scholarly journals Soil losses under simulated rainfall in semi-arid shrublands of the Ebro Valley, Spain

1993 ◽  
Vol 9 (4) ◽  
pp. 152-157 ◽  
Author(s):  
A. Navas
Keyword(s):  
Simulated Rainfall ◽  
Ebro Valley ◽  
Arid Shrublands ◽  
Semi Arid ◽  
Soil Losses

Vegetation and landscape connectivity control wildfire intervals in unmanaged semi-arid shrublands and woodlands in Australia

2010 ◽  
Vol 38 (1) ◽  
pp. 112-124 ◽  
Author(s):  
Alison J. O’Donnell ◽  
Matthias M. Boer ◽  
W. Lachlan McCaw ◽  
Pauline F. Grierson
Keyword(s):  
Landscape Connectivity ◽  
Arid Shrublands ◽  
Semi Arid

scholarly journals Climatic anomalies drive wildfire occurrence and extent in semi-arid shrublands and woodlands of southwest Australia

Ecosphere ◽  
2011 ◽  
Vol 2 (11) ◽  
pp. art127 ◽  
Author(s):  
A. J. O'Donnell ◽  
M. M. Boer ◽  
W. L. McCaw ◽  
P. F. Grierson
Keyword(s):  
Wildfire Occurrence ◽  
Arid Shrublands ◽  
Southwest Australia ◽  
Semi Arid

scholarly journals Assessment and mapping of water erosion by the integration of the Gavrilovic “EPM” model in the Inaouene watershed, Morocco

2021 ◽  
Vol 314 ◽  
pp. 03009
Author(s):  
Laaraj Marouane ◽  
Benaabidate Lahcen ◽  
Mesnage Valérie
Keyword(s):  
Agricultural Land ◽  
Water Erosion ◽  
Soil Protection ◽  
The World ◽  
Soil Sensitivity ◽  
Middle Atlas ◽  
Control Water ◽  
Semi Arid ◽  
Soil Losses ◽  
Anthropic Pressure

Water erosion is one of the main causes of soil degradation around the world. In M orocco, In M orocco, the watersheds have very significant soil wastes, related to various physical and anthropic factors. The Oued Inaouene watershed is concerned because of its location in the eastern part of the Saïss basin, between the Middle Atlas and the Pre-Rif, where water erosion is more accentuated. This basin covers a total area of 3597.13 Km2 and it is marked by a semi-arid climate with relatively abundant (989.68 mm), irregular rainfall and strong anthropic pressure. This will have an impact of overexploiting natural resources in general and soils in particular. The excessive use of agricultural land has led to their fragility and aggravation of their susceptibility to erosion. These conditions, both natural and anthropic, have induced a rather intense erosive dynamic, which can be visible in its various forms, including gullying and landslides. The erosive dynamics leads progressively and certainly to impoverish the soils of the watershed and the silting of the dam Idris 1st located downstream of the Oued Inaouene, hence the interest of this study. The use of the “EPM” model for the estimation of soil losses approaches the severity of the erosive phenomenon. The average soil loss due to water erosion according to the model used is estimated at 53.34 t/ha/year. The maximum losses are about 597.642 t/ha/yr per plot. Total annual losses for the watershed are approximately 211084195 t/yr. Furthermore, the analysis of these results allowed, with the help of GIS, to determine the factors that control water erosion and which are, in order of importance: rainfall, slope, and soil sensitivity Soil protection. If anti-erosion measures aren’t adopted in the threatened parts of the watershed, this will have serious consequences for the dam and water quality .

scholarly journals Shoot and root biomass production in semi-arid shrublands exposed to long-term experimental N input

2021 ◽  
Vol 754 ◽  
pp. 142204
Author(s):  
George L. Vourlitis ◽  
Jeff Jaureguy ◽  
Leticia Marin ◽  
Charlton Rodriguez
Keyword(s):  
Biomass Production ◽  
Root Biomass ◽  
Arid Shrublands ◽  
N Input ◽  
Semi Arid ◽  
Shoot And Root Biomass

scholarly journals Carbon and nitrogen storage in soil and litter of southern Californian semi-arid shrublands

2007 ◽  
Vol 70 (1) ◽  
pp. 164-173 ◽  
Author(s):  
G.L. Vourlitis ◽  
G. Zorba ◽  
S.C. Pasquini ◽  
R. Mustard
Keyword(s):  
Nitrogen Storage ◽  
Carbon And Nitrogen ◽  
Arid Shrublands ◽  
Semi Arid

scholarly journals Losses of water, soil, and nutrients during high-intensity simulated rainfall in two soil management systems different sources of fertilization

2020 ◽  
Vol 50 (10) ◽  
Author(s):  
Alexandra Minossi de Lemos ◽  
Elemar Antonino Cassol ◽  
Cláudia Alessandra Peixoto de Barros
Keyword(s):  
Cover Crops ◽  
High Intensity ◽  
Conventional Tillage ◽  
Soil Tillage ◽  
Soluble Form ◽  
Pig Slurry ◽  
Simulated Rainfall ◽  
Water Losses ◽  
High Runoff ◽  
Soil Losses

ABSTRACT: The goal of this study was to quantify the water, soil, and soluble nutrient losses during high-intensity rainfall simulated in two soil preparation systems with four sources of fertilization. Forty-five days after the corn seeding, a 120 mm h-1 intensity rainfall was simulated during 90 min in field plots with conventional tillage (CT) or no-tillage (NT). Each system had four repetitions with the fertilizer treatments, including without fertilization, mineral, urban waste compost (UWC), and pig slurry. P, K, Ca, and K concentrations were measured in soluble form, in addition to electrical conductivity, pH, water, and soil losses. As expected, the greatest soil losses occurred with CT; however, the greatest water losses occurred with NT. Among the fertilizers, UWC was more efficient because it had the highest infiltration rates. The concentrations of P, K, Ca, and Mg did not exhibit any interaction between fertilization and soil tillage treatments. K was the nutrient that presented the greatest losses (kg ha-1) at the end of the simulated rainfall because of the highest concentrations (mg L-1) added to high runoff coefficients of 45% for CT and 77% for NT. Thus, the evaluated system with cover crops and minimum soil tillage was not sufficient to control nutrient transfer in the soluble form during intense rainfall events.

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