Soil moisture changes under shrub cover<i>(rosmarinus officinalis)</i>and cleared shrub as response to precipitation in a semiarid environment: Stemflow effects

Gonzalez‐Hidalgo, J. C.; Bellot, Juan

doi:10.1080/15324989709381471

Cited by 11 publications

(7 citation statements)

References 17 publications

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“…The temporal changes of runoff and erosion reported in our study are consistent with previous studies that vegetation and land-use changes are important factors in controling yields of runoff and erosion (see also Bryan and Campbell, 1986;Mitchell, 1990;Romero-Díaz et al, 1999). The protective effects of plant cover related to its capability in dissipating the kinetic energy of raindrops (Thornes, 1990), intercepting rainfall and transforming rainfall characteristics as well as affecting the infiltration capacity of the soil (Bellot and Escarré, 1998;Gonzalez-Hidalgo and Bellot, 1997), thus limiting runoff and eventual soil erosion (Woo et al, 1997).…”

Section: The Changes Of Conservation Efficiencysupporting

confidence: 80%

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

Huang

Chen

et al. 2006

Land Degrad Dev

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Large areas of traditional slope cropland were recently converted to other land-use types in the semiarid Loess Plateau of China. In this study, we selected four representative conversion options of slope croplands, i.e., pastureland rotated with cropland (cultivated with Medicago sativa L. and rotated with Triticum aestivum L.), shrubland and woodland (afforested with Hippophae rhamnoides L. and Pinus tabulaeformis), and grassland (native herbage Stipa breviflora) to study the effect of landuse conversion by comparing with traditional cropland. Compared with slope cropland, the relative effects of different conversion options on surface runoff and soil erosion were assessed over a 14-year measurement period. Observations showed that distinct features and consequences of vegetation succession were found among the conversion options. Plots of shrubland had the highest vegetation coverage with dense undergrowth; natural herbaceous and subshrub species gradually spread into plots of grassland resulting in higher vegetation cover. Neither bushes nor herbs colonized the plots of Pinus tabulaeformis, which resulted in a higher percentage of bare soil. Significant differences in runoff generation, sediment yield and conservation efficiencies among the selected conversion options were detected through an analyses of variance (ANOVA). Compared with cropland, total runoff and sediment decreased by 65 per cent and 95 per cent in shrubland, 41 per cent and 92Á5 per cent in grassland, 18 per cent and 77 per cent in woodland, and 12 per cent and 58 per cent in pastureland, respectively. The ranking of soil and water conservation efficiencies was shrubland > grassland > woodland > pastureland > cropland. Based on the effectiveness of soil and water conservation, shrubland and grassland are highly recommended as promising options for cropland conversion projects. However, pastureland and woodland are not suggested as potential options for slope-cropland conversion because of low soil and water conservation in the long term.

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Section: The Changes Of Conservation Efficiencysupporting

confidence: 80%

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

Huang

Chen

et al. 2006

Land Degrad Dev

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“…The present results suggest that the study of stemflow under simulated rainfall of fixed intensity (e.g. Gonzalez‐Hidalgo and Bellot, ; Trucchi and Andrenelli, ; Taucer et al ., ) will not yield a full understanding of how stemflow is produced in natural rainfall. Likewise, extreme and sustained rainfall simulation intensities (such as the exceptionally torrential 152 mm/h sustained for 45 minutes, used by Taucer et al ., ) may fail to illuminate processes that actually operate during natural rainfall.…”

Section: Discussionmentioning

confidence: 99%

Stemflow production and intrastorm rainfall intensity variation: an experimental analysis using laboratory rainfall simulation

Dunkerley

2014

Earth Surf Processes Landf

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Laboratory rainfall simulation experiments using a small artificial olive tree are used to show that the fraction of rain falling at a constant intensity that becomes stemflow rises from 9% at 2.5 mm/h to 36.1% at 35 mm/h. Natural rainfall events commonly exhibit wide fluctuations of intensity. Simulated rainfall events each having a mean intensity of 10 mm/h, but containing short intensity peaks of 20 to 100 mm/h at varying intra-event positions, were used to explore the effect of varying intensity profiles. Results demonstrate that changes in rainfall event profile are associated with wide variation in stemflow flux, stemflow volume and stemflow fraction. When applied to an initially dry plant, rainfall events with a late intensity peak yielded an average peak stemflow flux up to 188% larger than events of contrasting profile, such as early peak events. The increase was smaller, up to 141%, when rain was applied to plants that were already partially wet, but was again found in events with a late intensity peak. Moreover, such events yielded a peak stemflow flux up to approximately seven times larger than comparable events of uniform intensity. Likewise, changing event profile with no change in rainfall depth was associated with a maximum stemflow fraction that was 31% larger than theminimum stemflow fraction, and a maximum stemflow volume that was nearly 37% larger than the minimum stemflow volume. These results suggest that rainfall event profile exerts a significant effect on all of the studied stemflow parameters. It is hypothesized that this is a consequence of the way in which intensity profile affects the rate of wetting-up of trickle pathways on the plant, and variation in the time taken for these pathways to become fully connected. Event profile must therefore be considered along with plant architecture in seeking to understand stemflow.

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“…Moreover, plant architecture can funnel precipitation towards the soil through stemflow (Domingo et al, 1998). This funnel effect concentrates volume from the canopy-contributingarea (mean values in shrubs 1 -2 m 2 ) and distributes it around the trunk into a small area (0.3 -0.5 m 2 ) (Gonzalez-Hidalgo and Bellot, 1997). In our case, the u probes were placed a few centimetres (2 -4 cm) from the trunk, and this funnel effect might have influenced the measurements.…”

Section: Sti With Intermediate Infiltration Rates Of About 24 MM H 21mentioning

confidence: 99%

Temporal and spatial patterns of soil moisture in semiarid badlands of SE Spain

Cantón

Solé‐Benet

Domingo

2004

Journal of Hydrology

196

117

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Soil moisture changes under shrub cover(rosmarinus officinalis)and cleared shrub as response to precipitation in a semiarid environment: Stemflow effects

Cited by 11 publications

References 17 publications

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

Stemflow production and intrastorm rainfall intensity variation: an experimental analysis using laboratory rainfall simulation

Temporal and spatial patterns of soil moisture in semiarid badlands of SE Spain

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