Permanence of soil surface crusts on abandoned farmland in the Central Ebro Basin/Spain

Ries, Johannes B.; Hirt, Ulrike

doi:10.1016/j.catena.2007.06.001

Cited by 59 publications

(46 citation statements)

References 26 publications

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“…Soil hydraulic conductivity could be increased (Belnap et al, 2005;Li et al, 2011), decreased (Ries and Hirt, 2008;Li et al, 2010) or unchanged (Williams et al, 1999) by the development of biological crusts. In our study, a significant negative relationship between biological crust thickness and soil hydraulic conductivity (P<0.05) was detected (Table 6).…”

Section: Factors Impacting the Soil Infiltration Processmentioning

confidence: 99%

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

et al. 2016

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Abstract:The Loess Plateau of China has experienced extensive vegetation restoration in the past several decades, which leads to great changes in soil properties such as soil bulk, porosity, and organic matter with the vegetation restoration age. And these soil properties have great effect on the soil infiltration and soil hydraulic conductivity. However, the potential changes in soil hydraulic conductivity caused by vegetation restoration age have not been well understood. This study was conducted to investigate the changes in soil hydraulic conductivity under five grasslands with different vegetation restoration ages (3, 10, 18, 28 and 37 years) compared to a slope farmland, and further to identify the factors responsible for these changes on the Loess Plateau of China. At each site, accumulative infiltration amount and soil hydraulic conductivity were determined using a disc permeameter with a water supply pressure of -20 mm. Soil properties were measured for analyzing their potential factors influencing soil hydraulic conductivity. The results showed that the soil bulk had no significant changes over the initial 20 years of restoration (P>0.05); the total porosity, capillary porosity and field capacity decreased significantly in the grass land with 28 and 37 restoration ages compared to the slope farmland; accumulative infiltration amount and soil hydraulic conductivity were significantly enhanced after 18 years of vegetation restoration. However, accumulative infiltration amount and soil hydraulic conductivity fluctuated over the initial 10 years of restoration. The increase in soil hydraulic conductivity with vegetation restoration was closely related to the changes in soil texture and structure. Soil sand and clay contents were the most influential factors on soil hydraulic conductivity, followed by bulk density, soil porosity, root density and crust thickness. The Pearson correlation coefficients indicated that the soil hydraulic conductivity was affected by multiply factors. These results are helpful to understand the changes in hydrological and erosion processes response to vegetation succession on the Loess Plateau.

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Section: Factors Impacting the Soil Infiltration Processmentioning

confidence: 99%

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

et al. 2016

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“…Novara et al (2011) observed a redistribution of the OM by water erosion and degradation at the upper part of the hillslopes. Despite the variety of results and explanations provided by different authors, similar values of EC, pH, OM and SAS have been found in other works in gypseous soils ( Martí, 2000, 2003;Cantón et al, 2001;Badía et al, 2008Ries and Hirt, 2008;Lebron et al, 2009).…”

Section: Thermal Shockmentioning

confidence: 83%

Thermal shock and splash effects on burned gypseous soils from the Ebro Basin (NE Spain)

et al. 2014

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Abstract.Fire is a natural factor of landscape evolution in Mediterranean ecosystems. The middle Ebro Valley has extreme aridity, which results in a low plant cover and high soil erodibility, especially on gypseous substrates. The aim of this research is to analyze the effects of moderate heating on physical and chemical soil properties, mineralogical composition and susceptibility to splash erosion. Topsoil samples (15 cm depth) were taken in the Remolinos mountain slopes (Ebro Valley, NE Spain) from two soil types: Leptic Gypsisol (LP) in a convex slope and Haplic Gypsisol (GY) in a concave slope. To assess the heating effects on the mineralogy we burned the soils at 105 and 205 • C in an oven and to assess the splash effects we used a rainfall simulator under laboratory conditions using undisturbed topsoil subsamples (0-5 cm depth of Ah horizon). LP soil has lower soil organic matter (SOM) and soil aggregate stability (SAS) and higher gypsum content than GY soil. Gypsum and dolomite are the main minerals (> 80 %) in the LP soil, while gypsum, dolomite, calcite and quartz have similar proportions in GY soil. Clay minerals (kaolinite and illite) are scarce in both soils. Heating at 105 • C has no effect on soil mineralogy. However, heating to 205 • C transforms gypsum to bassanite, increases significantly the soil salinity (EC) in both soil units (LP and GY) and decreases pH only in GY soil. Despite differences in the content of organic matter and structural stability, both soils show no significant differences (P < 0.01) in the splash erosion rates. The size of pores is reduced by heating, as derived from variations in soil water retention capacity.

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“…In addition, the force of the rain in itself is a notable factor for compaction of the soil surface, as shown in the classic studies of Duley (1939) and Tackett and Pearson (1965). The soil mobilization carried out in these treatments intensifies, by mechanical action, the rupture of the aggregates which, with the impact of the raindrops, favors the formation of surface sealing (Abid and Lal, 2009), which represents an increase in density in the first millimeters of the soil surface (Ries and Hirt, 2008).…”

Section: Soil Cover and Physical Propertiesmentioning

confidence: 97%

Effect of Soil Tillage and Plant Residue on Surface Roughness of an Oxisol Under Simulated Rain

Panachuki

Bertol

Sobrinho

et al. 2015

Rev. Bras. Ciênc. Solo

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Surface roughness of the soil is formed by mechanical tillage and is also influenced by the kind and amount of plant residue, among other factors. Its persistence over time mainly depends on the fundamental characteristics of rain and soil type. However, few studies have been developed to evaluate these factors in Latossolos (Oxisols). In this study, we evaluated the effect of soil tillage and of amounts of plant residue on surface roughness of an Oxisol under simulated rain. Treatments consisted of the combination of the tillage systems of no-tillage (NT), conventional tillage (CT), and minimum tillage (MT) with rates of plant residue of 0, 1, and 2 Mg ha -1 of oats (Avena strigosa Schreb) and 0, 3, and 6 Mg ha -1 of maize (Zea mays L.). Seven simulated rains were applied on each experimental plot, with intensity of 60±2 mm h -1 and duration of 1 h at weekly intervals. The values of the random roughness index ranged from 2.94 to 17.71 mm in oats, and from 5.91 to 20.37 mm in maize, showing that CT and MT are effective in increasing soil surface roughness. It was seen that soil tillage operations carried out with the chisel plow and the leveling disk harrow are more effective in increasing soil roughness than those carried out with the heavy disk harrow and leveling disk harrow. The roughness index of the soil surface decreases exponentially with the increase in the rainfall volume applied under conditions of no tillage without soil cover, conventional tillage, and minimum tillage. The oat and maize crop residue present on the soil surface is effective in maintaining the roughness of the soil surface under no-tillage.

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Permanence of soil surface crusts on abandoned farmland in the Central Ebro Basin/Spain

Cited by 59 publications

References 26 publications

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

Thermal shock and splash effects on burned gypseous soils from the Ebro Basin (NE Spain)

Effect of Soil Tillage and Plant Residue on Surface Roughness of an Oxisol Under Simulated Rain

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