The effects of wildfire on soil wettability and hydrological behaviour of an afforested catchment

Scott, David F.; Wyk, D. B. Van

doi:10.1016/0022-1694(90)90234-o

Cited by 241 publications

(163 citation statements)

References 13 publications

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“…Other studies (e.g. Scott & van Wyk 1990;Crockford et al 1991) have shown a correlation between water repellency and litter quality, implying higher water repellency on sites with 'ecologically less favorable' humus forms (e.g. moder and mor-like forms), in this case represented by the plots M and S. Higher water repellency under mor-type humus forms compared to other humus forms are also reported by Sevink et al (1989) and Imeson et al (1992).…”

Section: Soil and Water Res 3 2008 (Special Issue 1): S155-s164 Origsupporting

confidence: 58%

Variability of water repellency in sandy forest soils under broadleaves and conifers in north-western Jutland/Denmark

Wahl¹

2008

Soil & Water Res.

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Soil water repellency has important consequences for ecological and hydrological properties of soils and usually retards infiltration capacity and induces preferential flow. This phenomenon has been known to occur on a wide range of sites under a variety of climatic conditions. The objective of this study was to investigate and characterize soil water repellency on forest sites with identical substrate and climatic conditions, differing in tree age and species. In the Vester Torup Klitplantage, an area comprising a conifer dominated forest plantation stocking on sandy deposits in a coastal setting near the Jammer Bay in north-western Jutland/Denmark, four different forest plots were investigated for water repellency effects four times in 2005. To measure soil water repellency, the water drop penetration time test and the critical surface tension test were carried out. Both tests revealed a seasonal variability in water repellency, exhibiting the highest water repellency for the upper 10 cm of the soil during the summer months, whereas the variability between the different plots seems to be less significant. There was no coherence between humus forms, thickness of litter layer and water repellency.

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Section: Soil and Water Res 3 2008 (Special Issue 1): S155-s164 Origsupporting

confidence: 58%

Variability of water repellency in sandy forest soils under broadleaves and conifers in north-western Jutland/Denmark

Wahl¹

2008

Soil & Water Res.

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“…A high severity wildfire can consume all or nearly all of the protective vegetative cover and litter layer over extensive watershed areas, producing a significant effect on the magnitude of overland flow and, as discussed below, on streamflow from a watershed (Tiedemann and others 1979, Baker 1990, DeBano and others 1998. Formation of hydrophobic soils following fire also reduces infiltration, increases overland flow, and speeds delivery of the overland flow to stream channels (Hibbert and others 1974, Rice 1974, Scott and Van Wyk 1990. Persistence of the increased overland flow following fire relates to the rate at which burned sites become revegetated.…”

Section: Overland Flowmentioning

confidence: 99%

Wildland fire in ecosystems: effects of fire on soils and water

Neary¹,

Ryan²,

DeBano³

2005

446

369

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_____________________________________ Neary, Daniel G.; Ryan, Kevin C.; DeBano, Leonard F., eds. 2005. (revised 2008This state-of-knowledge review about the effects of fire on soils and water can assist land and fire managers with information on the physical, chemical, and biological effects of fire needed to successfully conduct ecosystem management, and effectively inform others about the role and impacts of wildland fire. Chapter topics include the soil resource, soil physical properties and fire, soil chemistry effects, soil biology responses, the hydrologic cycle and water resources, water quality, aquatic biology, fire effects on wetland and riparian systems, fire effects models, and watershed rehabilitation.

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“…Burch et al 1989;Booker et al 1993). doi: 10.2166/nh.2010.036 This is largely because pre-wildfire data are available in only a very few cases (Hoyt & Troxell 1934;Brown 1972;Langford 1976;Campbell et al 1977;Kuczera 1987;Scott & Van Wyk 1990;Lavabre et al 1993;Scott 1993Scott , 1997Lane et al 2006). Furthermore, most studies that have quantified catchment-scale effects have been associated with paired-watershed studies of prescribed fire effects on water quantity and quality.…”

Section: Introductionmentioning

confidence: 99%

Effects of wildfire on catchment runoff response: a modelling approach to detect changes in snow-dominated forested catchments

2010

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Wildfire is an important disturbance affecting hydrological processes through alteration of vegetation cover and soil characteristics. The effects of fire on hydrological systems at the catchment scale are not well known, largely because site specific data from both before and after wildfire are rare. In this study a modelling approach was employed for change detection analyses of one such dataset to quantify effects of wildfire on catchment hydrology. Data from the Entiat Experimental Forest (Washington State, US) were used, a conceptual runoff model was applied for pre-and post-fire periods and changes were analyzed in three different ways: reconstruction of runoff series, comparison of model parameters and comparison of simulations using parameter sets calibrated to the two different periods. On average, observed post-fire peak flows were 120% higher than those modelled based on pre-fire conditions. For the post-fire period, parameter values for the snow routine indicated deeper snow packs and earlier and more rapid snowmelt.The net effect of the changes in all parameters was largely increased post-fire peak flows.Overall, the analyses show that change detection modelling provides a viable alternative to the paired-watershed approach for analyzing wildfire disturbance effects on runoff dynamics and supports discussions on changes in hydrological processes.

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The effects of wildfire on soil wettability and hydrological behaviour of an afforested catchment

Cited by 241 publications

References 13 publications

Variability of water repellency in sandy forest soils under broadleaves and conifers in north-western Jutland/Denmark

Variability of water repellency in sandy forest soils under broadleaves and conifers in north-western Jutland/Denmark

Wildland fire in ecosystems: effects of fire on soils and water

Effects of wildfire on catchment runoff response: a modelling approach to detect changes in snow-dominated forested catchments

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