Infiltration and Soil Erosion as Influenced by Vegetation and Soil in Northern Utah

Meeuwig, Richard O.

doi:10.2307/3896384

Cited by 66 publications

(48 citation statements)

References 4 publications

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“…In autumn it is 25% lower. Similar work done in forested soils by Johnston and Beschta ( 1981 ) using a rainfall simulator (Meewing, 1969) and a plot of 0.3 m 2, found 50% less infiltration in autumn compared to summer. The higher rainfall intensity used by Beschta (1980, 1981) explains the higher differences in western Oregon compared to southeast Spain.…”

Section: Infiltration Rates (%)supporting

confidence: 70%

Seasonal variability of infiltration rates under contrasting slope conditions in southeast Spain

Cerdà

1996

Geoderma

143

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Infiltration is the key process in the rainfall-runoff relationship. Little is known, however, about the seasonal and spatial variability, which is important for the behaviour of the slope surface geomorphological processes.The infiltration rates for contrasting slopes in southeast Spain have been measured by means of simulated rainfall and ponding. A north-and a south-facing slope were selected to analyze effects of aspect. The results show that aspect as well as slope position and vegetation cover determine the steady state infiltration rates.Moreover, seasonal changes play an important role in the soil hydrology. During summer the infiltration rates are high, no runoff is observed on vegetation covered soils. On the bare surfaces, runoff was only 10% of the rainfall. During the wet season, especially in autumn, the infiltration rates are lower, and runoff coefficients equal to 0.3. For the vegetated surfaces, runoff is negligible.Infiltration measurements by means of ponding and simulated rainfall are both suitable to study the infiltration process. In the present study, the infiltration rates measured by cylinder infiltrometer were 8 times greater than by rainfall simulation at 55 mm h-1.

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Section: Infiltration Rates (%)supporting

confidence: 70%

Seasonal variability of infiltration rates under contrasting slope conditions in southeast Spain

Cerdà

1996

Geoderma

143

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“…These variables also enhanced the adverse effects of population and land use pressures (Figures 8 and 9). One possible mechanism is that fuel wood collection, agriculture, and grazing reduce perennial plant cover and simplify the vegetation structure exposing the soil to wind and water erosion [15]; also soil erosion and dispersion rates are higher in landscapes with higher soil bulk density and soil erodibility [113][114][115][116].…”

Section: Discussionmentioning

confidence: 99%

Environmental and Anthropogenic Degradation of Vegetation in the Sahel from 1982 to 2006

Rishmawi

Prince

2016

Remote Sensing

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There is a great deal of debate on the extent, causes, and even the reality of land degradation in the Sahel. Investigations carried out before approximately 2000 using remote sensing data suggest widespread reductions in biological productivity, while studies extending beyond 2000 consistently reveal a net increase in vegetation production, strongly related to the recovery of rainfall following the extreme droughts of the 1970s and 1980s, and thus challenging the notion of widespread, long-term, subcontinental-scale degradation. Yet, the spatial variations in the rates of vegetation recovery are not fully explained by rainfall trends. It is hypothesized that, in addition to rainfall, other meteorological variables and human land use have contributed to vegetation dynamics. Throughout most of the Sahel, the interannual variability in growing season ΣNDVI gs (measured from satellites, used as a proxy of vegetation productivity) was strongly related to rainfall, humidity, and temperature (mean r 2 = 0.67), but with rainfall alone was weaker (mean r 2 = 0.41). The mean and upper 95th quantile (UQ) rates of change in ΣNDVI gs in response to climate were used to predict potential ΣNDVI gs -that is, the ΣNDVI gs expected in response to climate variability alone, excluding any anthropogenic effects. The differences between predicted and observed ΣNDVI gs were regressed against time to detect any long-term (positive or negative) trends in vegetation productivity. Over most of the Sahel, the trends did not significantly depart from what is expected from the trends in meteorological variables. However, substantial and spatially contiguous areas (~8% of the total area of the Sahel) were characterized by negative, and, in some areas, positive trends. To explore whether the negative trends were human-induced, they were compared with the available data of population density, land use, and land biophysical properties that are known to affect the susceptibility of land to degradation. The spatial variations in the trends of the residuals were partly related to soils and tree cover, but also to several anthropogenic pressures.

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“…1961 Dunne and Black, 1970198520032006Miyata et al, 2007, 2009a, b Sidle et al, 2007Gomi et al, 2008a, b 20082009Miyata et al, 2007Gomi et al, 2008b200919951995Miyata et al 2009a2.7 20081985 2003 Gomi et al, 2008b2008Miyata et al, 2009a197520081975Marston, 1952Meeuwig, 197019952008Miyata et al, 2009a 10 Marston, 1952Cerdà, 1998Gomi et al, 2008bKato et al, 2009Miyata et al, 2009a structure crust 1 cm 1995 Patrick, 2002Dunne et al, 19911995Dunne et al, 1991Gomi et al 2008a 8 …”

mentioning

confidence: 99%

Factors Affecting Generation of Hortonian Overland Flow in Forested Hillslopes: Analysis of Observation Results at Three Sites with Different Geology and Rainfall Characteristics.

Miyata¹,

Onda²,

Gomi³

et al. 2009

J. Jpn. For. Soc.

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Infiltration and Soil Erosion as Influenced by Vegetation and Soil in Northern Utah

Cited by 66 publications

References 4 publications

Seasonal variability of infiltration rates under contrasting slope conditions in southeast Spain

Seasonal variability of infiltration rates under contrasting slope conditions in southeast Spain

Environmental and Anthropogenic Degradation of Vegetation in the Sahel from 1982 to 2006

Factors Affecting Generation of Hortonian Overland Flow in Forested Hillslopes: Analysis of Observation Results at Three Sites with Different Geology and Rainfall Characteristics.

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