The erosional response of calcareous soils along a climatological gradient in Southeast Spain

Imeson, A.C.; Lavee, H.; Calvo, Andrea Luquin; Cerdà, Artemi

doi:10.1016/s0169-555x(97)00097-4

Cited by 56 publications

(29 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Early studies on water erosion in badland areas in southeastern Spain (Calvo-Cases et al 1991) found that the most important factors controlling erosional response related to cover and, that "the most effective cover appears to be a lichen cover". The data here for dry matter in runoff, expressed in g/L, showed an isolated absolute maximum of 3.8, but the mean was 0.62, which is quite low compared with other results in Mediterranean region from sites without biocrusts: 1.40-9.26 g L −1 for a simulated rainfall of 41 mm (Boix Fayos et al 1995); 11.30 g L −1 after 25 mm simulated rainfall (Imeson et al 1998); and 1.2-6.1 g L −1 after 30 mm simulated rainfall (Lasanta et al 2000). Following monitoring over three-years under natural rainfall, Cantón et al (2001) found an erosion rate of 21.4 g m −2 of surfaces covered by a lichen crust, whereas bare soil with a physical crust showed a rate of 308.1 g m −2 .…”

Section: The Inorganic and Organic Dry Matter In Runoffmentioning

confidence: 80%

Sediment content and chemical properties of water runoff on biocrusts in drylands

Lázaro

Mora

2014

Biologia

View full text Add to dashboard Cite

In drylands, water erosion can be a process with important economic and ecological implications, and is very dependent on the soil surface cover. There is broad agreement that biocrusts protect the soil from erosion in a wide range of circumstances. However, there is little information available on the effect of rain and biocrust types on this protective capacity and there is particularly very little knowledge on the erosive effects of runoff on biocrusts, which are expected to be larger in larger drainage areas, on the resistance of biocrusts to the combined effect of raindrops plus runoff flow and on the solute mobilisation by runoff in biocrusts. To answer these questions, we performed 96 rainfall-simulationin situ factorial experiments, including two biocrust types (cyanobacteria and lichens), three rain types (42, 63 and 77 mm h −1 , always 20 min rain), four plot lengths (1, 2, 3 and 4 m long) and four replicates. In each experiment, runoff volume was measured and a runoff sample was taken to determine (i) the amount of dry matter in runoff, (ii) the amount of organic matter among the dry matter, (iii) the electrical conductivity, pH and alkalinity in runoff water. The main findings were: biocrusts strongly protected soil against water erosion, even under the most erosive conditions, and the protection increased with the successional development. Biocrusts were very resistant to the impact of raindrops and also to runoff flow, although an emergent hypothesis arose: under the most erosive conditions, a threshold of erodibility could be reached at the cyanobacterial biocrust. The lichen crust also protected the soil against the removal of soil soluble substances. The development of a biocrust could change the chemical composition of the solutes in runoff.

show abstract

Section: The Inorganic and Organic Dry Matter In Runoffmentioning

confidence: 80%

Sediment content and chemical properties of water runoff on biocrusts in drylands

Lázaro

Mora

2014

Biologia

View full text Add to dashboard Cite

show abstract

“…Most of these studies were based on rainfall simulation experiments in the field Lavee, 1981, 1985;Lavee et al, 1991;Parsons et al, 1992;Bergkamp, 1998;Cerda, 1998c;Calvo-Cases et al, 2003;Arnau-Rosalén et al, 2008) or in the laboratory (Bryan, 2000); others were based on visual estimations (Bromley et al, 1997;Bergkamp, 1998). Furthermore, studies on runoff and sedimentation processes under natural rainfall conditions were conducted on medium and relatively large scales, i.e., part or all of the hillslope or catchment (e.g., Puigdefabregas et al, 1998Puigdefabregas et al, , 1999Bergkamp, 1998;Parsons et al, 1992); virtually all the studies based on small-scale runoff plots in the field used simulated rainfall and resembled one another in the means of application: they involved rainfall intensity of 50-55 mm h −1 during 45-60 min (Imeson et al, 1996;Cerdà, 1998b;Calvo-Cases et al, 2003;Arnau-Rosalén et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Livestock redistribute runoff and sediments in semi-arid rangeland areas

Sarah

Zonana

2015

Solid Earth

View full text Add to dashboard Cite

Abstract. Semi-arid areas where grazing is the main land use exhibit a "three-phase-mosaic" pattern of dominant surface patches: shrubs, trampling routes, and intershrub areas. This pattern differs from the "two-phase mosaic" seen in grazing-free semi-arid areas. The patches might create a positive feedback process in which enhanced infiltration beneath shrubs minimizes overland flow from under their canopies, thereby strengthening the sink-source mechanism by which overland flow generated between shrubs rapidly infiltrates into the soil beneath them, where it deposits soil particles, litter, nutrients and organic matter, thereby enhancing infiltration by changing the local microtopography, and improving soil properties. To analyze sink-source relationships among the patches in grazed areas in rangelands of the semi-arid northern Negev region of Israel, we constructed small runoff plots, 0.25-1.0 m 2 in area, of five types: shrub (Sarcopoterium spinosum), intershrub, route, route-shrub combination, and intershrub-shrub combination. The shrubs always occupied the downslope part of the plot. Overland flow and sediment deposits were measured in all plots during 2007/8 and 2008/9. The combined plots yielded much less overland flow and sediments than intershrub, routes and shrub ones, indicating that the shrubs absorbed almost all the yields of the upper part of their plots. The shrubs generated less runoff and sediments than routes and intershrubs; runoff flows from the routes and intershrubs were similar; sediment yield was highest in the intershrubs. Thus, runoff yield exhibited a twophase mosaic pattern, and sediment yield, i.e., soil erosion, a three-phase mosaic pattern.

show abstract

“…The studies on soil erosion in Karst region mainly focused on the characteristics [18], cause [19], process [20], and erosion risk assessment [21]. Studies on soil erosion of limestone hill slopes in semi-arid or arid areas have been carried out from the perspective of the hydrology based on statistical and parametric models [22][23][24]. New methods have been introduced in studies of soil erosion in Karst area, such as 137 Cs tracer [18] and fuzzy modeling [21].…”

Section: Introductionmentioning

confidence: 99%

Assessing spatial distribution of soil erosion in a karst region in southwestern China: A case study in Jinfo Mountains

Zhou

Pan

Zhou

2017

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Abstract. Soil erosion is serious with rocky desertification areas appearing in mountainous Karst regions in southwest China due to a conspicuous contradiction between man and the land resource. Land use and land cover play significant roles in regional soil erosion by water. This paper aimed to quantify regional soil erosion and to explore relationships between soil erosion and land use/land cover in order to locate high risk areas requiring soil conservation. Based on GIS, the Revised Universal Soil Loss Equation (RUSLE) was employed for erosion assessment for a typical Karst region, Jinfo Mountain region in southwest China, using local parameters. Spatial distribution of topsoil erosion was analyzed and relationships between soil erosion and land use/land cover changes (LULC) were statistically explored and discussed for regional erosion control. The overall values were under 25 t.ha.a, with the medium erosion areas accounting for 12.7% and the intense and very intense erosion areas totalled about 6%. The relations between soil erosion and LULC are complicated in this Karst mountainous region. Generally, the amount of ground cover, soil conservation measures, and cultivation disturbance have played critical roles in topsoil loss in the Jinfo mountain region. The reduced ground cover levels accompanying greater cultivation disturbance lead to higher erosion intensity in each landscape, and vice versa.

show abstract

The erosional response of calcareous soils along a climatological gradient in Southeast Spain

Cited by 56 publications

References 4 publications

Sediment content and chemical properties of water runoff on biocrusts in drylands

Sediment content and chemical properties of water runoff on biocrusts in drylands

Livestock redistribute runoff and sediments in semi-arid rangeland areas

Assessing spatial distribution of soil erosion in a karst region in southwestern China: A case study in Jinfo Mountains

Contact Info

Product

Resources

About