests.

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Wildfire effects on extractable elements in ash from aPinus pinasterforest in Portugal

Pereira

Úbeda

Martin³

et al. 2013

Hydrological Processes

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The aim of this work is to study the effects of a wildfire on water-extractable elements in ash from a Pinus pinaster forest located in Portugal. The pH, electrical conductivity (EC), calcium (Ca 2+ ), magnesium (Mg 2+ ), sodium (Na + ), potassium (K + ), sodium and potassium adsorption ratio (SPAR), aluminium (Al 3+ ), manganese (Mn 2+ ), iron (Fe 2+ ), zinc (Zn 2+ ), sulphur (S), silica (Si) and phosphorous (P) were analysed in ash sampled from a sloped area burned in a wildfire and from litter from a contiguous unburned area, with similar morphological conditions. The results showed that ash leachates had higher pH and EC, and were significantly richer in water-extractable Ca 2+ , Mg 2+ , Na + , K + , SPAR, S and Si and significantly poorer in water-extractable Al 3+ , Fe 2+ , Mn 2+ and Zn 2+ than litter solutions. No significant differences were observed in water-extractable P. The fire changed the ash solute chemistry compared with the unburned litter and increased the sample variability of nutrient distribution with potential implications for plant recovery.Comparisons made with untransformed data (1), and Ln transformed data (2), and with Mann-Whitney U test due to lack of normality after Ln and Box-Cox data transformations (3). n.s means that differences are not significant at p < 0.05, electrical conductivity is in mS/cm and extractable elements are in mg/l. SD, standard deviation; min, minimum; max, maximum; CV%, coefficient of variation; SPAR, sodium and potassium adsorption ratio. 3684 P. PEREIRA ET AL.

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Some effects of plant ash on the chemical properties of soils and aqueous suspensions

Cited by 22 publications

References 11 publications

Nutrient changes in surface soils after an intense fire in jarrah (Eucalyptus marginata Donn ex Sm.) forest

Nutrient changes in surface soils after an intense fire in jarrah (Eucalyptus marginata Donn ex Sm.) forest

Disturbance Alters the Relative Importance of Topographic and Biogeochemical Controls on Microbial Activity in Temperate Montane Forests

Wildfire effects on extractable elements in ash from aPinus pinasterforest in Portugal

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